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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：中科院山西煤化所
学位：博士
所在单位：化工学院
学科：功能材料化学与化工. 物理化学
办公地点：大连理工大学 西校区化工综合楼A212
联系方式：zbzhao@dlut.edu.cn
电子邮箱：zbzhao@dlut.edu.cn
Mesoporous microspheres composed of carbon-coated TiO2 nanocrystals with exposed {001} facets for improved visible light photocatalytic activity
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论文类型：期刊论文
发表时间：2014-04-05
发表刊物：APPLIED CATALYSIS B-ENVIRONMENTAL
收录刊物：SCIE、EI、Scopus
卷号：147
页面范围：958-964
ISSN号：0926-3373
关键字：Anatase with active facets; Assembly; Carbon deposition; Visible light photocatalytic activity
摘要：Mesoporous TiO2 microspheres composed of carbon-coated anatase nanocrystals w ith exposed {0 0 1} facets (TiO2(0 0 1)/C) have been successfully synthesized by a one-pot hydrothermal strategy in the presence of glucose and hydrofluoric acid (HF). It is demonstrated that the presence of HF promotes the growth of anatase nanocrystal with {0 0 1} facet exposure, while glucose induces TiO2 {0 0 1} nanocrystals to assembly into mesoporous TiO2 microspheres, as well as acts as carbon source in the formation of carbonaceous layer deposited on the TiO2 grains via C-O-Ti bond. The TiO2(0 0 1)/C microspheres show an excellent visible-light driven photocatalytic performance for the degradation of methyl blue. These results provide insight into the preparation, assembly and modification of TiO2 nanocrystals with active facets for potential application in environment protection. (C) 2013 Elsevier B.V. All rights reserved.