期刊
NANO LETTERS
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.2c00042
关键词
KEYWORDS; atomically dispersed catalysts; metal; organic frameworks; mild temperature; general strategy; hydrogen evolution
类别
资金
- National Key Research and Development Program of China [2019YFC1604601, 2019YFC1604600, 2017YFA0206901, 2017YFA0206900, 2018YFC1602301]
- National Natural Science Foundation of China [21705027, 21974029]
- Natural Science Foundation of Shanghai [18ZR1404700]
- Construction project of Shanghai Key Laboratory of Molecular Imaging [18DZ2260400]
- Shanghai Municipal Education Commission (Class II Plateau Disciplinary Construction Program of Medical Technology of SUMHS)
This study presents a new method for the large-scale synthesis of atomically dispersed catalysts under mild conditions. By utilizing the precise capture via narrow pores and stable bonding of vacancies, the synthesis process of catalysts is simplified, and high electrocatalytic activity and long-term stability are achieved.
Atomically dispersed catalysts are a new type of material in the field of catalysis science, yet their large-scale synthesis under mild conditions remains challenging. Here, a general synergistic capture-bonding superassembly strategy to obtain atomically dispersed Pt (Ru, Au, Pd, Ir, and Rh)-based catalysts on micropore-vacancy frameworks at a mild temperature of 60 degrees C is reported. The precise capture via narrow pores and the stable bonding of vacancies not only simplify the synthesis process of atomically dispersed catalysts but also realize their large-scale preparation at mild temperature. The prepared atomically dispersed Pt-based catalyst possesses a promising electrocatalytic activity for hydrogen evolution, showing an activity (at overpotential of 50 mV) about 21.4 and 20.8 times higher than that of commercial Pt/C catalyst in 1.0 M KOH and 0.5 M H2SO4, respectively. Besides, the extremely long operational stability of more than 100 h provides more potential for its practical application.
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