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Simultaneous electrochemical detection of dimethyl bisphenol A and bisphenol A using a novel Pt@SWCNTs-MXene-rGO modified screen-printed sensor.
Qu, Guangfei; Zhang, Yun; Zhou, Junhong; Tang, Huimin; Ji, Wei; Yan, Zhoupeng; Pan, Keheng; Ning, Ping.
Afiliación
  • Qu G; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Zhang Y; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Zhou J; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Tang H; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Ji W; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Yan Z; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Pan K; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
  • Ning P; Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China. Electronic address: ningpinglab@163.com.
Chemosphere ; 337: 139315, 2023 Oct.
Article en En | MEDLINE | ID: mdl-37392799
Since bisphenol A (BPA) and dimethyl bisphenol A (DM-BPA) are human endocrine disruptors (EDCs) with tiny potential differences (44 mV) and widespread applications, there is a lack of published reports on their simultaneous detection. Therefore, this study reports a novel electrochemical detection system capable of simultaneous direct detection of BPA and DM-BPA using screen-printed carbon electrodes (SPCE) as a sensing platform. To improve the electrochemical performance of the SPCE, the SPCE was modified by using a combination of Pt nanoparticles modified with single-walled carbon nanotubes (Pt@SWCNTs), MXene (Ti3C2), and graphene oxide (GO). In addition, the GO in Pt@SWCNTs-MXene-GO was reduced to reduced graphene oxide (rGO) by the action of electric field (-1.2 V), which significantly improved the electrochemical properties of the composites and effectively solved the problem of dispersion of the modified materials on the electrode surface. Under optimal experimental conditions, Pt@SWCNTs-Ti3C2-rGO/SPCE exhibited a suitable detection range (0.006-7.4 µmol L-1) and low detection limits (2.8 and 3 nmol L-1, S/N = 3) for the simultaneous detection of BPA (0.392 V vs. Ag/AgCl) and DM-BPA (0.436 V vs. Ag/AgCl)). Thus, this study provides new insights into detecting compounds with similar structures and slight potential differences. Finally, the developed sensor's reproducibility, stability, interference resistance and accuracy were demonstrated with satisfactory results.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nanotubos de Carbono / Grafito Tipo de estudio: Diagnostic_studies Límite: Humans Idioma: En Revista: Chemosphere Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nanotubos de Carbono / Grafito Tipo de estudio: Diagnostic_studies Límite: Humans Idioma: En Revista: Chemosphere Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido