TY - JOUR
T1 - Cu-doped ZnS hollow particle with high activity for hydrogen generation from alkaline sulfide solution under visible light
AU - Arai, Takeo
AU - Senda, Shin Ichiro
AU - Sato, Yoshinori
AU - Takahashi, Hideyuki
AU - Shinoda, Kozo
AU - Jeyadevan, Balachandran
AU - Tohji, Kazuyuki
PY - 2008/3/11
Y1 - 2008/3/11
N2 - 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.
AB - 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.
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U2 - 10.1021/cm071803p
DO - 10.1021/cm071803p
M3 - Article
AN - SCOPUS:42449163930
VL - 20
SP - 1997
EP - 2000
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 5
ER -