NDLI: Highly active ZnxCd1−xS photocatalysts containing earth abundant elements only for H2 production from water under visible light

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Catalysis Science & Technology Vol - 1 Issue - 5

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Catalysis Science & Technology Vol - 1 Issue - 1

Highly active Zn_xCd_1−xS photocatalysts containing earth abundant elements only for H₂ production from water under visible light

Content Provider	Royal Society of Chemistry (RSC)
Author	Zheng, Jianwei Wang, Yabo Wu, Jianchun Xu, Rong
Copyright Year	2011
Abstract	A series of ZnxCd1−xS photocatalysts were synthesized via a solvothermal method using ethylenediamine (EDA) as the solvent. The structural, optical and morphological properties have been investigated extensively by various analytical techniques. It has been found that ZnxCd1−xS (x ≤ 0.5 in the precursor) nanorods and nanoparticles can be formed as good homogeneous solid solutions. During the synthesis process, EDA played an important dual role as the solvent and the coordinating agent, which contributed to the formation of nanosized ZnxCd1−xS solid solutions. Efficient hydrogen production from the aqueous solution containing S2− and SO32− sacrificial reagents was observed over these photocatalysts under visible light irradiation (λ ≥ 420 nm) in the absence of any expensive metal components and co-catalysts. The highest photocatalytic activity for hydrogen production was obtained over Zn0.5Cd0.5S with a rate of 1097 μmol h−1 and the corresponding quantum efficiency of 30.4% at 420 nm. These values are much higher than those previously reported for Zn–Cd binary sulfide photocatalysts. The excellent photocatalytic performance can be attributed to the efficient visible light absorption and the suitable band structure due to the formation of solid solutions.
Starting Page	940
Ending Page	947
Page Count	8
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	1
Issue Number	6
Journal	Catalysis Science & Technology
DOI	10.1039/c1cy00143d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Sulfide Ethylenediamine Quantum Hydrogen Electronic band structure Electronic design automation Solvent
Content Type	Text
Resource Type	Article
Subject	Catalysis

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