Single-Atom Photocatalysts for Emerging Reactions,ACS Central Science

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Single-Atom Photocatalysts for Emerging Reactions
ACS Central Science ( IF 12.7 ) Pub Date : 2021-01-12 , DOI: 10.1021/acscentsci.0c01466
Bingquan Xia ₁ , Yanzhao Zhang ₁ , Jingrun Ran ₁ , Mietek Jaroniec ₂ , Shi-Zhang Qiao ₁

Affiliation

Single-atom photocatalysts have demonstrated an enormous potential in producing value-added chemicals and/or fuels using sustainable and clean solar light to replace fossil fuels causing global energy and environmental issues. These photocatalysts not only exhibit outstanding activities, selectivity, and stabilities due to their distinct electronic structures and unsaturated coordination centers but also tremendously reduce the consumption of catalytic metals owing to the atomic dispersion of catalytic species. Besides, the single-atom active sites facilitate the elucidation of reaction mechanisms and understanding of the structure-performance relationships. Presently, apart from the well-known reactions (H₂ production, N₂ fixation, and CO₂ conversion), various novel reactions are successfully catalyzed by single-atom photocatalysts possessing high efficiency, selectivity, and stability. In this contribution, we summarize and discuss the design and fabrication of single-atom photocatalysts for three different kinds of emerging reactions (i.e., reduction reactions, oxidation reactions, as well as redox reactions) to generate desirable chemicals and/or fuels. The relationships between the composition/structure of single-atom photocatalysts and their activity/selectivity/stability are explained in detail. Additionally, the insightful reaction mechanisms of single-atom photocatalysts are also introduced. Finally, we propose the possible opportunities in this area for the design and fabrication of brand-new high-performance single-atom photocatalysts.

中文翻译：

用于新兴反应的单原子光催化剂

单原子光催化剂在利用可持续和清洁的太阳光生产增值化学品和/或燃料以替代引起全球能源和环境问题的化石燃料方面已表现出巨大的潜力。这些光催化剂不仅由于其独特的电子结构和不饱和配位中心而表现出出色的活性、选择性和稳定性，而且由于催化物质的原子分散而极大地减少了催化金属的消耗。此外，单原子活性位点有助于阐明反应机制和理解结构-性能关系。目前，除了众所周知的反应（H ₂生产、N ₂固定和CO ₂转化）之外，具有高效、选择性和稳定性的单原子光催化剂成功地催化了各种新颖的反应。在这篇文章中，我们总结并讨论了用于三种不同类型的新兴反应（即还原反应、氧化反应以及氧化还原反应）的单原子光催化剂的设计和制造，以产生所需的化学品和/或燃料。详细解释了单原子光催化剂的组成/结构与其活性/选择性/稳定性之间的关系。此外，还介绍了单原子光催化剂的深刻反应机制。最后，我们提出了该领域设计和制造全新高性能单原子光催化剂的可能机会。

更新日期：2021-01-27

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