Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China.
Key Lab of Process Analysis and Control of Sichuan Universities, Yibin University, 644000, Sichuan, China.
Food Chem. 2024 Dec 15;461:140940. doi: 10.1016/j.foodchem.2024.140940. Epub 2024 Aug 21.
The accumulation of small doses of hydrogen peroxide (HO) into food can cause many diseases in the human body, and it is urgent to develop efficient detection methods of HO. Herein, the hierarchical structure composite of NiCo-LDH nanosheets crosslinked NiMoO nanorods was grown in situ on carbon cloth (NiMoO NRs@NiCo-LDH NSs/CC) by micro-plasma assisted hydrothermal method. Thanks to the synergistic effect of three metals and (NiMoO NRs@NiCo-LDH NSs/CC) provided by nanorods/nanosheets hierarchical structure, NiMoO NRs@NiCo-LDH NSs/CC exposes more active sites and achieves rapid electron transfer. The HO electrochemical sensor was constructed as the working electrode with a linear range of 1 μmol L to 9.0 mmol L and detection limit of 112 nmol L. In addition, the sensor has been successfully applied to the detection of HO in food samples, the recovery rate is 95.2%-106.62%, RSD < 4.89%.
过氧化氢（HO）在食物中的小剂量积累会导致人体许多疾病，因此迫切需要开发有效的 HO 检测方法。在此，通过微等离子体辅助水热法原位生长在碳布上的 NiCo-LDH 纳米片交联的 NiMoO 纳米棒的分层结构复合材料（NiMoO NRs@NiCo-LDH NSs/CC）。得益于三种金属的协同作用和纳米棒/纳米片分层结构提供的（NiMoO NRs@NiCo-LDH NSs/CC），NiMoO NRs@NiCo-LDH NSs/CC 暴露了更多的活性位点并实现了快速的电子转移。HO 电化学传感器作为工作电极构建，线性范围为 1 μmol L 至 9.0 mmol L，检测限为 112 nmol L。此外，该传感器已成功应用于食品样品中 HO 的检测，回收率为 95.2%-106.62%，RSD<4.89%。
