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Anthraquinones-based photocatalysis: A comprehensive review
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作者 Cheng-Xin Chen Shan-Shan Yang +5 位作者 Ji-Wei Pang Lei He Ya-Ni Zang Lan Ding Nan-Qi Ren Jie Ding 《Environmental Science and Ecotechnology》 SCIE 2024年第6期52-74,共23页
In recent years,there has been significant interest in photocatalytic technologies utilizing semiconductors and photosensitizers responsive to solar light,owing to their potential for energy and environmental applicat... In recent years,there has been significant interest in photocatalytic technologies utilizing semiconductors and photosensitizers responsive to solar light,owing to their potential for energy and environmental applications.Current efforts are focused on enhancing existing photocatalysts and developing new ones tailored for environmental uses.Anthraquinones(AQs)serve as redox-active electron transfer mediators and photochemically active organic photosensitizers,effectively addressing common issues such as low light utilization and carrier separation efficiency found in conventional semiconductors.AQs offer advantages such as abundant raw materials,controlled preparation,excellent electron transfer capabilities,and photosensitivity,with applications spanning the energy,medical,and environmental sectors.Despite their utility,comprehensive reviews on AQs-based photocatalytic systems in environmental contexts are lacking.In this review,we thoroughly describe the photochemical properties of AQs and their potential applications in photocatalysis,particularly in addressing key environmental challenges like clean energy production,antibacterial action,and pollutant degradation.However,AQs face limitations in practical photocatalytic applications due to their low electrical conductivity and solubility-related secondary contamination.To mitigate these issues,the design and synthesis of graphene-immobilized AQs are highlighted as a solution to enhance practical photocatalytic applications.Additionally,future research directions are proposed to deepen the understanding of AQs'theoretical mechanisms and to provide practical applications for wastewater treatment.This review aims to facilitate mechanistic studies and practical applications of AQs-based photocatalytic technologies and to improve understanding of these technologies. 展开更多
关键词 anthraquinone PHOTOCATALYSIS Electron transfer Environmental application IMMOBILIZATION
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Inhibition of human cytochrome CYP1B1 by anthraquinone compounds,chrysophanol and physcion
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作者 JIA Liwei ZHOU Lei +3 位作者 WANG Zhenyue WANG Qianbo LIU Xiaoyan MENG Xin 《黑龙江大学自然科学学报》 CAS 2024年第4期427-433,共7页
The in vitro inhibitory effects of chrysophanol and physcion on CYP1B1 were explored,utilizing ethoxyresorufin as the substrate.The inhibition kinetics of CYP1B1 by these compounds were assessed with escalating doses ... The in vitro inhibitory effects of chrysophanol and physcion on CYP1B1 were explored,utilizing ethoxyresorufin as the substrate.The inhibition kinetics of CYP1B1 by these compounds were assessed with escalating doses of ethoxyresorufin.Both chrysophanol(IC_(50)(0.47±0.01)μmol·L^(-1))and physcion(IC_(50)(0.35±0.02)μmol·L^(-1))significantly reduce the catalytic efficiency of CYP1B1.The V_(max)and K_(m)values are determined to be(51.9912±10.0547)pmol·μg^(-1)(protein)·min^(-1) and(0.9663±0.2987)nmol·L^(-1)for chrysophanol,and(45.4227±1.9978)pmol·μg^(-1)(protein)·min^(-1) and(0.4367±0.0386)nmol·L^(-1)for physcion,respectively.Kinetic analysis reveals that chrysophanol and physcion exert mixed inhibitory effects on CYP1B1.This mixed inhibition is primarily characterized by the compounds’ability to competitively bind to the active sites of CYP1B1,as well as potentially through non-competitive mechanisms,thereby reducing the enzyme’s catalytic efficiency.Molecular docking studies are conducted to elucidate the interaction between anthraquinone derivatives and CYP1B1,indicating that these compounds may inhibit CYP1B1 activity by binding to their active sites.The demonstrated capacity of chrysophanol and physcion to inhibit CYP1B1 enzymatic function unveils a potential anticancer mechanism,advancing our comprehension of how the structure of anthraquinone derivatives correlates with CYP1B1 inhibition and paving the way for developing innovative cancer treatments. 展开更多
关键词 CYP1B1 CHRYSOPHANOL PHYSCION anthraquinone derivative enzyme inhibitor
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Three Anthraquinones Isolated from Aster tataricus L.f 被引量:5
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作者 卢艳花 王峥涛 +1 位作者 徐珞珊 吴子斌 《Journal of Chinese Pharmaceutical Sciences》 CAS 2003年第2期112-113,共2页
The roots and rhizomes of Aster tataricus L. f (Zi-wan) is a traditionalChinese medicine, which has been used for relieving cough and resolving phlegm. Previousinvestigation of the species resulted in the isolation an... The roots and rhizomes of Aster tataricus L. f (Zi-wan) is a traditionalChinese medicine, which has been used for relieving cough and resolving phlegm. Previousinvestigation of the species resulted in the isolation and identification of triterpenes,triterpenoid saponins, cyclic pentapeptides, and oligopeptides. We have also reported thepolyphenols and a dipeptide isolated from the species. In this paper, the isolation and structureelucidation of three anthraquinones, chrysophanol (1), physciori (2), and emodin (3), are described.Chrysophanol and physcion were isolated from family Composi-tae for the first time. 展开更多
关键词 Aster tataricus anthraquinoneS
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The Action of Aloe Anthraquinones in Protecting the Growth of Soybean from Ultraviolet Radiation Stress 被引量:1
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作者 贵梦园 张中田 +3 位作者 张佩佩 韩琼 王庭杰 李景原 《Agricultural Science & Technology》 CAS 2014年第12期2078-2080,共3页
In order to investigate the protective effect of aloe anthraquinones on growth and development of soybean against ultraviolet B radiation stress from the morphological structure and physio-chemical indices. The result... In order to investigate the protective effect of aloe anthraquinones on growth and development of soybean against ultraviolet B radiation stress from the morphological structure and physio-chemical indices. The results showed that, stressed by the enhanced ultraviolet b radiation, the soybean gave a dwarfed plant, shrunken leaf area and decreased photosynthetic pigment, while an ascended MDA content. Spraying aloe anthraquinones effectively relieved the reductions of chloro- phyll content and biomass and decreased the production of MDA under the radia- tion of UV-B. Moreover, under the UV-B radiation, waxy substances on epidermal cells increased remarkably and the stomas showed obvious subsidence, while spraying aloe anthraquinones could maintain the structure and shape of cells similar to that under natural light, and the stomas subsidence as well. 展开更多
关键词 Ultraviolet B radiation stress ALOE anthraquinoneS SOYBEAN Protection
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Organ specific differences in alteration of aquaporin expression in rats treated with sennoside A,senna anthraquinones and rhubarb anthraquinones 被引量:2
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作者 WANG Zhao-yang CHENG Ying QIAO Bo-ling 《中国药理学与毒理学杂志》 CAS 北大核心 2021年第10期772-773,共2页
OBJECTIVE Senna and rhubarb are classified as stimulative laxatives,and known to have similar effective constituents,the anthraquinones.Being protected by theβ-glucoside bond,the anthraquinones can reach the intestin... OBJECTIVE Senna and rhubarb are classified as stimulative laxatives,and known to have similar effective constituents,the anthraquinones.Being protected by theβ-glucoside bond,the anthraquinones can reach the intestines where they are degraded into complex metabolites by enzymes secreted from the intestinal microbiome.It is these complex metabolites that produce the laxative effects.Then the similarities and differences of action between the anthraquinones require further elucidation.METHODS Here,we studied metabolites of senna anthraquinones(SAQ),rhubarb anthraquinones(RAQ)and their chemical marker,sennoside A(SA),in a rat diarrhea model.In the in vitro biotransformation experiments,SAQ,RAQ and SA were incubated with rat fecal flora solution and the metabolites produced were analyzed using HPLC.In the in vivo studies,the same compounds were investigated for purgation induction,with measurement of histopathology and multiple aquaporins(Aqps)gene expression in six organs.RESULTS SAQ and RAQ had similar principal constituents but could be degraded into different metabolites.A similar profile of Aqps down-regulation for all compounds was seen in the colon,suggesting a similar mechanism of action for purgation.However,in the kidneys and livers of the diarrhea-rats,down-regulation of Aqps was found in the RAQ-rats whereas up-regulation of Aqps was seen in the SAQ-rats.Furthermore,the RAQ-rats showed lower aquaporin 2(Aqp2)protein expression in the kidneys,whilst the SA-rats and SAQ-rats had higher Aqp2 protein expression in the kidneys.This may have implications for side effects of SAQ or RAQ in patients with chronic kidney or liver diseases.CONCLUSION SAQ and RAQ showed similar laxative actions with a similar mechanism,they could display different actions in rat kidneys and livers.We suggest that the clinical usage of senna or rhubarb products should be clarified for patients having chronic kidney or liver diseases. 展开更多
关键词 senna anthraquinones rhubarb anthraquinones sennoside A LAXATIVE AQUAPORINS
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Determination of Total Anthraquinone and Free Anthraquinone in Different Processed Products of Rhubarb
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作者 Bing WU Jinhua LIU +2 位作者 Meiyuan LU Chao ZENG Tingting MO 《Medicinal Plant》 CAS 2021年第2期17-20,共4页
[Objectives]The content of total anthraquinone and 5 free anthraquinones in different processed products of rhubarb were determined.[Methods]Using emodin as the reference,the concentration of 1%magnesium acetate metha... [Objectives]The content of total anthraquinone and 5 free anthraquinones in different processed products of rhubarb were determined.[Methods]Using emodin as the reference,the concentration of 1%magnesium acetate methanol solution was used for color development,and the absorbance was measured at 516 nm wavelength;the mobile phase was methanol-0.1%phosphoric acid(76∶24)aqueous solution,the detection wavelength was set at 256 nm,the flow rate was 1.0 mL/min,the column temperature was 30℃,and the sample size was 10μL.[Results]The content of total anthraquinones in rhubarb was determined by UV spectrophotometry.The linear range was 0.98-23.52μg/mL,R2=0.9993,the average recoveries were 100.12%,99.66%and 99.15%,with RSDs of 1.58%,0.94%and 1.41%,respectively.The linear ranges of emodin,emodin,emodin,chrysophanol and emodin methyl ether were 0.0207-0.414(R2=0.9999),0.1721-3.442(R2=0.9996),0.0203-0.406(R2=0.9999),0.148-2.96(R2=0.9998)and 0.164-3.28(R2=0.9993),respectively.[Conclusions]The contents of total anthraquinones and free anthraquinones in different processed products of rhubarb were determined by UV spectrophotometry and HPLC.The method can be used for quality control of rhubarb and its different processed products. 展开更多
关键词 Rheum L. Total anthraquinone Free anthraquinones High-performance liquid chromatography(HPLC) Ultraviolet-visible spectrophotometry(UV-Vis)
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Determination of anthraquinone prodrug and its hydrolytically active compounds using RP-HPLC
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作者 段艳冰 余佳 +1 位作者 刘海峰 吉民 《Journal of Southeast University(English Edition)》 EI CAS 2009年第1期128-131,共4页
