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Tailoring the Coordination Environment of Fe/Zn-BDC to Boost Peroxidase-like Activity for Highly Selective Detection of PFOS.
Liu, Qian; Chen, Qiumeng; Tong, Yuan-Jun; Zou, Xue; Zheng, Xiaoke; Gong, Zhengjun.
Afiliación
  • Liu Q; School of Chemistry, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
  • Chen Q; School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 611756, China.
  • Tong YJ; College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
  • Zou X; School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 611756, China.
  • Zheng X; School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 611756, China.
  • Gong Z; School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 611756, China.
Anal Chem ; 96(11): 4673-4681, 2024 03 19.
Article en En | MEDLINE | ID: mdl-38451931
ABSTRACT
Perfluorooctanesulfonic acid potassium salt (PFOS) residues in ecosystems over long periods are of increasing concern and require a selective and stable optical probe for monitoring. Herein, two functional groups (-F and -NH2) with opposite electronic modulation ability were introduced into Fe/Zn-BDC (denoted as Fe/Zn-BDC-F4 and Fe/Zn-BDC-NH2, respectively) to tailor the coordination environment of the Fe metal center, further regulating the nanozyme activity efficiently. Notably, the peroxidase-like activity is related to the coordination environment of the nanozymes and obeys the following order Fe/Zn-BDC-F4 > Fe/Zn-BDC > Fe/Zn-BDC-NH2. Based on the excellent peroxidase-like activity of Fe/Zn-BDC-F4 and the characteristics of being rich in F atoms, a rapid, selective, and visible colorimetric method was developed for detecting PFOS with a detection limit of 100 nM. The detection mechanism was attributed to various interaction forces between Fe/Zn-BDC-F4 and PFOS, including electrostatic interactions, Fe-S interactions, Fe-F bonds, and halogen bonds. This work not only offers new insights into the atomic-scale rational design of highly active nanozymes but also presents a novel approach to detecting PFOS in environmental samples.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Potasio / Ecosistema Idioma: En Revista: Anal Chem Año: 2024 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Potasio / Ecosistema Idioma: En Revista: Anal Chem Año: 2024 Tipo del documento: Article País de afiliación: China