Journal
RSC ADVANCES
Volume 7, Issue 40, Pages 24864-24869Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra02565c
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Funding
- National Natural Science Foundation of China [U1510108, 91545116]
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The morphological characteristics of a photocatalyst is central to its photocatalytic activity for solar energy conversion. Herein, Pt-ZnS/CdS composites comprising ZnS nanosheets, embedded via the geometry and size modulation and tuning of band gap of CdS with 0D, 1D or 2D structure, were investigated for solar hydrogen production. The photoactivity results indicate that the shape and morphology of CdS in the Pt-ZnS/CdS heterojunction play a pivotal role in affecting the photocatalytic performance. CdS with a 1D structure deposited on porous Pt-ZnS nanosheets endow the heterojunction with increased efficiency for the separation and transport of photoinduced electron-hole pairs. The proposed mechanism for the boosted suppression of charge recombination was further confirmed by the transient photocurrent response and photoluminescence.
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