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Wensheng Gao, Kefeng Xie, Jin Xie, Xiaomei Wang, Hong Zhang, Shengqi Chen, Hao Wang, Zelong Li, Can Li
Involving eight electron transfer process and multiple intermediates of nitrate (NO 3 − ) reduction reaction leads to a sluggish kinetic and low Faradaic efficiency, therefore, it is essential to get an insight into the reaction mechanism to develop highly efficient electrocatalyst. Herein, a series of reduced‐graphene‐oxide‐supported RuCu alloy catalysts (Ru x Cu x /rGO) are fabricated and used for the direct reduction of NO 3 − to NH 3 . It is found that the Ru 1 Cu 10 /rGO shows the ammonia formation rate of 0.38 mmol cm −2 h −1 (loading 1 mg cm −2 ) and the ammonia Faradaic efficiency of 98% under an ultralow potential of −0.05 V versus Reversible Hydrogen Electode (RHE), which is comparable to Ru catalyst. The highly efficient activity of Ru 1 Cu 10 /rGO can be attributed to the synergetic effect between Ru and Cu sites via a relay catalysis, in which the Cu shows the exclusively efficient activity for the reduction of NO 3 − to NO 2 − and Ru exhibits the superior activity for NO 2 − to NH 3 . In addition, the doping of Ru into Cu tunes the d‐band center of alloy and effectively modulates the adsorption energy of the NO 3 − and NO 2 − , which promotes the direct reduction of NO 3 − to NH 3 . This synergetic electrocatalysis strategy opens a new avenue for developing highly efficient multifunctional catalysts.
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Gao, W., Xie, K., Xie, J., Wang, X., Zhang, H., Chen, S., Wang, H., Li, Z., & Li, C. (2023). Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia. Advanced Materials, 35(19), e2202952. https://doi.org/10.1002/adma.202202952
Gao, Wensheng, et al. "Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia." Advanced Materials, vol. 35, no. 19, 2023, pp. e2202952, https://doi.org/10.1002/adma.202202952.
Gao, Wensheng, Kefeng Xie, Jin Xie, Xiaomei Wang, Hong Zhang, Shengqi Chen, Hao Wang, Zelong Li, and Can Li. "Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia." Advanced Materials 35, no. 19 (2023): e2202952. https://doi.org/10.1002/adma.202202952.
Gao W., Xie K., Xie J. [и др.] Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia // Advanced Materials. — 2023. — Vol. 35, № 19. — P. e2202952. — URL: https://doi.org/10.1002/adma.202202952
@article{gao2023alloying,
title = {{Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia}},
author = {Wensheng Gao and Kefeng Xie and Jin Xie and Xiaomei Wang and Hong Zhang and Shengqi Chen and Hao Wang and Zelong Li and Can Li},
journal = {Advanced Materials},
year = {2023},
volume = {35},
number = {19},
pages = {e2202952},
doi = {10.1002/adma.202202952},
url = {https://doi.org/10.1002/adma.202202952}
}TY - JOUR AU - Gao, Wensheng AU - Xie, Kefeng AU - Xie, Jin AU - Wang, Xiaomei AU - Zhang, Hong AU - Chen, Shengqi AU - Wang, Hao AU - Li, Zelong AU - Li, Can TI - Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia JO - Advanced Materials VL - 35 IS - 19 SP - e2202952 PY - 2023 DA - 2023/03/05 DO - 10.1002/adma.202202952 UR - https://doi.org/10.1002/adma.202202952 ER -
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