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In this study, a self\u2010supporting \u201cnanosheet on nanosheet\u201d arrays electrocatalyst with core\u2010shell heterostructure was prepared in\u2005situ by coupling NiCo layer double hydroxide with 2D ZIF derived Co\u2010nitrogen\u2010doped porous carbon on carbon cloth (Co\u2212N\/C@NiCo\u2010LDH NSAs\/CC). Co\u2212N\/C nanosheet arrays act as a scaffold core with good electrical conductivity, providing more NiCo\u2010LDH nucleation sites to avoid NiCo\u2010LDH agglomeration, thus having fast mass\/charge transfer performance. While the NiCo\u2010LDH nanosheet arrays shell with high specific surface area provide more active sites for electrochemical reactions. As an electrocatalytic sensing electrode, Co\u2212N\/C@NiCo\u2010LDH NSAs\/CC has a wide linear range of 1\u2005\u03bcM to 13\u2005mM for formaldehyde detection, and the detection limit is 82\u2005nM. Besides, the sensor has been applied to the detection of formaldehyde in food samples with satisfactory results.<\/jats:p>","DOI":"10.1002\/chem.202304024","type":"journal-article","created":{"date-parts":[[2024,2,23]],"date-time":"2024-02-23T09:59:13Z","timestamp":1708682353000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["NiCo\u2010LDH coupled with 2D ZIF\u2010derived Co nitrogen doped carbon nanosheet arrays as a self\u2010supporting electrocatalyst for detection of formaldehyde"],"prefix":"10.1002","volume":"30","author":[{"given":"Chengshuang","family":"Ling","sequence":"first","affiliation":[{"name":"Key Laboratory of Land Resources Evaluation and Monitoring in Southwest Ministry of Education Sichuan Normal University  Chengdu 610068 China"},{"name":"College of Chemistry and Materials Science Sichuan Normal University  Chengdu 610068 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