MXenes and their derivatives as nitrogen reduction reaction catalysts: recent progress and perspectives
MXenes and their derivatives as nitrogen reduction reaction catalysts: recent progress and perspectives
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DOI：
10.1016/j.mtener.2021.100864
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发表时间：
2021-10-21
影响因子：
9.3
通讯作者：
Yin, Shu
中科院分区：
文献类型：
--
作者：
Amrillah, Tahta;Hermawan, Angga;Yin, Shu
MXenes已成为研究最活跃的新兴材料之一。由于其独特的层状结构、高比表面积、丰富的活性中心和良好的化学稳定性，它们在化学转化和环境净化方面具有很好的应用前景。最近的突破性进展展示了MXenes及其衍生物通过电催化和光催化氮还原反应(NRR)吸附、活化氮(N-2)并将其转化为氨(NH3)。NRR被认为是一种绿色环保的NH3合成技术，它在温和的条件下利用N-2和水分子，而不像目前的Haber-Bosch技术直接使用化石和密集的能源过程。然而，使用MXene基催化剂的NRR的NH3产率和效率仍然很低，不能满足实际应用。因此，在今后的发展中，应从根本上理解净减排机制及其面临的重大挑战。本文综述了MXenes作为NRR催化剂的理论研究，并讨论了MXenes及其衍生物在NRR中的最新进展及其强化策略。还介绍了获得可调形态的MXenes、基于纳米复合材料的MXenes和MXenes衍生物的合成方案。此外，本综述将为实现清洁和可持续的NH3生产的未来研究提供新的视角。(C)2021年爱思唯尔有限公司。保留所有权利。
MXenes have become one of the most actively studied emerging materials. They hold a great promise as efficient catalysts for chemical conversion and environmental purification, due to their unique layered structures, high specific surface areas, abundant active sites, and excellent chemical stability. Recent breakthroughs demonstrate MXenes and their derivatives in adsorbing, activating, and converting nitrogen (N-2) to ammonia (NH3) via electrocatalytic and photocatalytic nitrogen reduction reaction (NRR). The NRR is considered a green and environmentally friendly NH3 synthesis utilizing N-2 and water molecules under mild conditions, unlike the current-day Haber-Bosch technology that directly uses fossil with intensive energy processes. However, the NH3 yield and efficiency of NRR using MXene-based catalysts remain too low to meet practical applications. Therefore, a fundamental understanding of NRR mechanisms and their significant challenges should be addressed for future development. In this review, we summarize a theoretical investigation of the promising properties of MXenes as NRR catalysts and discuss the recent development of MXenes and their derivatives in NRR and their enhancement strategies. The synthesis protocols to obtain tunable morphology, nanocomposite-based, and derivatives of MXenes are also presented. Furthermore, this review will provide new perspectives on future research to realize clean and sustainable NH3 production. (C) 2021 Elsevier Ltd. All rights reserved.