Nanosized BiVO4 with high visible-light-induced photocatalytic activity: Ultrasonic-assisted synthesis and protective effect of surfactant

被引：150

作者：

Shang, Meng ^{[1
]}

Wang, Wenzhong ^{[1
]}

Zhou, Lin ^{[1
]}

Sun, Songmei ^{[1
]}

Yin, Wenzong ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 172卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Nanosize; BiVO4; Ultrasonic; PEG; Visible-light photocatalysis; MESOPOROUS TITANIUM-DIOXIDE; HYDROTHERMAL PREPARATION; PHOTOELECTROCHEMICAL DECOMPOSITION; SONOCHEMICAL SYNTHESIS; FILM ELECTRODES; RHODAMINE-B; THIN-FILMS; IRRADIATION; WATER; DEGRADATION;

D O I：

10.1016/j.jhazmat.2009.07.017

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nanosized BiVO4 with high visible-light-induced photocatalytic activity was successfully synthesized via ultrasonic-assisted method with polyethylene glycol (PEG). The BiVO4 sample prepared under ultrasonic irradiation with 1 g PEG for 30 min was consisted of small nanoparticles with the size of ca. 60 nm. The effects of ultrasonic irradiation and surfactant were investigated. The nanosized BiVO4 exhibited excellent visible-light-driven photocatalytic efficiency for degrading organic dye, which was increased to nearly 12 times than that of the products prepared by traditional solid-state reaction. Besides decoloring, the reduction of chemical oxygen demand (COD) concentration was also observed in the degradation of organic dye, further demonstrating the photocatalytic performance of BiVO4. After five recycles, the catalyst did not exhibit any significant loss of photocatalytic activity, confirming the photocatalyst is essentially stable. Close investigation revealed that the crystal size. BET surface area, and appropriate band gap of the as-prepared BiVO4 could improve the photocatalytic activities. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：338 / 344

页数：7

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