Sunlight-driven degradation of Rhodamine B by peanut-shaped porous BiVO4 nanostructures in the H2O2-containing system

被引：98

作者：

Ge, Ming ^{[1
]}

Liu, Lu ^{[1
]}

Chen, Wei ^{[1
]}

Zhou, Zhen ^{[2
]}

机构：

[1] Nankai Univ, Tianjin Key Lab Environm Remediat & Pollut Contro, Tianjin 300071, Peoples R China

[2] Nankai Univ, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China

来源：

CRYSTENGCOMM | 2012年 / 14卷 / 03期

关键词：

VISIBLE-LIGHT IRRADIATION; PHOTOCATALYTIC DEGRADATION; HYDROTHERMAL PREPARATION; TIO2; SUSPENSION; OXIDATION; WATER; PHENOL; REDUCTION; COMPOSITE; MECHANISM;

D O I：

10.1039/c1ce06264f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

With Rhodamine B as a model compound, the photocatalytic oxidation of organic contaminants in aqueous solution was investigated within a cooperating porous BiVO4/H2O2 system under simulated sunlight irradiation. Peanut-shaped porous BiVO4 was prepared through a simple template-free solvothermal method with high yield, and was used in the cooperating catalyst/H2O2 system. The possible formation mechanism of peanut-shaped BiVO4 nanostructures was investigated. In the peanut-shaped BiVO4/H2O2 system, nearly complete degradation of Rhodamine B was observed after 60 min of irradiation under sunlight irradiation. The as-obtained porous BiVO4 photocatalyst displayed higher photocatalytic activity than those of the reference product hydrothermally synthesized and the photocatalyst P25 in the same catalyst/H2O2/sunlight system. The photocatalytic processes of the BiVO4/H2O2/sunlight system may consist of both OH center dot oxidation and direct hole attack. In addition, the peanut-shaped porous BiVO4 nanostructures were stable and maintained high photocatalytic efficiency during repeated recycles in the H2O2-containing system.

引用

页码：1038 / 1044

页数：7

共 52 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2] Photochemical oxidation processes for the elimination of phenyl-urea herbicides in waters [J].

Benitez, F. Javier ;

Real, Francisco J. ;

Acero, Juan L. ;

Garcia, Carolina .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 138 (02) :278-287

[3] PHOTOELECTROLYSIS AND PHYSICAL-PROPERTIES OF SEMICONDUCTING ELECTRODE WO3 [J].

BUTLER, MA .

JOURNAL OF APPLIED PHYSICS, 1977, 48 (05) :1914-1920

[4] On the photocatalytic degradation of phenol and dichloroacetate by BiVO4: The need of a sacrificial electron acceptor [J].

Castillo, Nikola C. ;

Ding, Laura ;

Heel, Andre ;

Graule, Thomas ;

Pulgarin, Cesar .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2010, 216 (2-3) :221-227

[5] Efficient photocatalytic activity of water oxidation over WO3/BiVO4 composite under visible light irradiation [J].

Chatchai, Ponchio ;

Murakami, Yoshinori ;

Kishioka, Shin-ya ;

Nosaka, Atsuko Y. ;

Nosaka, Yoshio .

ELECTROCHIMICA ACTA, 2009, 54 (03) :1147-1152

[6] Single-crystal nanowires of platinum can be synthesized by controlling the reaction rate of a polyol process [J].

Chen, JY ;

Herricks, T ;

Geissler, M ;

Xia, YN .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (35) :10854-10855

[7] Direct observation of the growth process of MgO nanoflowers by a simple chemical route [J].

Fang, XS ;

Ye, CH ;

Zhang, LD ;

Zhang, JX ;

Zhao, JW ;

Yan, P .

SMALL, 2005, 1 (04) :422-428

[8] Template-Free Synthesis and Photocatalytic Application of Rutile TiO2 Hierarchical Nanostructures [J].

Ge, M. ;

Li, J. W. ;

Liu, L. ;

Zhou, Z. .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2011, 50 (11) :6681-6687

[9] From Hollow Olive-Shaped BiVO4 to n-p Core-Shell BiVO4@Bi2O3 Microspheres: Controlled Synthesis and Enhanced Visible-Light-Responsive Photocatalytic Properties [J].

Guan, Mei-Li ;

Ma, De-Kun ;

Hu, Sheng-Wei ;

Chen, Yan-Jun ;

Huang, Shao-Ming .

INORGANIC CHEMISTRY, 2011, 50 (03) :800-805

[10] Directed Synthesis of Mesoporous TiO2 Microspheres: Catalysts and Their Photocatalysis for Bisphenol A Degradation [J].

Guo, Changsheng ;

Ge, Ming ;

Liu, Lu ;

Gao, Guandao ;

Feng, Yinchang ;

Wang, Yuqiu .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (01) :419-425

← 1 2 3 4 5 6 →