The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia
Open accessAbstract
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 (RuxCux/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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Cites
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Metadata
- Authors
- Gao, W., Xie, K., Xie, J., Wang, X., Zhang, H., Chen, S., Wang, H., Li, Z., & Li, C.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2023-03-31
- Volume
- 35
- Issue
- 19
- Pages
- e2202952-e2202952
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W4323255425
- Cited by
- 532
- References
- 44
- FWCI
- 24.72
- Type
- journal article
- Language
- en
- Open access
- bronze
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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. https://doi.org/10.1002/adma.202202952
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