层状双氢氧化物结构及其在促进光催化制氢中的作用的最新进展：综合综述,International Journal of Energy Research

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层状双氢氧化物结构及其在促进光催化制氢中的作用的最新进展：综合综述
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2021-10-05 , DOI: 10.1002/er.7335
Areen Sherryna ₁ , Muhammad Tahir _{1,

2}

Affiliation

层状双氢氧化物 (LDH) 因其独特的二维 (2D) 结构、带隙可调谐性和成分灵活性而受到科学界的关注，从而可以轻松地将金属物质掺入其层状结构中。本综述的主要目的是通过关注二价和三价金属掺入的作用及其效率提高来探索基于 LDH 的光催化剂用于光催化制氢的当前进展。首先，阐明了光催化的机理及其热力学，以获得基本的理解和基础。其次，简要介绍了 LDH 光催化剂的概述，特别关注阳离子掺入对光学性质的影响以及对电子密度的计算研究。此外，还简要讨论了 LDH 的热稳定性，重点关注温度对转化为混合金属氧化物 (MMO) 的影响。接下来，系统地讨论了基于二价和三价阳离子元素的LDH分类及其在LDH水镁石层中的作用。对广泛研究的金属（如 Mg、Ni、Zn、Co、Cr、Fe、V 和 Al）的机械性能给予了关注，并证明了通过各种工程方面的效率提高。阐明了对LDH有效设计的概述总结，为提高其光催化性能提供了深刻的理解。最后，讨论了未来的观点和建议，以提供对 LDH 潜力的新见解，并使它们在太阳能应用中占有一席之地。

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Recent developments in layered double hydroxide structures with their role in promoting photocatalytic hydrogen production: A comprehensive review

Layered double hydroxides (LDHs) have received scientific attractions due to their unique two-dimensional (2D) structure, band gap tunability, and compositional flexibility, leading to the facile incorporation of the metal species into their layered structure. The main objective of this review is to explore the current advancement of LDH-based photocatalysts for photocatalytic hydrogen production by focusing on the role of divalent and trivalent metal incorporations and their efficiency enhancement. Firstly, the mechanism of photocatalysis and its thermodynamics has been explicated to gain basic understanding and fundamentals. Secondly, a brief introduction to the overview of LDH photocatalysts with special attention to the effects of cationic incorporations on the optical properties and computational study towards the electronic density has been demonstrated. Besides, the thermal stability of LDH is briefly discussed, focusing on the effects of temperature towards the conversion into mixed-metal oxide (MMO). Next, the classification of LDH based on divalent and trivalent cationic elements and their role in the brucite layer of LDH are systematically discussed. Attention is given to the mechanistic properties of the extensively studied metals, such as Mg, Ni, Zn, Co, Cr, Fe, V and Al, with the efficiency enhancements through various engineering aspects are demonstrated. The overview summary on the efficient design of LDH is elucidated to provide a deep understanding for improving their photocatalytic properties. Lastly, the future perspectives and recommendations are discussed to provide new insight into the potential of LDH and render them a notable place in solar energy applications.

更新日期：2021-10-05

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