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Photoelectrochemical sensor for nitrite determination based on the etching of BiOCl/Zn0.5Cd0.5S.
Wang, Zaofen; Yang, Di; Tan, Yunzhu; Liu, Xu; Zhang, Xinyu; Wang, Zhenchao; Chen, Danping; Liu, Bingqian.
Afiliación
  • Wang Z; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Yang D; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Tan Y; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Liu X; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Zhang X; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Wang Z; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Chen D; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China.
  • Liu B; Engineering Laboratory of synthetic drug for Guizhou, School of Pharmacy, Guizhou University, Guiyang 550025, China. Electronic address: nqliu@gzu.edu.cn.
Food Chem ; 462: 140693, 2025 Jan 01.
Article en En | MEDLINE | ID: mdl-39208722
ABSTRACT
A rapid photoelectrochemical (PEC) sensor was constructed for nitrite detection in food based on the one-step chemical etching strategy of BiOCl/Zn0.5Cd0.5S (BOC/ZCS) nanocomposites by nitrite. BOC/ZCS heterojunction was prepared by a simple coprecipitation method, and it was found that BOC/ZCS showed significant photoelectrochemical (PEC) activity. The results of this study confirmed that the decrease in the photocurrent of the sensor was linked to the etching of ZCS by nitrite under acidic conditions. Under optimized conditions, the BOC/ZCS-based PEC sensor showed good analytical properties for detecting nitrite, with linear ranges of 1-100 µM and 100-600 µM. The detection limit of the sensor was 0.41 µM (S/N = 3). Excellent repeatability, reproducibility, low background noise, and immunity to interference were demonstrated using the proposed system, and satisfactory results were achieved for the nitrite assay using real samples. These results demonstrate a new method for nitrite detection developed using the proposed PEC sensor.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Técnicas Electroquímicas / Límite de Detección / Nitritos Idioma: En Revista: Food Chem Año: 2025 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Técnicas Electroquímicas / Límite de Detección / Nitritos Idioma: En Revista: Food Chem Año: 2025 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido