Tuning the Relative Concentration Ratio of Bulk Defects to Surface Defects in TiO2 Nanocrystals Leads to High Photocatalytic Efficiency

被引：1024

作者：

Kong, Ming ^{[1
]}

Li, Yuanzhi ^{[1
]}

Chen, Xiong ^{[1
]}

Tian, Tingting ^{[1
]}

Fang, Pengfei ^{[2
]}

Zheng, Feng ^{[2
]}

Zhao, Xiujian ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China

[2] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 41期

关键词：

CHARGE-CARRIER DYNAMICS; ANATASE; CRYSTALLINE; FABRICATION; ABSORPTION; NANOSHEETS; REDUCTION; PARTICLES; WATER;

D O I：

10.1021/ja207826q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

TiO2 nanocrystals with tunable bulk/surface defects were synthesized and characterized with TEM, XRD, BET, positron annihilation, and photocurrent measurements. The effect of defects on photocatalytic activity was studied. It was found for the first time that decreasing the relative concentration ratio of bulk defects to surface defects in TiO2 nanocrystals could significantly improve the separation efficiency of photogenerated electrons and holes, thus significantly enhancing the photocatalytic efficiency.

引用

页码：16414 / 16417

页数：4

共 46 条

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