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A Hollow Porous CdS Photocatalyst
Author(s) -
Sun Qiming,
Wang Ning,
Yu Jihong,
Yu Jimmy C.
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201804368
Subject(s) - photocatalysis , materials science , microporous material , catalysis , porosity , nanoparticle , visible spectrum , nanotechnology , chemical engineering , photochemistry , optoelectronics , composite material , organic chemistry , chemistry , engineering
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.