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FeBTC金属-有机凝胶的制备及其对Cr_(2)O_(7)^(2-)的吸附性能——推荐一个物理化学创新实验
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作者 马莎莎 杨祖金 张建勇 《大学化学》 CAS 2024年第8期314-323,共10页
金属-有机凝胶的制备与吸附性能研究是结合当前科研前沿研究成果设计改进的一个综合性物理化学实验。以均苯三甲酸和硝酸铁为主要原料,通过简单混和制备FeBTC金属-有机凝胶,并通过不同干燥方法干燥FeBTC凝胶。研究了FeBTC的组成结构,并... 金属-有机凝胶的制备与吸附性能研究是结合当前科研前沿研究成果设计改进的一个综合性物理化学实验。以均苯三甲酸和硝酸铁为主要原料,通过简单混和制备FeBTC金属-有机凝胶,并通过不同干燥方法干燥FeBTC凝胶。研究了FeBTC的组成结构,并通过N_(2)吸附脱附测定FeBTC的比表面积。进一步研究FeBTC对Cr_(2)O_(7)^(2-)的吸附动力学,用于废水处理。 展开更多
关键词 金属-有机凝胶 吸附动力学 干燥方法
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Controlled release and enhanced antibacterial activity of salicylic acid by hydrogen bonding with chitosan 被引量:2
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作者 zujin yang Yanxiong Fang HongbingJi 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2016年第3期421-426,共6页
Microcapsules of salicylic acid (SA) with chitosan were prepared by spray drying method. Various analytical methods were used to characterize the nature of microcapsules. Fourier-transform infrared spectroscopy (F... Microcapsules of salicylic acid (SA) with chitosan were prepared by spray drying method. Various analytical methods were used to characterize the nature of microcapsules. Fourier-transform infrared spectroscopy (FTIR) confirmed the presence of intermolecular interactions between chitosan and SA. Particle size analysis showed that the average size ofmicrocapsules ranged from 2 to 20 pro, Scanning electron microscopy (SEM) studies indicated that the microspheres were spherical and had a relatively smooth surface. Microbiological assay of antibacterial activity for SA and its microcapsules was measured using different bacterial strains. It was found that the antibacterial activity of SA was improved after the formation of microcapsules. The in vitro release profile showed that the microcapsules could control SA release from I h to 4 h. Kinetic studies revealed that the release pattern follows Korsmeyer-Peppas mechanism. Enhanced antibacterial activity of the SA micro- capsules was attributed to the synergistic effects of intermolecular hydrogen-bonding interactions N-H...O and O-H...O=C between SA and chitosan. It was also confirmed by quantum chemical calculation. 展开更多
关键词 Salicylic acid MICROCAPSULE Release performance Antibacterial activity Quantum-chemical calculations
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Continuous flow synthesis of porous materials 被引量:1
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作者 Yu Xin Sheng Peng +2 位作者 Junxing Chen zujin yang Jianyong Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第6期1448-1461,共14页
Porous materials play an important role in chemical catalysis,separation and other industrial applications.High-efficiency preparation of porous materials has become an active research area.Conventional synthesis of p... Porous materials play an important role in chemical catalysis,separation and other industrial applications.High-efficiency preparation of porous materials has become an active research area.Conventional synthesis of porous materials has been dominated by one-pot solution processing conditions carried out by bulk mixing under conventional electric heating via hydrothermal,solvothermal or ionothermal reactions where high temperatures and pressures are the standard.Continuous flow synthesis has many key advantages in terms of efficient mass and heat transfer,precise control of residence times,improved opportunities for automation and feedback control of synthesis,scaling-up reactions and improved safety parameters compared to above mentioned conventional batch scale synthetic methods.In this review,continuous flow synthesis of various crystalline porous materials such as metal-organic frameworks(MOFs),covalent-organic frameworks(COFs),porous organic cages and zeolites is discussed.Combination of microfluidic methods with other techniques are also shown including various heating ways and various methods of substrate adding. 展开更多
关键词 Porous materials Continuous flow Metal-organic frameworks Zeolites Covalent-organic frameworks
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