微米级石英球负载Bi4Ti3O12光催化剂的溶胶-凝胶制备及性能研究

Q Chemistry

Journal of Advanced Oxidation Technologies Pub Date : 2016-01-01 DOI:10.1515/jaots-2016-0215

Li Li, Zheng Ma, Feifei Bi, Hong Li, Wenjie Zhang, Hongbo He

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引用次数: 4

摘要

摘要采用溶胶-凝胶法制备了Bi4Ti3O12/SiO2复合光催化剂。支撑在微米级石英球上的Bi4Ti3O12呈钙钛矿结构，晶体尺寸不断缩小。SEM和EDX图像显示Bi4Ti3O12在石英球上分散良好。由于多孔结构的限制，Bi4Ti3O12和χBi4Ti3O12/SiO2的比表面积都很小。负载SiO2后，Bi4Ti3O12的化学环境没有明显变化。大多数负载的bi4ti3o12 /SiO2的光催化活性都有所提高，在50%的bi4ti3o12 /SiO2上活性最大。活性艳红- x3b在50%Bi4Ti3O12/SiO2上，在紫外光照射90 min后实现了完全脱色。

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Sol-gel Preparation and Properties of Bi4Ti3O12 Photocatalyst Supported on Micrometer-sized Quartz Spheres

Abstract Composite Bi4Ti3O12/SiO2 photocatalysts were prepared through sol-gel synthesizing of Bi4Ti3O12 on quartz spheres. The Bi4Ti3O12 supported on the micrometer-sized quartz spheres is in a perovskite structure with shrinking crystallite size. SEM and EDX images demonstrate the well dispersion of Bi4Ti3O12 on the quartz spheres. Both Bi4Ti3O12 and χBi4Ti3O12/SiO2 have small surface area due to the very limited porous structure. Chemical environments of Bi4Ti3O12 do not noticeably change after loading on SiO2. Photocatalytic activities of most supported χBi4Ti3O12/SiO2 are improved with the maximum activity on 50%Bi4Ti3O12/SiO2. Total decoloration of Reactive Brilliant Red-X3B is achieved on 50%Bi4Ti3O12/SiO2 after 90 min under UV light irradiation.

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来源期刊

Journal of Advanced Oxidation Technologies 化学-物理化学

CiteScore

0.88

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： The Journal of advanced oxidation technologies (AOTs) has been providing an international forum that accepts papers describing basic research and practical applications of these technologies. The Journal has been publishing articles in the form of critical reviews and research papers focused on the science and engineering of AOTs for water, air and soil treatment. Due to the enormous progress in the applications of various chemical and bio-oxidation and reduction processes, the scope of the Journal is now expanded to include submission in these areas so that high quality submission from industry would also be considered for publication. Specifically, the Journal is soliciting submission in the following areas (alphabetical order): -Advanced Oxidation Nanotechnologies -Bio-Oxidation and Reduction Processes -Catalytic Oxidation -Chemical Oxidation and Reduction Processes -Electrochemical Oxidation -Electrohydraulic Discharge, Cavitation & Sonolysis -Electron Beam & Gamma Irradiation -New Photocatalytic Materials and processes -Non-Thermal Plasma -Ozone-based AOTs -Photochemical Degradation Processes -Sub- and Supercritical Water Oxidation -TiO2 Photocatalytic Redox Processes -UV- and Solar Light-based AOTs -Water-Energy (and Food) Nexus of AOTs