Cu-Doped ZnS Hollow Particle with High Activity for Hydrogen Generation from Alkaline Sulfide Solution under Visible Light

Visible light sensitive and highly active Cu-doped ZnS hollow photocatalyst particles “Cu-ZnS-shell” were successfully developed. These particles could generate H2 through photocatalytic decomposition of HS− ion in Na2S solution. The photoactivity under xenon lamp irradiation was 6 and 130 times hig...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry of materials 2008-03, Vol.20 (5), p.1997-2000
Main Authors: Arai, Takeo, Senda, Shin-ichiro, Sato, Yoshinori, Takahashi, Hideyuki, Shinoda, Kozo, Jeyadevan, Balachandran, Tohji, Kazuyuki
Format: Article
Language:English
Subjects:
Catalysis and Catalysts
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Visible light sensitive and highly active Cu-doped ZnS hollow photocatalyst particles “Cu-ZnS-shell” were successfully developed. These particles could generate H2 through photocatalytic decomposition of HS− ion in Na2S solution. The photoactivity under xenon lamp irradiation was 6 and 130 times higher than that of copper-free “ZnS-shell” and coprecipitated ZnS particles, respectively. “Cu-ZnS-shell” particles were prepared by doping the “ZnS-shell” particles synthesized using zinc oxide as precursor with Cu, utilizing the difference in ionization tendency between zinc and copper. Though the photoactivity of “ZnS-shell” was higher than that of coprecipitated ZnS, their photoactivity under visible light conditions was low. However, the “Cu-ZnS-shell” was active to light of wavelengths higher than 440 nm and is preferred over CdS, which requires an expensive support metal catalyst such as platinum to decompose HS− ion.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm071803p