Next Article in Journal
Electrofluorochromic Switching of Heat-Induced Cross-Linkable Multi-Styryl-Terminated Triphenylamine and Tetraphenylethylene Derivatives
Next Article in Special Issue
Efficient Transformation of Water Vapor into Hydrogen by Dielectric Barrier Discharge Loaded with Bamboo Carbon Bed Structured by Fibrous Material
Previous Article in Journal
Sugar-Based Surfactants: Effects of Structural Features on the Physicochemical Properties of Sugar Esters and Their Comparison to Commercial Octyl Glycosides
Previous Article in Special Issue
Stabilizing Highly Active Ru Sites by Electron Reservoir in Acidic Oxygen Evolution
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Molecules
Volume 29
Issue 10
10.3390/molecules29102339
molecules-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

The Enhanced Performance of NiCuOOH/NiCu(OH)2 Electrode Using Pre-Conversion Treatment for the Electrochemical Oxidation of Ammonia

by
Xuejiao Yin
1,*,
Jiaxin Wen
1,
Jujiao Zhao
2,
Ran An
2,
Ruolan Zhang
2,
Yin Xiong
3,
Yanzong Tao
3,
Lingxin Wang
4,
Yuhang Liu
4,
Huanyu Zhou
5 and
Yuanyuan Huang
6,7,*
1
School of Architecture and Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China
2
College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
3
Chongqing Baihan Wastewater Treatment Co., Ltd., Chongqing 400000, China
4
School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, China
5
Green Intelligence Environmental School, Yangtze Normal University, Chongqing 408100, China
6
Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China
7
Chongqing Academy of Science and Technology, Chongqing 401120, China
*
Authors to whom correspondence should be addressed.
Molecules 2024, 29(10), 2339; https://doi.org/10.3390/molecules29102339
Submission received: 1 April 2024 / Revised: 9 May 2024 / Accepted: 13 May 2024 / Published: 16 May 2024
(This article belongs to the Special Issue Advances in Water Electrolysis Technology)
Browse Figures
Versions Notes

Abstract

Electrochemical oxidation of ammonia is an attractive process for wastewater treatment, hydrogen production, and ammonia fuel cells. However, the sluggish kinetics of the anode reaction has limited its applications, leading to a high demand for novel electrocatalysts. Herein, the electrode with the in situ growth of NiCu(OH)2 was partially transformed into the NiCuOOH phase by a pre-treatment using highly oxidative solutions. As revealed by SEM, XPS, and electrochemical analysis, such a strategy maintained the 3D structure, while inducing more active sites before the in situ generation of oxyhydroxide sites during the electrochemical reaction. The optimized NiCuOOH-1 sample exhibited the current density of 6.06 mA cm−2 at 0.5 V, which is 1.67 times higher than that of NiCu(OH)2 (3.63 mA cm−2). Moreover, the sample with a higher crystalline degree of the NiCuOOH phase exhibited lower performance, demonstrating the importance of a moderate treatment condition. In addition, the NiCuOOH-1 sample presented low selectivity (<20%) towards NO2− and stable activity during the long-term operation. The findings of this study would provide valuable insights into the development of transition metal electrocatalysts for ammonia oxidation.
Keywords: electrochemical oxidation of ammonia; nickel–copper oxyhydroxide; wastewater treatment; hydrogen production electrochemical oxidation of ammonia; nickel–copper oxyhydroxide; wastewater treatment; hydrogen production

Share and Cite

MDPI and ACS Style

Yin, X.; Wen, J.; Zhao, J.; An, R.; Zhang, R.; Xiong, Y.; Tao, Y.; Wang, L.; Liu, Y.; Zhou, H.; et al. The Enhanced Performance of NiCuOOH/NiCu(OH)2 Electrode Using Pre-Conversion Treatment for the Electrochemical Oxidation of Ammonia. Molecules 2024, 29, 2339. https://doi.org/10.3390/molecules29102339

AMA Style

Yin X, Wen J, Zhao J, An R, Zhang R, Xiong Y, Tao Y, Wang L, Liu Y, Zhou H, et al. The Enhanced Performance of NiCuOOH/NiCu(OH)2 Electrode Using Pre-Conversion Treatment for the Electrochemical Oxidation of Ammonia. Molecules. 2024; 29(10):2339. https://doi.org/10.3390/molecules29102339

Chicago/Turabian Style

Yin, Xuejiao, Jiaxin Wen, Jujiao Zhao, Ran An, Ruolan Zhang, Yin Xiong, Yanzong Tao, Lingxin Wang, Yuhang Liu, Huanyu Zhou, and et al. 2024. "The Enhanced Performance of NiCuOOH/NiCu(OH)2 Electrode Using Pre-Conversion Treatment for the Electrochemical Oxidation of Ammonia" Molecules 29, no. 10: 2339. https://doi.org/10.3390/molecules29102339

APA Style

Yin, X., Wen, J., Zhao, J., An, R., Zhang, R., Xiong, Y., Tao, Y., Wang, L., Liu, Y., Zhou, H., & Huang, Y. (2024). The Enhanced Performance of NiCuOOH/NiCu(OH)2 Electrode Using Pre-Conversion Treatment for the Electrochemical Oxidation of Ammonia. Molecules, 29(10), 2339. https://doi.org/10.3390/molecules29102339

Article Metrics

Back to TopTop