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Facile Synthesis and Characterization of Nanoporous NiO with Folic Acid as photodegredation Catalyst for Congo Red

Materials Sciences and Applications 2012年第10期3卷 697-703页

作者： Faezeh Farzaneh Sara Haghshenas Department of Chemistry University of Alzahra Vanak P.O.Box *** Vanak Tehran Iran

In this study nanoporous NiO was prepared using Ni(CH3COO)2,4H2O, folic acid and water as starting material, template and solvent respectively, by sol gel method followed by calcination at 400℃. The solid product was characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) Fourier transform infrared (FT-IR) and photoluminescence (PL) techniques. The particle size of the nanoparticles estimated by XRD was in good agreement with the particle size obtained by TEM analysis (4-5nm). It was also found that the prepared nanoporous NiO show very good activity for photodegredation of dye organic pollutants such as Congo red (91%) during 1.5 hours.

关键词： Nanoporous NiO photodegredation Congo Red Folic Acid

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ZnO sheets prepared with a light-assisted growth method for improved photodegradation performance

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Journal of Energy Chemistry 2016年第4期25卷 636-640页

作者： Xuewen Wang Yuanquan Miao Wuyou Wang Gang Feng Rongbin Zhang The Institute of Applied Chemistry Department of ChemistryNanchang University

ZnO as a semiconductor photocatalyst is widely applied in the photodegradation of organic pollutants. Its photocatalytic activity is greatly decreased because of the recombination of photoexcited electrons and holes in the bulk. In this work, ZnO sheets are synthesized by adjusting the NaOH concentration under light irradiation at room temperature. Compared with ZnO particles, the ZnO sheets prepared with a light-assisted growth method exhibit a higher rate of photodegradation of methylene blue under UV visible light irradiation. The improved photodegradation rate is mainly attributed to the shortened transport distance of photoexcited electrons, the high surface area, and the surface atom structure modified by the light-assisted growth process. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

关键词： ZnO sheets Light-assisted photodegredation Transport distance

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