Enhanced photocatalytic activity of bismuth-tungsten mixed oxides for oxidative decomposition of acetaldehyde under visible light irradiation

被引：44

作者：

Amano, Fumiaki ^{[1
,2
]}

Nogami, Kohei ^{[2
]}

Ohtani, Bunsho ^{[1
,2
]}

机构：

[1] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0010021, Japan

[2] Hokkaido Univ, Grad Sch Environm Sci, Sapporo, Hokkaido 0600810, Japan

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 20卷

关键词：

Photocatalysis; Bi2WO6; Aurivillius phase; Nanoplate; Visible light; DEGRADATION; BI2WO6; ION;

D O I：

10.1016/j.catcom.2011.12.038

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：

Russelite bismuth tungstate (Bi2WO6) flake-ball particles prepared by a hydrothermal reaction method have been reported to be visible-light-responsive photocatalysts for mineralization of organic compounds. Here, we report new bismuth-tungsten mixed oxide particles with a tungsten-to-bismuth ratio (W/Bi ratio) in feed of 1.0, which is two-times higher than the stoichiometric ratio of Bi2WO6 (W/Bi = 0.50). Compared to the conventional Bi2WO6 flake-ball particles, the tungsten-rich particles exhibited a narrow band gap (2.70 eV), large specific surface area due to the rectangular platelet nanostructure. and high level of photocatalytic activity for oxidative decomposition of acetaldehyde. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：12 / 16

页数：5

共 23 条

[11] Photocatalytic Degradation of 2-Propanol under Irradiation of Visible Light by Nanocrystalline Titanium(IV) Oxide Modified with Rhodium Ion Using Adsorption Method [J].

Kitano, Sho ;

Hashimoto, Keiji ;

Kominami, Hiroshi .

CHEMISTRY LETTERS, 2010, 39 (06) :627-629

[12] Mineralization of organic acids in aqueous suspensions of gold nanoparticles supported on cerium(IV) oxide powder under visible light irradiation [J].

Kominami, Hiroshi ;

Tanaka, Atsuhiro ;

Hashimoto, Keiji .

CHEMICAL COMMUNICATIONS, 2010, 46 (08) :1287-1289

[13] H2 or O2 evolution from aqueous solutions on layered oxide photocatalysts consisting of Bi3+ with 6s2 configuration and d0 transition metal ions [J].

Kudo, A ;

Hijii, S .

CHEMISTRY LETTERS, 1999, (10) :1103-1104

[14] Efficient Visible Light Active CaFe2O4/WO3 Based Composite Photocatalysts: Effect of Interfacial Modification [J].

Liu, Zhifu ;

Zhao, Zhi-Gang ;

Miyauchi, Masahiro .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (39) :17132-17137

[15] Photocatalytic reaction over iron hydroxides: A novel visible-light-responsive photocatalyst [J].

Murakami, Naoya ;

Matsuo, Takuma ;

Tsubota, Toshiki ;

Ohno, Teruhisa .

CATALYSIS COMMUNICATIONS, 2011, 12 (05) :341-344

[16] Development of a visible-light-responsive rutile rod by site-selective modification of iron(III) ion on {111} exposed crystal faces [J].

Murakami, Naoya ;

Ono, Asami ;

Nakamura, Misa ;

Tsubota, Toshiki ;

Ohno, Teruhisa .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 97 (1-2) :115-119

[17] Visible-Light-Driven Cu(II)-(Sr1-yNay)(Ti1-xMox)O3 Photocatalysts Based on Conduction Band Control and Surface Ion Modification [J].

Qiu, Xiaoqing ;

Miyauchi, Masahiro ;

Yu, Huogen ;

Irie, Hiroshi ;

Hashimoto, Kazuhito .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (43) :15259-15267

[18] Correlation of crystal structures and electronic structures and photocatalytic properties of the W-containing oxides [J].

Tang, JW ;

Ye, JH .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (39) :4246-4251

[19] Photocatalytic decomposition of organic contaminants by Bi2WO6 under visible light irradiation [J].

Tang, JW ;

Zou, ZG ;

Ye, JH .

CATALYSIS LETTERS, 2004, 92 (1-2) :53-56

[20] Discrimination of the active crystalline phases in anatase-rutile mixed titanium(IV) oxide photocatalysts through action spectrum analyses [J].

Torimoto, T ;

Nakamura, N ;

Ikeda, S ;

Ohtani, B .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (23) :5910-5914

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