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Zhimin Song, Yan Liu, Yongzhi Zhong, Qing Guo, Jie Zeng, Zhigang Geng
The electroreduction of nitrate (NO 3 − ) pollutants to ammonia (NH 3 ) offers an alternative approach for both wastewater treatment and NH 3 synthesis. Numerous electrocatalysts have been reported for the electroreduction of NO 3 − to NH 3 , but most of them demonstrate poor performance at ultralow NO 3 − concentrations. In this study, a Cu‐based catalyst for electroreduction of NO 3 − at ultralow concentrations is developed by encapsulating Cu nanoparticles in a porous carbon framework (Cu@C). At −0.3 V vs reversible hydrogen electrode (RHE), Cu@C achieves Faradaic efficiency for NH 3 of 72.0% with 1 × 10 −3 m NO 3 − , which is 3.6 times higher than that of Cu nanoparticles. Notably, at −0.9 V vs RHE, the yield rate of NH 3 for Cu@C is 469.5 µg h −1 cm −2 , which is the highest value reported for electrocatalysts with 1 × 10 −3 m NO 3 − . An investigation of the mechanism reveals that NO 3 − can be concentrated owing to the enrichment effect of the porous carbon framework in Cu@C, thereby facilitating the mass transfer of NO 3 − for efficient electroreduction into NH 3 at ultralow concentrations.
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Song, Z., Liu, Y., Zhong, Y., Guo, Q., Zeng, J., & Geng, Z. (2022). Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect. Advanced Materials, 34(36), e2204306. https://doi.org/10.1002/adma.202204306
Song, Zhimin, et al. "Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect." Advanced Materials, vol. 34, no. 36, 2022, pp. e2204306, https://doi.org/10.1002/adma.202204306.
Song, Zhimin, Yan Liu, Yongzhi Zhong, Qing Guo, Jie Zeng, and Zhigang Geng. "Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect." Advanced Materials 34, no. 36 (2022): e2204306. https://doi.org/10.1002/adma.202204306.
Song Z., Liu Y., Zhong Y. [и др.] Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect // Advanced Materials. — 2022. — Vol. 34, № 36. — P. e2204306. — URL: https://doi.org/10.1002/adma.202204306
@article{song2022efficient,
title = {{Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect}},
author = {Zhimin Song and Yan Liu and Yongzhi Zhong and Qing Guo and Jie Zeng and Zhigang Geng},
journal = {Advanced Materials},
year = {2022},
volume = {34},
number = {36},
pages = {e2204306},
doi = {10.1002/adma.202204306},
url = {https://doi.org/10.1002/adma.202204306}
}TY - JOUR AU - Song, Zhimin AU - Liu, Yan AU - Zhong, Yongzhi AU - Guo, Qing AU - Zeng, Jie AU - Geng, Zhigang TI - Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect JO - Advanced Materials VL - 34 IS - 36 SP - e2204306 PY - 2022 DA - 2022/07/15 DO - 10.1002/adma.202204306 UR - https://doi.org/10.1002/adma.202204306 ER -
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