基于共价金属-有机框架的环三核单元金回收研究

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2025-04-29 DOI:10.1002/anie.202502749

Jie Luo, Jia-Tong Lin, Xiao Luo, Na Yin, Mo Xie, Xu Chen, Ying-Qiang Li, Yang-Guang Li, Guo-Hong Ning, Dan Li

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引用次数: 0

摘要

从经济和环境的角度来看，开发用于金回收的多孔固体是非常需要的，但是设计具有高综合性能的固体吸附剂仍然具有挑战性。在此，我们设计了三个铜(I)环三核单元，Cu(I) - ctu，基于共价金属-有机框架（CMOFs），通过动态共价键连接金属簇。这些CMOFs提供了3687 mg g - 1的高吸附量，超快的吸附动力学(即去除效率>；在20秒内99%)，出色的选择性和可重用性。此外，它可以很容易地用于从电子废物中提取金。由于Cu‐ctu具有丰富的氧化还原性质，这些CMOFs表现出吸附、化学还原和光催化还原三种吸附机制。有趣的是，负载金的CMOFs可以作为催化剂，以高收率（例如，6个例子高达95%）将炔水化成酮。

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Cyclic Trinuclear Units Based Covalent Metal‐Organic Frameworks for Gold Recovery

The development of porous solids for gold recovery is highly desired from both an economical and environmental point of view, however the design of solid adsorbents with high overall performance is still challenging. Herein, we designed three copper(I) cyclic trinuclear units, Cu(I)‐CTUs, based covalent metal‐organic frameworks (CMOFs) by networking metal clusters with dynamic covalent linkages. These CMOFs deliver a high gold adsorption capacity of 3687 mg g−1, ultra‐fast adsorption kinetics (i.e., removal efficiency > 99% within 20s), excellent selectivity and reusability. In addition, it can be readily used for gold extraction from e‐waste. Owing to the rich redox properties of Cu‐CTUs, these CMOFs show three sorption mechanisms including adsorption, chemical reduction and photocatalytic reduction. Interestingly, the gold‐loaded CMOFs can be used as catalysts for hydration of alkynes to ketones with high yields (e.g., up to ~ 95% for 6 examples).

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来源期刊

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.