In order to study the hydrolytic characterization of an anti-inflammatory prodrug ( RI-1 ) in vitro, an effective, accurate and reliable method for the simultaneous determination of the prodrug and its two hydrolyti... In order to study the hydrolytic characterization of an anti-inflammatory prodrug ( RI-1 ) in vitro, an effective, accurate and reliable method for the simultaneous determination of the prodrug and its two hydrolytic active compounds is developed using reverse phase high-performance liquid chromatography (RP-HPLC). The chromatographic separation is performed on an ODS-2 C18 column (250 mm × 4. 6 mm, 5.0 μm particle size) with a simple elution program. The mobile phase is V( methanol) : V(0. 1% phosphoric acid solution) =90:10 (adjust pH to 2. 3). A wavelength of 225 nm and a mobile phase flow rate of 1.0 mL/min are utilized for the quantitative analysis. Excellent linear behaviors over the investigated concentration ranges are observed with values of R2 higher than 0. 999 for all the analytes. The validated method is successfully applied to the simultaneous determination of the prodrug and its active components can be used to detect hydrolytic characterization in vitro. 展开更多
关键词 high-performance liquid chromatography (HPLC) quantitative analysis anthraquinone prodrug active components
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Three New Anthraquinones from Polygonum cillinerve 被引量:10
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作者 Huan Yang QI Chao Feng ZHANG +2 位作者 Mian ZHANG Jian Qun LIU Zheng Tao WANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第8期1050-1052,共3页
Three new anthraquinones, emodin-8-β-D-(2"-O-coumarate)glucoside 1, emodin-8-β-D-(6'-O-acetyl)glucoside 2 and physicon-8-β-D-(6'-O-acetyl)glucoside 3, were isolated from the roots of Polygonum cillinerve a... Three new anthraquinones, emodin-8-β-D-(2"-O-coumarate)glucoside 1, emodin-8-β-D-(6'-O-acetyl)glucoside 2 and physicon-8-β-D-(6'-O-acetyl)glucoside 3, were isolated from the roots of Polygonum cillinerve and their structures were established by spectroscopic methods. The biological activity indicated that compound 1 had the scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals (the IC50 = 8.5 μmol/L), and compound 1-3 showed no activities against HL-60 and BCJC-823 cells by MTT method in vitro. 展开更多
关键词 Polygonum cillinerve anthraquinone antioxidant activity cytotoxic activity.
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Treatment of anthraquinone dye wastewater by hydrolytic acidification-aerobic process 被引量:5
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作者 YANGJian WUMin LiDan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第6期991-993,共3页
Experiment on microbial degradation with two kinds of biological process, hydrolytic acidification-aerobic process and aerobic process was conducted to treat the anthraquinone dye wastewater with COD Cr concentration ... Experiment on microbial degradation with two kinds of biological process, hydrolytic acidification-aerobic process and aerobic process was conducted to treat the anthraquinone dye wastewater with COD Cr concentration of 400 mg/L and chroma 800. The experimental result demonstrated that the hydrolytic-aerobic process could raise the biodegradability of anthraquinone dye wastewater effectively. The effluent COD Cr can reach 120170 mg/L and chroma 150 which is superior to that from simple aerobic process. 展开更多
关键词 anthraquinone dye wastewater HYDROLYSIS AEROBIC biological treatment
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A new anthraquinone glycoside from seeds of Cassia obtusifolia 被引量:8
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作者 Li Ying Tang Zhu Ju Wang Mei Hong Fu Yan He Hong Wei Wu Lu Qi Huang 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第9期1083-1085,共3页
A new anthraquinone glycoside 1, along with a known anthraquinone glycoside aurantio-obmsin-6-O-β-D-glucopyranoside 2, were isolated from the seeds of Cassia obtusifolia. On the basis of spectral and chemical evidenc... A new anthraquinone glycoside 1, along with a known anthraquinone glycoside aurantio-obmsin-6-O-β-D-glucopyranoside 2, were isolated from the seeds of Cassia obtusifolia. On the basis of spectral and chemical evidences, the structure of 1 was established as 1-demethylaurantio-obtusin-2-O-β-D-glucopyranoside. Moreover, the 13C NMR of 2 was assigned totally and correctly for the first time based on the two-dimensional NMR. 展开更多
