期刊
CHEMICAL ENGINEERING JOURNAL
卷 428, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.131085
关键词
PtRu alloy nanoparticles; Hydrogen evolution reaction; Electrocatalysis
资金
- National Natural Science Foundation of China [51772156, 51872144]
- Natural Science Foundation of Jiangsu Province [BK20180019]
- Opening Project of the Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials [JSKC20021]
- PAPD of Jiangsu
- Collaborative Inno-vation Center for Advanced Micro/nanomaterials and Equipment
By designing PtRu alloy nanoparticles supported on nanosheets, PtRu@C2N exhibits high activity and fast kinetics, outperforming commercial Pt/C in both acidic and alkaline conditions, showing great potential for practical applications.
Designing a highly efficient and low-cost electrocatalyst for hydrogen evolution reaction (HER) is of great importance to produce high-purity hydrogen, yet it still remains a huge challenge. Here, we present a facile synthesis of this electrocatalyst, PtRu alloy nanoparticles supported on C2N nanosheets, using a condensationreduction approach. The PtRu@C2N exhibits comparable performance than the commercial Pt/C and higher efficiency than monometallic Pt@C2N and Ru@C2N in both acidic and alkaline conditions. The highly enhanced activity and fast kinetics of PtRu@C2N were attributed to the large electrochemical active surface area, unique electronic structure of PtRu nanoparticles on C2N nanosheets. Density functional theory calculations show that the alloy effect and the metal-support interaction in PtRu@C2N catalyst optimizes the adsorption energy of H atom and other intermediates, resulting in the improvement of HER activity.
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