Optimization of CdS/TiO2 nano-bulk composite photocatalysts for hydrogen production from Na2S/Na2SO3 aqueous electrolyte solution under visible light (λ ≥ 420 nm)

被引：186

作者：

Jang, Jum Suk

Ji, Sang Min

Bae, Sang Won

Son, Hyo Chang

Lee, Jae Sung

机构：

[1] POSTECH, Eco Friendly Catalysis & Energy Lab, NRL, Dept Chem Engn, Pohang 790784, South Korea

[2] POSTECH, Sch Environm Sci & Engn, Pohang 790784, South Korea

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2007年 / 188卷 / 01期

关键词：

CdS; TiO2; nano-bulk composite (NBC); H-2; evolution;

D O I：

10.1016/j.jphotochem.2006.11.027

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：

A CdS/TiO2 nano-bulk composite photocatalyst consisting of bulky CdS with a high crystallinity decorated with nanosized TiO2 particles was fabricated by precipitation method and sol-gel synthesis. This configuration of the composite photocatalyst exhibited a very high rate of hydrogen production under visible light irradiation (lambda >= 420 nm) from water containing sulfide and sulfite as hole scavengers. In this work, we investigated the physicochemical properties of CdS(bulk)/TiO2 composite photocatalysts and optimized their preparation conditions for the high photocatalytic activity of hydrogen production from water containing Na2S and Na2SO3 as a sacrificial reagents under visible light irradiation. (c) 2006 Elsevier B. V. All rights reserved.

引用

页码：112 / 119

页数：8

共 25 条

[1] BUHLER N, 1984, J PHYS CHEM-US, V88, P3261, DOI 10.1021/j150659a025
[2] New aspects of heterogeneous photocatalysts for water decomposition
Domen, K
Hara, M
Kondo, JN
Takata, T
Kudo, A
Kobayashi, H
Inoue, Y
[J]. KOREAN JOURNAL OF CHEMICAL ENGINEERING, 2001, 18 (06) : 862 - 866
[3] VISIBLE-LIGHT INDUCED WATER CLEAVAGE AND STABILIZATION OF N-TYPE CDS TO PHOTOCORROSION WITH SURFACE ATTACHED POLYPYRROLE CATALYST COATING
FRANK, AJ
HONDA, K
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1982, 86 (11) : 1933 - 1935
[4] Preparation and photocatalytic activities of a semiconductor composite of CdS embedded in a TiO2 gel as a stable oxide semiconducting matrix
Fujii, H
Ohtaki, M
Eguchi, K
Arai, H
[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1998, 129 (01) : 61 - 68
[5] PHOTOCATALYTIC ACTIVITY AND THE ENERGY-LEVELS OF ELECTRONS IN A SEMICONDUCTOR PARTICLE UNDER IRRADIATION
FUJII, M
KAWAI, T
KAWAI, S
[J]. CHEMICAL PHYSICS LETTERS, 1984, 106 (06) : 517 - 522
[6] Fabrication of CdS/TiO2 nano-bulk composite photocatalysts for hydrogen production from aqueous H2S solution under visible light
Jang, Jum Suk
Li, Wei
Oh, Se Hyuk
Lee, Jae Sung
[J]. CHEMICAL PHYSICS LETTERS, 2006, 425 (4-6) : 278 - 282
[7] Highly efficient water splitting into H2 and O2 over lanthanum-doped NaTaO3 photocatalysts with high crystallinity and surface nanostructure
Kato, H
Asakura, K
Kudo, A
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (10) : 3082 - 3089
[8] LaMnO3/CdS nanocomposite:: a new photocatalyst for hydrogen production from water under visible light irradiation
Kida, T
Guan, GQ
Yoshida, A
[J]. CHEMICAL PHYSICS LETTERS, 2003, 371 (5-6) : 563 - 567
[9] An undoped, single-phase oxide photocatalyst working under visible light
Kim, HG
Hwang, DW
Lee, JS
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (29) : 8912 - 8913
[10] Photocatalytic nanodiodes for visible-light photocatalysis
Kim, HG
Borse, PH
Choi, WY
Lee, JS
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (29) : 4585 - 4589

← 1 2 3 →