Low-crystallinity B-Co<sub>3</sub>O<sub>4</sub> Nano-particles for Electrocatalytic Nitrate to Ammonia

HE Jingting; QI Guisheng; YANG Kun; JI Caili; JIA Yusheng; GUO Yujin; ZHANG Rongrong; LI Ning; WANG Yaning; ZENG Zhongyu; FAN Xiaolong

doi:10.6054/j.jscnun.2024005

Journal of South China Normal University (Natural Science Edition) > 2024 > 56(1): 36-43. > DOI: 10.6054/j.jscnun.2024005

HE Jingting, QI Guisheng, YANG Kun, JI Caili, JIA Yusheng, GUO Yujin, ZHANG Rongrong, LI Ning, WANG Yaning, ZENG Zhongyu, FAN Xiaolong. Low-crystallinity B-Co₃O₄ Nano-particles for Electrocatalytic Nitrate to Ammonia[J]. Journal of South China Normal University (Natural Science Edition), 2024, 56(1): 36-43. DOI: 10.6054/j.jscnun.2024005

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Low-crystallinity B-Co₃O₄ Nano-particles for Electrocatalytic Nitrate to Ammonia

1.
Shanxi Province Key Laboratory of Chemical Process Intensification/School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China
2.
Department of Science, Taiyuan Institute of Technology, Taiyuan 030008, China

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Received Date: December 21, 2023
Available Online: April 29, 2024

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Abstract

Abstract

A simple precipitation calcination process was used to synthesize B-Co₃O₄ NPs and apply them as electrocatalytic reduction of nitrate by ammonia. Research has found that B-Co₃O₄ NPs have high electrocatalytic activity and when the voltage is -0.8(V vs. RHE). It attains an impressive NH₃ yield of 20 mg/(h ·cm²) and 94% (FE). In NaOH (1 mol/L) solution containing 0.1 mol/L NaNO₃. When the voltage is -0.6 V (vs. RHE), it corresponds to a NH₃ yield of 17.2 mg/(h ·cm²) and 95% FE. The excellent electrochemical performance of electrode material B-Co₃O₄ NPs is attributed to the effective inhibition of hydrogen evolution reaction by B—O in the electrocatalytic process. The low crystallinity and special porous structure of B-Co₃O₄ NPs effectively improve the adsorption and reduction activity of NO₃^-, promoting electron transfer and transfer.
- B-Co₃O₄ NPs,
- electrocatalysis,
- nitrate reduction,
- ammonia synthesis

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References (21)

References

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