Journal
ADVANCED MATERIALS
Volume 30, Issue 45, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201804368
Keywords
cadmium sulfide; charge separation; hydrogen evolution; photocatalysis; zeolites
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Funding
- Research Grants Council of the Hong Kong Special Administrative Region [14308018]
- 111 Project of China [B17020]
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Efficient light harvesting and charge separation are of great importance in solar-energy conversion on photocatalysts. Herein, the synthesis of a novel hollow porous CdS photocatalyst with effectively restrained electron-hole recombination is reported. By using microporous zeolites as a host and a hard template, ultrasmall Pd and PdS nanoparticles can be anchored separately onto the inner and outer surfaces of a hollow CdS structure. The metallic Pd pulls the photoexcited electrons away from CdS while PdS pushes the holes for more thorough oxidation of the sacrificial agent. The final Pd@CdS/PdS product exhibits superior visible-light-driven photocatalytic H-2 evolution rate of up to 144.8 mmol h(-1) g(-1). This is among the highest values of all the reported CdS-based catalysts. This synthetic approach may be used to fabricate other highly efficient catalysts with spatially separated cocatalysts.
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