关键词 ~assia obtusifolia anthraquinone glycoside 1-Demethylaurantio-obtusin-2-O-β-D-glucopyranoside
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New anthraquinone derivatives from the roots of Berchemia floribunda 被引量:5
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作者 Xin Wei Jian Shuang Jiang Zi Ming Feng Pei Cheng Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第4期412-414,共3页
A new naphthoquinone-anthraquinone dimer named floribundiquinone E (1) and a new anthraquinone 2-acetylphyscion (2) were isolated from the roots of Berchemia floribunda Brongn. Their structures were elucidated on ... A new naphthoquinone-anthraquinone dimer named floribundiquinone E (1) and a new anthraquinone 2-acetylphyscion (2) were isolated from the roots of Berchemia floribunda Brongn. Their structures were elucidated on the basis of spectroscopic methods. 展开更多
关键词 Berchemia floribunda anthraquinone Floribundiquinone E 2-Acetylphyscion
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Improving extraction yield of humic substances from lignite with anthraquinone in alkaline solution 被引量:3
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作者 姜涛 韩桂洪 +4 位作者 张元波 黄艳芳 李光辉 郭宇峰 杨永斌 《Journal of Central South University》 SCIE EI CAS 2011年第1期68-72,共5页
Based on the characteristics of the lignite sample, effects of assistant anthraquinone (AQ) on extraction yield of humic substances (HS) and the action mechanisms of AQ in alkaline condition were studied by Fouvie... Based on the characteristics of the lignite sample, effects of assistant anthraquinone (AQ) on extraction yield of humic substances (HS) and the action mechanisms of AQ in alkaline condition were studied by Fouvier transform infrared (FT-IR) spectroscopy. The results indicate that assistant AQ can not only increase the extraction yield of HS but also reduce the alkali dosage (NaOH) as well as the extraction temperature and extraction time. Under the optimal conditions of alkali dosage of 9%, AQ dosage of 0.75%, extraction temperature of 80 ℃, extraction time of 30 min, stirring speed of 600 r/min and solid-to-liquid ratio of 1:3, the extraction yield of HS reaches 80.08%, which is increased by more than 20% compared with the conventional extraction. FT-IR spectra show that AQ is able to prevent dissolved HS from being destroyed into undissolved substance by alkali and 1-IS obtained in the presence of AQ possesses more groups of COOR and --COOH than that obtained without AQ. 展开更多
关键词 humic substances EXTRACTION LIGNITE FTIR anthraquinone
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Electrooxidative Degradation of an Anthraquinone Dye with in-situ Electrogenerated Active Chlorine in a Divided Flow Cell 被引量:3
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作者 杨蕴哲 杨卫身 +1 位作者 杨凤林 张兴文 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第5期628-633,共6页
The purpose of this paper was to investigate the possibility of treating C. I. Reactive Blue 19 wastewater by electrochemical oxidation via electrogenerated active chlorine, using metallic oxide coatings (dimensional... The purpose of this paper was to investigate the possibility of treating C. I. Reactive Blue 19 wastewater by electrochemical oxidation via electrogenerated active chlorine, using metallic oxide coatings (dimensional stable anode, DSA) as anode. The electrolysis for the simulated wastewater was conducted at a constant current. Absorbances at 592 nm and 255 nm were measured to follow the decolorization of the dye and the degradatin of its aromatic ring. After 4 h of electrolysis under the experimental conditions: current density of 15 A·m^-2, 0.2 mol·L^-1 NaCl, 0.1 mol·L^-1 Na2SO4, 0.1 mmol·L^-1 dye, initial pH=6.4 and T=30℃, 100% decolorization of