Synthesis and characterization of Pt/BiOI nanoplate catalyst with enhanced activity under visible light irradiation

被引：162

作者：

Yu, Changlin ^{[1
]}

Yu, Jimmy C. ^{[2
,3
]}

Fan, Caifeng ^{[1
]}

Wen, Herui ^{[1
]}

Hu, Shengjie ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Sch Mat & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China

[2] Chinese Univ Hong Kong, Dept Chem, Ctr Novel Funct Mol, Shatin, Hong Kong, Peoples R China

[3] Chinese Univ Hong Kong, Environm Sci Programme, Shatin, Hong Kong, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2010年 / 166卷 / 03期

基金：

中国国家自然科学基金;

关键词：

BiOI nanoplate; Deposited platinum nanoparticle; Electron-hole separation; Photocatalysis; PHOTOCATALYTIC ACTIVITY; TITANIUM-DIOXIDE; DOPED TIO2; SONOCHEMICAL FABRICATION; DEGRADATION; OXIDATION; SPECTROSCOPY; TRANSITION; KINETICS; CARBON;

D O I：

10.1016/j.mseb.2009.11.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of Pt/BiOI nanoplate catalysts have been synthesized by a solution combination with photodeposited method at room temperature. The as-synthesized products have been investigated by photocatalytic reaction tests and characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) emission spectroscopy, and UV-vis diffuse reflectance spectra (DRS). The results show that platinum has important role in promoting the photocatalytic performance of BiOI in degradation of acid orange II in an aqueous solution under visible light (lambda > 420 nm) irradiation. The deposition of optimal amount of 0.2 wt% Pt brings about a two-time increase in the photocatalytic performance. The dispersed platinum nanoparticles over BiOI nanoplate could decrease the recombination rate of the e(-)/h(+) pairs, hence promoting the photocatalytic activity. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：213 / 219

页数：7

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