Porous materials confining noble metals for the catalytic reduction of nitroaromatics: controllable synthesis and enhanced mechanism,Environmental Science: Nano

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Porous materials confining noble metals for the catalytic reduction of nitroaromatics: controllable synthesis and enhanced mechanism
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2021-10-11 , DOI: 10.1039/d1en00628b
Yixia Li _{1,

2} , Yukui Fu _{1,

2} , Cui Lai _{1,

2} , Lei Qin _{1,

2} , Bisheng Li _{1,

2} , Shiyu Liu _{1,

2} , Huan Yi _{1,

2} , Fuhang Xu _{1,

2} , Ling Li _{1,

2} , Mingming Zhang _{1,

2} , Mengyi Xu _{1,

2} , Chunyan Du ₃ , Wenjing Chen _{1,

2}

Affiliation

In the field of nanocatalysis, noble metal nanoparticles (NPs) have aroused tremendous attention owing to their superb catalytic efficiency, especially in the catalytic reduction of nitroaromatics. To overcome the disadvantages of noble metal-based catalysts, such as the leaching or aggregation of metal NPs, a wide variety of porous materials have been explored as confining units to improve their activity. By confining noble metal NPs in porous materials, unprecedentedly high catalytic activity, unique size selectivity, and enhanced recyclability can be realized in the catalytic reduction of hazardous nitroaromatic compounds. In this review, the advanced progress in strategies for the controlled synthesis of porous materials confining noble metals is elucidated. Then, the confinement effect mediated by the encapsulation of noble metals in the cavities of porous carbon, zeolites, metal–organic frameworks (MOFs), and porous organic polymers (POPs) is emphatically outlined. Furthermore, the size effect from NPs to sub-nanoscale species (single atom and metal clusters) in the confining environment is elaborated. We hope that this work will provide a fundamental understanding about the superiority of encapsulated catalysts over conventional supported catalysts and pave the way for the rational design of multifunctional porous materials confining noble metals for the more efficient reduction of nitroaromatic derivatives.

中文翻译：

用于催化还原硝基芳烃的贵金属多孔材料：可控合成和增强机制

在纳米催化领域，贵金属纳米颗粒（NPs）由于其优异的催化效率引起了极大的关注，尤其是在硝基芳烃的催化还原方面。为了克服贵金属基催化剂的缺点，例如金属纳米颗粒的浸出或聚集，已经探索了多种多孔材料作为限制单元以提高其活性。通过将贵金属纳米颗粒限制在多孔材料中，可以在危险硝基芳族化合物的催化还原中实现前所未有的高催化活性、独特的尺寸选择性和增强的可回收性。在这篇综述中，阐明了限制贵金属的多孔材料的受控合成策略的先进进展。然后，重点概述了贵金属封装在多孔碳、沸石、金属有机骨架 (MOF) 和多孔有机聚合物 (POP) 的空腔中所介导的限制效应。此外，详细阐述了限制环境中从 NPs 到亚纳米级物种（单原子和金属簇）的尺寸效应。我们希望这项工作能够从根本上理解包封催化剂相对于传统负载型催化剂的优越性，并为合理设计限制贵金属的多功能多孔材料以更有效地还原硝基芳烃衍生物铺平道路。详细阐述了限制环境中从 NPs 到亚纳米级物种（单原子和金属簇）的尺寸效应。我们希望这项工作能够从根本上理解包封催化剂相对于传统负载型催化剂的优越性，并为合理设计限制贵金属的多功能多孔材料以更有效地还原硝基芳烃衍生物铺平道路。详细阐述了限制环境中从 NPs 到亚纳米级物种（单原子和金属簇）的尺寸效应。我们希望这项工作能够从根本上理解包封催化剂相对于传统负载型催化剂的优越性，并为合理设计限制贵金属的多功能多孔材料以更有效地还原硝基芳烃衍生物铺平道路。

更新日期：2021-10-15

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