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介孔SO_4^(2-)/TiO_2粉体的制备及光催化性能的研究 被引量:3
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作者 唐守强 何菁萍 《硅酸盐通报》 CAS CSCD 北大核心 2011年第6期1404-1409,共6页
以廉价的Ti(SO4)2为钛源,采用低温水-溶剂热法一步制得吸附SO24-的介孔偏钛酸,焙烧后得到介孔SO24-/TiO2亚微米粉体,研究了反应物浓度、反应温度、溶剂和表面活性剂对样品催化性能的影响,并采用XRD、SEM、FT-IR、N2吸附-脱附和Hammett... 以廉价的Ti(SO4)2为钛源,采用低温水-溶剂热法一步制得吸附SO24-的介孔偏钛酸,焙烧后得到介孔SO24-/TiO2亚微米粉体,研究了反应物浓度、反应温度、溶剂和表面活性剂对样品催化性能的影响,并采用XRD、SEM、FT-IR、N2吸附-脱附和Hammett指示剂法对催化剂进行表征,考察了其光催化性能。结果表明,最佳制备条件为:Ti(SO4)2浓度0.85 mol/L、十二烷基苯磺酸钠(SDBS)浓度0.004 mol/L、反应温度130℃、反应时间20 h、乙醇水混合液为溶剂;所得样品比表面积(BET)为103.67 m2/g、平均孔径6 nm、孔容积为0.204 cm3/g,最高酸强度H0=-12.14,180 min内对亚甲基蓝(MB)降解率达94%。 展开更多
关键词 Ti(SO4)2 水-溶剂热 表征
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Syntheses, Structures and Magnetic Properties of Two Co(II) Coordination Polymers with 2,5-Pyridine Dicarboxylic Acid 被引量:2
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作者 XUYing YUANDa-Qiang LINZhen-Zhong WUBen-Lai LUOJun-Hua HONGMao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第11期1230-1237,共8页
The hydro(solvo)thermal reactions of cobalt powder or its chloride with 2,5- pyridine dicarboxylic acid (H2PYDC) yielded two new complexes: [Co(II)2(PYDC)2(H2O)2- (H2O)4]n 1 and {Co(II)[NH2(CH3)2]2(PYDC)2}n 2. It is o... The hydro(solvo)thermal reactions of cobalt powder or its chloride with 2,5- pyridine dicarboxylic acid (H2PYDC) yielded two new complexes: [Co(II)2(PYDC)2(H2O)2- (H2O)4]n 1 and {Co(II)[NH2(CH3)2]2(PYDC)2}n 2. It is observed that the reactive solvents result in different connectivity modes of ligand and diverse dimensional extension of crystal structures. The correlation between structure and magnetic property will be discussed in this paper. Crystal data for 1: space group P1, a = 7.0419(17), b = 8.937(2), c = 9.6182(19) ?, α = 91.532(4), β = 99.869(10), γ = 107.889(11)o, V = 565.5(2) ?3, Z = 1, Dc = 1.845 g/cm3, μ = 1.56 mm-1, F(000) = 322 , R = 0.0505 and wR = 0.1580; and those for 2: space group C2/c, a = 14.9075(6), b = 8.2523(3), c = 16.9643(2) ?, β = 100.982(2)o, V = 2048.75(11) ?3, Z = 4, Dc = 1.560 g/cm3, μ = 0.892 mm-1, F(000) = 996, R = 0.0443 and wR = 0.1134. 展开更多
关键词 HYDROTHERMAL SOLVOTHERMAL cobalt MAGNETIC 2 5-pyridine dicarboxylic acid
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Adsorption of dimethyl trisulfide from aqueous solution on a low-cost adsorbent:thermally activated pinecone 被引量:1
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作者 商景阁 何伟 范成新 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2015年第1期169-175,共7页
Thermally activated pinecone(TAP) was used for the adsorption of dimethyl trisulfide(DMTS)from aqueous solutions,which was proved to be the main odorous in algae-caused black bloom.The effects of adsorbent dosage,adso... Thermally activated pinecone(TAP) was used for the adsorption of dimethyl trisulfide(DMTS)from aqueous solutions,which was proved to be the main odorous in algae-caused black bloom.The effects of adsorbent dosage,adsorbate concentration and contact time on DMTS biosorption were studied.The TAP produced at 600℃ exhibited a relatively high surface area(519.69 m^2/g) and excellent adsorption capacity.The results show that the adsorption of DMTS was initially fast and that the equilibrium time was6 h.Higher initial DMTS concentrations led to lower removal percentages but higher adsorption capacity.The removal percentage of DMTS increased and the adsorption capacity of TAP decreased with an increase in adsorbent dosage.The adsorption process conforms well to a pseudo-second-order kinetics model.The adsorption of DMTS is more appropriately described by the Freundlich isotherm(R^2=0.996 1) than by the Langmuir isotherm(R^2=0.916 9).The results demonstrate that TAP could be an attractive low-cost adsorbent for removing DMTS from water. 展开更多
关键词 dimethyl trisulfide LOW-COST adsorption isotherms ADSORBENT
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纳米片组装的花球状BiOI光催化剂
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作者 廖春鑫 卢泽强 +2 位作者 陈爱平 朱鸣凡 李春忠 《华东理工大学学报(自然科学版)》 CAS CSCD 北大核心 2022年第1期44-50,共7页
以硝酸铋和碘化钾为原料,水和乙二醇单甲醚的混合液为溶剂,通过水-溶剂热反应制备BiOI可见光光催化剂。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外-可见-漫反射吸收光谱(UV-Vis-DRS)和Brunauer-Emmett-Teller(BET)等方法对样品... 以硝酸铋和碘化钾为原料,水和乙二醇单甲醚的混合液为溶剂,通过水-溶剂热反应制备BiOI可见光光催化剂。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外-可见-漫反射吸收光谱(UV-Vis-DRS)和Brunauer-Emmett-Teller(BET)等方法对样品进行了测试和表征。以甲基橙作为模型污染物,测试了BiOI在可见光下的光催化活性,并探讨了其在可见光下的光催化机理。结果表明:乙二醇单甲醚在混合溶剂中的比例对于BiOI光催化剂的形貌和性能有显著影响,乙二醇单甲醚的体积分数为50%时降解效果最佳,降解率达到77.9%,约为纳米片状BiOI光催化剂的14倍。 展开更多
关键词 BiOI 光催化剂 水-溶剂热 乙二醇单甲醚 花球状 光催化机理
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Solvent-free synthesis of zeolite catalysts 被引量:7
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作者 Xiangju Meng Qinming Wu +1 位作者 Fang Chen Feng-Shou Xiao 《Science China Chemistry》 SCIE EI CAS CSCD 2015年第1期6-13,共8页
The most used method for preparation of zeolites is hydrothermal synthesis from silicate or aluminosilicate gels at temperatures in the range of 60-200 ℃. Excess water used in the industrial process results in severa... The most used method for preparation of zeolites is hydrothermal synthesis from silicate or aluminosilicate gels at temperatures in the range of 60-200 ℃. Excess water used in the industrial process results in several issues, including high autogeneous pressure, low efficiency, pollution, etc. To solve these problems, several strategies have been developed. This review describes the solvent-free synthesis of zeolites. The combination of solvent-free synthesis and organotemplate-free synthesis can open the pathway to a highly sustainable zeolite synthesis protocol in industry. 展开更多
关键词 zeolites SOLVENT-FREE SUSTAINABLE
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