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MXene-reinforced octahedral PtCu nanocages with boosted electrocatalytic performance towards endocrine disrupting pollutants sensing.
Liu, Xian; Chen, Like; Yang, Yang; Xu, Liping; Sun, Junyong; Gan, Tian.
Afiliação
  • Liu X; College of Chemistry and Chemical Engineering & Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, PR China.
  • Chen L; College of Chemistry and Chemical Engineering & Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, PR China.
  • Yang Y; College of Chemistry and Chemical Engineering & Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, PR China.
  • Xu L; College of Chemistry and Chemical Engineering & Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, PR China.
  • Sun J; College of Chemistry and Chemical Engineering & Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, PR China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 3630
  • Gan T; College of Chemistry and Chemical Engineering & Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, PR China. Electronic address: gantsjy@163.com.
J Hazard Mater ; 442: 130000, 2023 01 15.
Article em En | MEDLINE | ID: mdl-36137886
Rational tailoring of hollow and porous bimetallic structures with excellent electrocatalytic performance is appealing yet challenging. Further, combining independent bimetallic nanoparticles with flexible two-dimensional substrate by forming stable heterocomplex is still highly desired for electrocatalysis. Herein, hierarchical PtCu alloy octahedrons with hollow interiors and nanosheet-assembled nanoshells were synthesized by a facile and efficient chemical transformation strategy using Cu2O as sacrificial templates. Such octahedral PtCu nanocages displayed significantly enhanced electrocatalytic activity owing to their unique hollow and porous architectures which provided easy access for analytes to the catalyst surface. Thereafter, introduction of Ti3C2Tx MXene was realized via simple incubation of Ti3C2Tx in solution containing the 3-aminopropyltriethoxysilane-capped PtCu, and their electrostatic interaction guaranteed the firm adsorption of PtCu nanocages on Ti3C2Tx nanosheets. It turned out that the sensitivity of the hybrid sensor was remarkably improved for electrochemical monitoring of endocrine disrupting pollutants in water, exhibiting ultrawide linear ranges and sub-nanomole detection limits. The eminent electrode performance is attributed to the high specific area, fast electrochemical kinetics, decent electrical catalytic ability, and the synergistic effect between Pt, Cu, and MXene.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Ambientais Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Ambientais Idioma: En Ano de publicação: 2023 Tipo de documento: Article