1. Electrochemical reduction of nitrate to hydroxylamine on gold electrode.
- Author
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Xie, Yangshan, De Ras, Michiel, Zhao, Jiwu, Liu, Tianxi, Lai, Feili, Hofkens, Johan, and Roeffaers, Maarten B. J.
- Subjects
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DENITRIFICATION , *GOLD electrodes , *HYDROXYLAMINE , *GOLD , *NITRATES - Abstract
In this study, we explore the efficacy of gold (Au) as a selective electrocatalyst for the reduction of nitrate to hydroxylamine, a valuable nitrogen-based chemical, while also evaluating the by-product formation of ammonia. We systematically optimized various experimental parameters including nitrate concentration, pH, and applied potential. We found that at an applied potential of −0.7 V vs. RHE in 0.1 M HNO3, Au achieves a 230.1 ± 19 μmol NH2OH h−1 cm−2 yield, with a 34.2 ± 2.8% faradaic efficiency. This study underscores the potential of Au as an efficient and selective electrocatalyst for generating value-added nitrogen products through an electrochemical pathway. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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