材料科学
纳米孔
催化作用
Atom(片上系统)
猝灭(荧光)
纳米技术
化学工程
有机化学
化学
计算机科学
光学
物理
工程类
荧光
嵌入式系统
作者
Kang Jiang,Zhixiao Liu,Ying‐Rui Lu,Mengjia Wang,Dechao Chen,Lebin Cai,Ting‐Shan Chan,Pan Liu,Anlian Pan,Yongwen Tan
标识
DOI:10.1002/adma.202207850
摘要
Single-atom catalysts have attracted extensive attention due to their unique atomic structures and extraordinary activities in catalyzing chemical reactions. However, the lack of general and efficient approaches for producing high-density single atoms on suitably tailored supporting matrixes hinders their industrial applications. Here, a rapid melt-quenching strategy with high throughput to synthesize single atoms with high metal-atom loadings of up to 9.7 wt% or 2.6 at% on nanoporous metal compounds is reported, representing several-fold improvements compared to benchmarks in the literature. Mechanism characterizations reveal that the high-temperature melting provides the essential liquid environment and activation energy to achieve the atomization of metals, while the following rapid-quenching pins the isolated metal atoms and stabilizes the coordination environment. In comparison with carbon-supported single-atom catalysts, various collaboration combinations of single atoms and nanoporous metal compounds can be synthesized using the strategy, thus achieving efficient hydrazine oxidation-assisted H2 production. This synthesis protocol is highly compatible with automatic operation, which provides a feasible and general route to design and manufacture specific single-atom catalysts with tunable atomic metal components and supporting matrixes, thus promoting the deployment of single-atom catalysts for various energy technology applications.
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