Laser Irradiation in Liquid to Release Cobalt Single-Atom Sites for Efficient Electrocatalytic N-2 Reduction
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Jiang, Quan
Shi, Tongfei
Sun, Qiao
Ye, Yixing
Lin, Yue
Zheng, Li Rong
Wang, Guozhong
Liang, Changhao
Zhang, Haimin
Zhao, Huijun
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Abstract
We synthesize Co single atoms anchored on N-doped carbon (Co-SAs/NC) by carbonizing a mixture of cobalt acetate, tartaric acid, and polyvinylpyrrolidone. The Co-SAs/NC exhibits nitrogen reduction reaction (NRR) activity, affording an NH3 yield rate of 9.7 μg h–1 mgcat.–1 with a Faradaic efficiency (FE) of 7.5% at −0.45 V (vs RHE) in 0.005 M H2SO4. After laser-irradiation treatment, the Co-SAs/NC indicates an enhanced NH3 yield rate (16.9 μg h–1 mgcat.–1) and FE (18.8%) at −0.25 V (vs RHE) in 0.005 M H2SO4. The improved NRR activity is due to more exposed Co-N3 sites on Co-SAs/NC after the laser-irradiation treatment.
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ACS Applied Energy Materials
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3
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7
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Classical physics
Science & Technology
Physical Sciences
Chemistry, Physical
Energy & Fuels
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Zhang, S; Jiang, Q; Shi, T; Sun, Q; Ye, Y; Lin, Y; Zheng, LR; Wang, G; Liang, C; Zhang, H; Zhao, H, Laser Irradiation in Liquid to Release Cobalt Single-Atom Sites for Efficient Electrocatalytic N-2 Reduction, ACS Applied Energy Materials, 2020, 3 (7), pp. 6079-6086