In Situ-Prepared Nickel Oxide Electrodes for Electrochemical Detection of Nitrite via Catalytic Reduction Mechanism.

Yihao Geng, Huicong Zhou, Siyuan Lu, Guanyue Wang, Xing Zhao, Hui Suo, Chun Zhao

Abstract read

In one paragraph

Article in Sensors (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

7 authors.

Yihao GengState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Huicong ZhouState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Siyuan LuState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Guanyue WangState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Xing ZhaoState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Hui SuoState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Chun ZhaoState Key Laboratory of Integrated Optoelectronics, JLU Region College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Funding

Jilin Province Science and Technology Department 20260203107SF

6 · The paper itself

Abstract

In electrochemical nitrite detection, the strong oxidizing nature of nitrite often leads to high detection potentials, posing a significant challenge. To address this issue, this study successfully fabricated a nickel oxide/carbon cloth (NiO/CC) electrode using a one-step electrodeposition method followed by calcination. Taking advantage of the excellent electrocatalytic reduction properties of nickel oxide-particularly the surface oxygen vacancies that serve as active sites for efficient nitrite ion adsorption and promote the hydrogenation of the key intermediate (*NO)-the reaction energy barrier is substantially reduced. As a result, the NiO/CC electrode enables high-sensitivity nitrite detection at a low potential. Electrochemical evaluations reveal that the NiO/CC sensor performs excellently at -0.15 V (vs. Hg/HgO), featuring a linear detection range of 10-500 μM, a low detection limit of 0.091 μM (S/N = 3), and a high sensitivity of 2910 μA·mM

Indexed as

electrochemical detectionlow reduction potentialNiO nanoflowersnitrite

Identifiers

PMID42197746

DOI10.3390/s26102932

PMCPMC13210599

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