4.8 Review

Single-atom catalysts for photocatalytic energy conversion

Journal

JOULE
Volume 6, Issue 1, Pages 92-133

Publisher

CELL PRESS
DOI: 10.1016/j.joule.2021.12.011

Keywords

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Funding

  1. King Abdullah University of Science and Technology (KAUST)
  2. Ministry of Education of Singapore via the Academic Research Fund (AcRF) Tier-2 grant [MOE2019-T2-2-049]

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Artificial photocatalytic energy conversion is an intriguing strategy for solving the energy crisis and environmental problems, and single-atom catalysts have emerged as promising candidates for this purpose. This review presents the recent progress and challenges of single-atom catalysts in photocatalytic energy conversion systems, and explores the fundamental principles and applications of single-atom photocatalysis.
Artificial photocatalytic energy conversion represents a highly intriguing strategy for solving the energy crisis and environmental problems by directly harvesting solar energy. The development of efficient photocatalysts is the central task for pushing the real-world application of photocatalytic reactions. Due to the maximum atomic utilization efficiency and distinct advantages of outstanding catalytic activity, single-atom catalysts (SACs) have emerged as promising candidates for photocatalysts. In the current review, recent progresses and challenges on SACs for photocatalytic energy conversion systems are presented. Fundamental principles focusing on charge separation/transfer and molecular adsorption/activation for the single-atom photocatalysis are systemically explored. We outline how the isolated reactive sites facilitate the photogenerated electron-hole transfer and promote the construction of efficient photoactivation cycles. The widespread adoption of SACs in diverse photocatalytic reactions is also comprehensively introduced. By presenting these advances and addressing some future challenges with potential solutions related to the integral development of photocatalysis over SACs, we expect to shed some light on the forthcoming research of SACs for photocatalytic energy conversion.

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