Tailoring AgI nanoparticles for the assembly of AgI/BiOI hierarchical hybrids with size-dependent photocatalytic activities

被引：135

作者：

Cheng, Hefeng ^{[1
]}

Wang, Wenjun ^{[1
]}

Huang, Baibiao ^{[1
]}

Wang, Zeyan ^{[1
]}

Zhan, Jie ^{[1
]}

Qin, Xiaoyan ^{[1
]}

Zhang, Xiaoyang ^{[1
]}

Dai, Ying ^{[2
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 24期

基金：

中国国家自然科学基金;

关键词：

VISIBLE-LIGHT IRRADIATION; CATION-EXCHANGE REACTIONS; HIGHLY EFFICIENT; NANOSTRUCTURED MATERIALS; HOLLOW MICROSPHERES; BIOX X; NANOCRYSTALS; WATER; BR; CL;

D O I：

10.1039/c3ta10849j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A facile ion exchange route between BiOI hierarchical microspheres and AgNO3 solution is explored to synthesize AgI/BiOI hierarchical hybrids that consist of AgI nanoparticles (NPs) uniformly anchored on the surface of BiOI nanosheets. With the addition of poly(vinylpyrrolidone) (PVP) surfactant molecules, the size of the AgI NPs can be tailored in the range of 55-16 nm. Evaluated by the photodecomposition of 2,4-dichlorophenol (2,4-DCP) solution under visible light irradiation, the AgI NPs/BiOI hybrids displayed highly efficient photocatalytic activities. What is more, as the size of the AgI NPs decreases, the AgI/BiOI hybrids exhibit enhanced photocatalytic performance, which is believed to be related to the larger number of surface active sites and faster spatial charge transfer.

引用

页码：7131 / 7136

页数：6

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