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Influence of pH Value on Photocatalytic Activity of Bi4Ti3O12 Crystals Obtained by Hydrothermal Method
Xue Lin*,Yv-ning Gong,Yao-dan Zhang,Yong-sheng Yan,Qing-feng Guan
Author NameAffiliationE-mail
Xue Lin* Key Laboratory of Preparation and Application of Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping 136000, China jlsdlinxue@126.com 
Yv-ning Gong Key Laboratory of Preparation and Application of Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping 136000, China  
Yao-dan Zhang Key Laboratory of Preparation and Application of Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping 136000, China  
Yong-sheng Yan School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China  
Qing-feng Guan School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China  
Abstract:
Bi4Ti3O12 (BIT) crystals were controllably synthesized via a facile hydrothermal process without adding any surfactant or template. The morphologies of BIT with nanosphere, nanoplate, nanobelt, and nanosheet can be selectively obtained by adjusting the pH value of the reactant. The formation mechanisms of these distinctive morphologies were then discussed based on the structural analysis of samples obtained at different pH values. BIT sample prepared at pH=1 showed the highest photocatalytic activity under visible light irradiation. The photocatalytic activities difference for the BIT samples synthesized at different pH values was studied based on their shape, size, and the variation of local structure.
Key words:  Photocatalysis, Bi4Ti3O12, pH value, Local structure
FundProject:
pH值对水热法制备的Bi4Ti3O12晶体光催化活性的影响
林雪*,宫宇宁,张耀丹,闫永胜,关庆丰
摘要:
采用无助剂、非模板的水热法可控制备Bi4Ti3O12 (BIT)晶体.通过调节反应物的pH值可以选择性地获得BIT纳米球、纳米带和纳米片.通过对不同pH值制备的样品的结构分析研究了这些不同形貌的形成机制.pH值为1制备的BIT样品在可见光下光催化活性最高.基于不同pH值制备的BIT样品的形状、尺寸和局部结构振动分析了光催化活性不同的原因.
关键词:  光催化剂,钛酸铋,pH值,局部结构
DOI:10.1063/1674-0068/27/02/209-213
分类号: