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A Noble‐Metal‐Free CdS/Ni 3 S 2 @C Nanocomposite for Efficient Visible‐Light‐Driven Photocatalysis
Author(s) -
Cui Yu,
Pan YunXiang,
Qin Haili,
Cong HuaiPing,
Yu ShuHong
Publication year - 2018
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.201800029
Subject(s) - photocatalysis , noble metal , visible spectrum , materials science , nanocomposite , hydrogen production , water splitting , absorbance , metal , carbon fibers , chemical engineering , photochemistry , nanotechnology , hydrogen , catalysis , optoelectronics , chemistry , composite material , composite number , metallurgy , organic chemistry , engineering , chromatography
Searching for highly efficient noble‐metal‐free visible‐light‐driven photocatalysts for hydrogen evolution has attracted much attention. Herein, a facile method for synthesis of a noble‐metal‐free CdS/Ni 3 S 2 @C nanocomposite by dispersing CdS quantum dots (≤5 nm) on urchin‐like Ni 3 S 2 coated by a 5‐nm‐thick carbon layer is reported. It can be used for highly efficient visible‐light‐driven photocatalytic H 2 production from H 2 O. The H 2 production rate on CdS/Ni 3 S 2 @C (1164.7 µmol h −1 ) is about 3.5 times higher than that on the noble‐metal‐based CdS/Pt (325.2 µmol h −1 ). The CdS–carbon and carbon–Ni 3 S 2 interfaces are favorable for charge separation and the improved visible light absorbance could be the origin for the enhanced photocatalytic activity of CdS/Ni 3 S 2 @C. This work provides a model system for rationally designing efficient noble‐metal‐free photocatalysts for visible‐light‐driven photocatalysis.
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