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ZnIn2S4-Based Nanostructures in Artificial Photosynthesis: Insights into Photocatalytic Reduction toward Sustainable Energy Production

Journal

SMALL STRUCTURES
Volume 3, Issue 11, Pages -

Publisher

WILEY
DOI: 10.1002/sstr.202200017

Keywords

artificial photosynthesis; energy conversion; nanostructures; photocatalysis; ZnIn2S4

Funding

  1. Ministry of Higher Education (MOHE) Malaysia under the Fundamental Research Grant Scheme (FRGS) [FRGS/1/2020/TK0/XMU/02/1]
  2. Guangdong Basic and Applied Basic Research Foundation [2021A1515111019]
  3. Xiamen University Malaysia Investigatorship Grant [IENG/0038]
  4. Xiamen University Malaysia Research Fund [XMUMRF/2021-C8/IENG/0041, XMUMRF/2019-C3/IENG/0013]
  5. Hengyuan International Sdn. Bhd. [EENG/0003]

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Photocatalysis, as an attractive technology for addressing the energy crisis, has gained tremendous interest. Zinc indium sulfide (ZnIn2S4), a non-toxic and low-cost material, holds great potential for photocatalytic energy applications. However, its performance needs to be improved due to low charge-carrier transfer rate and ultrafast electron-hole recombination. This review summarizes the energy applications of ZnIn2S4-based nanocomposites and discusses various modification methods for enhancing their photocatalytic performance. The design strategies and important energy conversion applications are also highlighted.
As one of the most attractive technologies, photocatalysis arouses tremendous interest to directly harvest, convert, and store renewable solar energy for solving the energy crisis. Zinc indium sulfide (ZnIn2S4), a novel ternary metal chalcogenide, is highly desired owing to its non-toxicity, low cost, and easy fabrication. However, it still suffers from some problems, including low charge-carrier transfer rate and the ultrafast electron-hole recombination. Hence, various efficient modification methods are developed for enhancing the photocatalytic performance of ZnIn2S4 nanomaterials. Herein, the photocatalytic energy applications of ZnIn2S4-based nanocomposites are systematically summarized, followed by a thorough discussion on the synthesis methods of ZnIn2S4 micro/nanostructures. Furthermore, special attention is paid to various design strategies, including dimensionality tuning, element doping, vacancy control, cocatalyst loading, and heterojunction construction. Many important energy conversion applications are also addressed, such as photocatalytic water splitting, carbon dioxide reduction, and nitrogen fixation. The influence of physicochemical properties, including structure, optical, electronic, and adsorption, on the charge dynamics for boosted photocatalytic energy applications are concluded to unravel the property-application relationship. Through reviewing the significant state-of-the-art advances on this topic, the current challenges and the crucial issues of ZnIn2S4-based photocatalysts are prospected.

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