the dye and about 45% degradation of its aromatic ring were achieved, while no obvious change of total organic carbon was observed. The experimental results suggest that the decolorization of the dye and degradation of its aromatic ring were directly affected by current density, temperature, concentrations of the dye and sodium chloride, while slightly affected by initial pH and sodium sulfate concentration; the decolorization of the dye and degradation of its aromatic ring followed pseudo-first-order kinetics; and indirect electrooxidation, using electrogenerated active chlorine, predominated in the electrochemical oxidation. 展开更多
关键词 electrochemical oxidation anthraquinone dye electrogenerated active chlorine galvanostatic model flow cell
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Simultaneous determination of flavonoids and anthraquinones in chrysanthemum by capillary electrophoresis with amperometry detection 被引量:3
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作者 Yin Yan Zhang Zi Cheng Li Jin Kun Zhu Zhi Yong Yang Qing Jiang Wang Pin Gang He Yu Zhi Fang 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第10期1231-1234,共4页
A high-performance capillary electrophoresis with amperometry detection method (CE-AD) has been developed for the analysis of flavonoids and anthraquinones (emodin, kaempferol, apigenin, luteolin and rhein) in chr... A high-performance capillary electrophoresis with amperometry detection method (CE-AD) has been developed for the analysis of flavonoids and anthraquinones (emodin, kaempferol, apigenin, luteolin and rhein) in chrysanthemum. Under optimum conditions, these five analytes were base-line separated within 17 min using a borate-phosphate running buffer (1.5 ×10^-2 mol/L borate-3× 10^-2 mol/L phosphate running buffer, pH 9.0) at a working potential of +0.90 V (vs. SCE) and a separation voltage of 19 kV. The linear relationship between concentration and current response was obtained with detection limits (S/N = 3) ranging from 1.0 × 10^-7 to 2.1 × 10^-7 g/mL for all analytes. This proposed method was successfully used in the analysis of four kinds of chrysanthemum with relatively simple extraction procedures, the assay results were satisfactory. 展开更多
关键词 Capillary electrophoresis Amperometry detection Chrysanthemu FLAVONOIDS anthraquinoneS
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Decolorization of Anthraquinone dye by Rhodopseudomonas XL-1 被引量:6
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作者 董晓丽 Zhou Jiti +1 位作者 Wang Jing Lu Hong 《High Technology Letters》 EI CAS 2002年第2期11-14,共4页
Rhodopseudomonas XL 1 gained from textile wastewater can effectively decolorize anthraquinone dye. Under anaerobic condition, 93 percent of the anthraquinone dye is decolorized , which is higher than that under aerobi... Rhodopseudomonas XL 1 gained from textile wastewater can effectively decolorize anthraquinone dye. Under anaerobic condition, 93 percent of the anthraquinone dye is decolorized , which is higher than that under aerobic condition. The optimum pH is 6~9 and the optimum temperature is 20~40℃ for the anthraquinone dye decolorization by XL 1 . XL 1 can not decolorize the anthraquinone dye when it is the sole carbon source. Microbial cometabolism and decolorization of the dye take place in the presence of some other carbon source(0.2~0.4g/100ml)called cometabolic substrate. The cometabolic substrate can be peptone, glucose, sodium acetate, beef extract, amylum, etc. The change of molecular structure of the dye before and after decolorized by XL 1 is studied by UV Vis absorption spectrum. The results indicate that its molecular structure is changed evidently. 展开更多
关键词 anthraquinone dye DECOLORIZATION BIODEGRADATION
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Anti-inflammatory Effects and Mechanisms of Rhein, an Anthraquinone Compound, and Its Applications in Treating Arthritis: A Review 被引量:3
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作者 Hongjuan Wang Dezhi Yang +3 位作者 Li Li Shiying Yang Guanhua Du Yang Lu 《Natural Products and Bioprospecting》 CAS 2020年第6期445-452,共8页
