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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.