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溶剂热法制备多级纳米结构Bi_(4)Ti_(3)O_(12)及其光电性能研究

Solvothermal synthesis of hierarchical nano-Bi_(4)Ti_(3)O_(12) and its photoelectric performance
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摘要 采用溶剂热法制备多级结构钛酸铋(Bi_(4)Ti_(3)O_(12))纳米材料,该材料由纳米片堆叠成层状,再自组装成5μm微米球状结构。表征该Bi_(4)Ti_(3)O_(12)纳米结构的光电性能,并与纳米片空心球结构Bi_(4)Ti_(3)O_(12)的光电性能进行对比。结果表明,该多级结构Bi_(4)Ti_(3)O_(12)的光电性能较纳米片空心球结构Bi_(4)Ti_(3)O_(12)提高了10倍。紫外-可见光吸收谱表明多级结构Bi_(4)Ti_(3)O_(12)的禁带宽度小于纳米片空心球结构Bi_(4)Ti_(3)O_(12)。多级结构Bi_(4)Ti_(3)O_(12)材料中纳米片暴露的晶面是影响材料光电性能的重要因素。 Hierarchical nano-Bi_(4)Ti_(3)O_(12) constructed by nanoplates stacking in stratiform were prepared by a solvothermal process.The 3D superstructures exhibit a mono-dispersed sphere morphology with a diameter about 5μm.Photoelectric performance of hierarchical nano-Bi_(4)Ti_(3)O_(12) was characterized and compared with Bi_(4)Ti_(3)O_(12) hollow microspheres.Results showed that photoelectric performance increased by 10 times.UV/Vis showed that band gap of hierarchical nano-Bi_(4)Ti_(3)O_(12) was narrower than that of hollow microspheres Bi_(4)Ti_(3)O_(12).Exposed crystal faces are key factors affecting photoelectric performance of hierarchical nano-Bi_(4)Ti_(3)O_(12).
作者 陈光辉 Chen Guanghui(Hunan University of Science and Engineering,Yongzhou 425000,Hunan,China)
机构地区 湖南科技学院
出处 《工业催化》 CAS 2022年第4期56-60,共5页 Industrial Catalysis
基金 永州市科技创新指导性项目(永科发[2017]41号) 湖南科技学院项目(18XKY069)。
关键词 催化剂工程 光电性能 Bi_(4)Ti_(3)O_(12) 多级结构 catalyst engineering photoelectric performance Bi_(4)Ti_(3)O_(12) hierarchical structure
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