Inflammation is a defensive response of living tissues to damaging agents,which exists in two forms,acute inflammation and chronic inflammation,and chronic inflammation is closely related to arthritis.Currently,the co... Inflammation is a defensive response of living tissues to damaging agents,which exists in two forms,acute inflammation and chronic inflammation,and chronic inflammation is closely related to arthritis.Currently,the commonly prescribed anti-inflammatory medications are greatly limited by high incidence of gastrointestinal erosions in the clinical applications.Rhein,a bioactive constituent of anthraquinone,exhibits excellent anti-inflammatory activities and therapeutic effects on arthritis with less gastrointestinal damages.Although there are numbers of studies on anti-inflammatory effects and mechanisms of rhein in the last few decades,to the best of our knowledge,only a few review articles pay attention to the interactive relationships of rhein on multiple inflammatory signaling pathways and cellular processes from a comprehensive perspective.Herein,we summarized anti-inflammatory effects and mechanisms of rhein and its practical applications in the treatment of arthritis,thereby providing a reference for its basic researches and clinical applications. 展开更多
关键词 RHEIN anthraquinone ANTI-INFLAMMATORY ARTHRITIS
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Effects of Cerium Dopant on Ni-B Amorphous Alloy Catalysts Used in 2-Ethylanthraquinone Hydrogenation 被引量:2
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作者 侯永江 王亚权 +3 位作者 王莅 米镇涛 吴巍 闵恩泽 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第5期628-631,共4页
A series of Ce-doped Ni-B amorphous alloy catalysts were prepared by a KBH_4 reduction method, characterized by ICP, BET, XRD, H_2-chemisorption, H_2-TPD, etc., and tested in the hydrogenation of 2-ethylanthraquinone.... A series of Ce-doped Ni-B amorphous alloy catalysts were prepared by a KBH_4 reduction method, characterized by ICP, BET, XRD, H_2-chemisorption, H_2-TPD, etc., and tested in the hydrogenation of 2-ethylanthraquinone. The results of characterization show that with the addition of Ce the amount of H_2-chemisorption and H_2-TPD areas first increases markedly and then decreases with the maximum appears at the atomic ratio of Ce to Ni of 0.036. The hydrogenation activity also shows the same trend. The effects of Ce are attributed to its dispersion of Ni particles, resulting in the formation of more surface Ni centers. However, much higher Ce contents may result in the decrease of the surface Ni contents. After heat treatment at higher temperatures, the amorphous structure of Ni-B is destroyed. 展开更多
关键词 catalytic chemistry Ni-B amorphous alloy CERIUM catalysts anthraquinone HYDROGENATION hydrogen (peroxide ) rare earths
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Antitumor and Antioxidant Activities of the New Anthraquinone Derivatives: Synthesis, DPPH, ABTS, Biological and DFT Investigations 被引量:2
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作者 SYAMAK Shahab MASOOME Sheikhi +2 位作者 RADWAN Alnajjar LIUDMILA Filippovich EVGENJ Dikusar 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第10期1673-1690,1610,共19页
In the given research,for the first time the molecular structures of four new anthraquinone derivatives have been predicted and investigated by using Density Functional Theory(DFT/M052X/MidiX)in water.After quantum-ch... In the given research,for the first time the molecular structures of four new anthraquinone derivatives have been predicted and investigated by using Density Functional Theory(DFT/M052X/MidiX)in water.After quantum-chemical calculations the title compounds have been synthesized.The M052X/MidiX method has been employed to obtain Bond Dissociation Enthalpy(BDE),Mulliken Charges,NBO analysis,Ionization Potential(IP),Electron Affinities(EA),HOMO and LUMO energies,Hardness(η),Softness(S),Electronegativity(μ),Electrophilic Index(ω),Electron Donating Power(ω^-),Electron Accepting Power(ω^+)and Energy Gap(Eg) in order to infer scavenging activity of the four new synthesized anthraquinone derivatives(Sm-3,Sm-4,Sm-7,Sm-10).Comparative analysis of BDE of Sm-3,4,7,10 indicates the weal antioxidant potential of these structures.These molecules have high antioxidant potential due to the planarity and formation of intramolecular hydrogen bonds.Experimental investigations establish high antioxidant and antitumor activities of the synthesized anthraquinone derivatives. 展开更多
关键词 anthraquinone ANTIOXIDANT ANTITUMOR RADICAL
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Effects of porous oxide layer on performance of Pd-based monolithic catalysts for 2-ethylanthraquinone hydrogenation 被引量:7
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作者 Xin Shi Enxian Yuan +1 位作者 Guozhu Liu Li Wang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2016年第11期1570-1576,共7页
Pd/oxide/cordierite monolithic catalysts(oxide = Al_2O_3, SiO_2 and SiO_2\\Al_2O_3) were prepared by the impregnation method. The results of ICP, XRD, SEM–EDX, XPS and N_2 adsorption–desorption measurements revealed... Pd/oxide/cordierite monolithic catalysts(oxide = Al_2O_3, SiO_2 and SiO_2\\Al_2O_3) were prepared by the impregnation method. The results of ICP, XRD, SEM–EDX, XPS and N_2 adsorption–desorption measurements revealed that the Pd penetration depth increased with increasing the thickness of oxide layer, and the catalysts with Al_2O_3 layers had the larger pore size than those with SiO_2 and SiO_2\\Al_2O_3 layers. Catalytic hydrogenation of 2-ethylanthraquinone(eA Q), a key step of the H_2O_2 production by the anthraquinone process, over the various monolithic catalysts(60 °C, atmosphere pressure) showed that the monolithic catalyst with the moderate thickness of Al_2O_3 layer(about 6 μm) exhibited the highest conversion of e AQ(99.1%) and hydrogenation efficiency(10.0 g·L^(-1)). This could be ascribed to the suitable Pd penetration depth and the larger pore size, which provides a balance between the distribution of Pd and accessibility of active sites by the reactants. 展开更多
关键词 Monolith Catalyst Hydrogenation anthraquinone Hydrogen peroxide Pd
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Anthraquinone derivative as high-performance anode material for sodium-ion batteries using ether-based electrolytes 被引量:2
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作者 Linqin Mu Yaxiang Lu +5 位作者 Xiaoyan Wu Yuejun Ding Yong-Sheng Hu Hong Li Liquan Chen Xuejie Huang 《Green Energy & Environment》 SCIE 2018年第1期63-70,共8页
Organic materials, especially the carbonyl compounds, are promising anode materials for room temperature sodium-ion batteries owing to their high reversible capacity, structural diversity as well as eco-friendly synth... Organic materials, especially the carbonyl compounds, are promising anode materials for room temperature sodium-ion batteries owing to their high reversible capacity, structural diversity as well as eco-friendly synthesis from bio-mass. Herein, we report a novel anthraquinone derivative, C_(14)H_6 O_4 Na_2 composited with carbon nanotube(C_(14)H_6 O_4 Na_2-CNT), used as an anode material for sodium-ion batteries in etherbased electrolyte. The C_(14)H_6 O_4 Na_2-CNT electrode delivers a reversible capacity of 173 mAh g^(-1) and an ultra-high initial Coulombic efficiency of 98% at the rate of 0.1 C. The capacity retention is 82% after 50 cycles at 0.2 C and a good rate capability is displayed at 2 C.Furthermore, the average Na insertion voltage of 1.27 V vs. Na^+/Na makes it a unique and safety battery material, which would avoid Na plating and formation of solid electrolyte interface. Our contribution provides new insights for designing developed organic anode materials with high initial Coulombic efficiency and improved safety capability for sodium-ion batteries. 展开更多
关键词 anthraquinone C14H6O4Na2-CNT Anode material Ether-based electrolyte Sodium-ion batteries
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