Visible light-induced photocatalytic activity of delafossite AgMO2 (M = Al, Ga, In) prepared via a hydrothermal method

被引：102

作者：

Dong, Hui ^{[1
]}

Li, Zhaohui ^{[1
]}

Xu, Ximing ^{[1
]}

Ding, Zhengxin ^{[1
]}

Wu, Ling ^{[1
]}

Wang, Xuxu ^{[1
]}

Fu, Xianzhi ^{[1
]}

机构：

[1] Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 89卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

Hydrothermal; Delafossite; AgMO2; Visible light; Photocatalytic; NOBLE METAL OXIDES; ELECTRONIC-STRUCTURE; THIN-FILMS; SEMICONDUCTOR PHOTOCATALYSIS; TRANSPARENT OXIDES; TIO2; SURFACES; DEGRADATION; IRRADIATION; COPPER; SILVER;

D O I：

10.1016/j.apcatb.2009.01.018

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：

Delafossite-structured oxides AgMO2 (M = Al, Ga, In) were successfully synthesized using fluoro(ethylene-propylene) (FEP) pouch via a facile hydrothermal method. The obtained samples were characterized by X-ray diffraction (XRD), BET surface area measurement, UV-vis diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of the as-prepared samples was evaluated by the degradation of rhodamine B (RhB) and methyl orange (MO) under visible light irradiation. All three samples showed photocatalytic activity for RhB and MO degradation under visible light irradiations and their photocatalytic activity followed the order of AgInO2 > AgGaO2 > AgAlO2. The relative high photocatalytic activity of AgInO2 can be attributed to its high quantity of the surface hydroxyl groups. The photocatalytic mechanism of AgInO2 was proposed and its stability was also investigated. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：551 / 556

页数：6

共 41 条

[21] Ag2CuMnO4:: A new silver copper oxide with delafossite structure [J].