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Title: Metal–Organic Framework‐Derived ZnO/ZnS Heteronanostructures for Efficient Visible‐Light‐Driven Photocatalytic Hydrogen Production

Journal Article · · Advanced Science
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  1. College of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE) Nankai University Tianjin 300071 China
  2. College of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE) Nankai University Tianjin 300071 China, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China
  3. Department of Chemistry University of California Riverside CA 92521 USA
  4. College of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE) Nankai University Tianjin 300071 China, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China, State Key Laboratory of Elemento‐Organic Chemistry Nankai University Tianjin 300071 China

Abstract Developing highly active, recyclable, and inexpensive photocatalysts for hydrogen evolution reaction (HER) under visible light is significant for the direct conversion of solar energy into chemical fuels for various green energy applications. For such applications, it is very challenging but vitally important for a photocatalyst to simultaneously enhance the visible‐light absorption and suppress photogenerated electron–hole recombination, while also to maintain high stability and recyclability. Herein, a metal–organic framework (MOF)‐templated strategy has been developed to prepare heterostructured nanocatalysts with superior photocatalytic HER activity. Very uniquely, the synthesized photocatalytic materials can be recycled easily after use to restore the initial photocatalytic activity. It is shown that by controlling the calcination temperature and time with MOF‐5 as a host and guest thioacetamide as a sulfur source, the chemical compositions of the formed heterojunctions of ZnO/ZnS can be tuned to further enhance the visible‐light absorption and photocatalytic activity. The nanoscale heterojunction ZnO/ZnS structural feature serves to reduce the average free path of charge carriers and improve the charge separation efficiency, thus leading to significantly enhanced HER activity under visible‐light irradiation (λ > 420 nm) with high stability and recyclability without any cocatalyst.

Research Organization:
Univ. of California, Riverside, CA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
DE‐SC0010596; SC0010596
OSTI ID:
1415497
Alternate ID(s):
OSTI ID: 1415498; OSTI ID: 1499017
Journal Information:
Advanced Science, Journal Name: Advanced Science Vol. 5 Journal Issue: 4; ISSN 2198-3844
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 176 works
Citation information provided by
Web of Science

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Figures / Tables (6)