Ligang Wang, Jialu Li, Shufang Ji, Yuli Xiong, Dingsheng Wang
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引用次数: 0
Abstract
Atomically dispersed catalysts with nearly 100% metal utilization have attracted widespread interest in heterogeneous catalysis, energy storage and conversion. Considering the strong metal-support interactions (SMSI), the support plays a vital role in precise regulating local microenvironment of atomically dispersed metal sites at atomic-level, which significantly affects the catalytic activity and selectivity of catalysts. Recently, covalent organic frameworks (COFs) have been emerged as suitable support platforms to anchor single-atom catalysts (SACs) and dual-atom catalysts (DACs), owing to high porosity, pre-design capability, and tunable structures. In this review, we first classified the types of SA/DA sites in COF based on the numbers and coordination structures of catalytic centers. The microenvironment engineering of mainly involving metal center-ligand in the first coordination shell, the symmetry of coordinating atoms, local electronic structure modulation and site distance effect were unravelled for COFs based single/dual-atom active sites. Then, we systematically summarized the design principles, synthetic strategies and advanced characterization techniques of state-of-the-art COF-based SACs/DACs. Furthermore, the COF-based SACs/DACs for applications in energy conversion (electrocatalysis and photocatalysis) and storage (lithium, sodium and potassium-ion batteries) were comprehensively and in-depth highlighted, focusing on revealing the relationship of structure-performance. Finally, the future challenges and prospective insights into COF-based-SACs/DACs were delineated.
期刊介绍:
Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences."
Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).