Homogeneous anchoring of TiO2 nanoparticles on graphene sheets for waste water treatment

被引：107

作者：

Zhang, Kan ^{[1
]}

Kemp, K. Christian ^{[1
]}

Chandra, Vimlesh ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem, Ctr Superfunct Mat, Pohang 790784, South Korea

来源：

MATERIALS LETTERS | 2012年 / 81卷

关键词：

Photocatalytic; Graphene; TiO2; nanoparticle; Environmental remediation; REDUCTION;

D O I：

10.1016/j.matlet.2012.05.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photocatalytic properties of TiO2 nanoparticles are limited due to their UV light response as well as rapid recombination of the generated electron-hole pairs. With the formation of an interface between TiO2 and graphene sheets there is a decrease in the electron-hole recombination rate. A homogeneous anchoring of TiO2 nanoparticles on graphene sheets was achieved via esterification between hydroxyl groups of TiO2 and carboxylic groups of graphene acid. The reduction of Cr (VI) to Cr (III) in sunlight shows an optimized photocatalytic reduction for 5% graphene loading in TiO2. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：127 / 130

页数：4

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