title: CuO nanoparticles incorporated in hierarchical MFI zeolite as highly active electrocatalyst for non-enzymatic glucose sensing.
abstract: A hierarchical MFI zeolite, with typical micro/meso bimodal pore structures, was prepared by desilication method. CuO nanoparticles (NPs) were incorporated into the hierarchical MFI zeolite by impregnation method. CuO/hierarchical zeolite composites were characterized by X-ray diffraction, transmission electron microscopy and nitrogen sorption. It is shown that the CuO nanoparticles are mostly dispersed in the mesopores with remaining of the crystallinity and morphology of the host zeolite. CuO nanoparticles located in hierarchical zeolite exhibit the excellent electrocatalytic performances to oxidation of glucose in alkaline media. The electrocatalytic activity enhances with increasing the loading content of CuO from 5% to 15%. The composites were fabricated for nonenzyme glucose sensing. Under the optimal conditions, the sensor shows a wide linear range from 5×10(-7) to 1.84×10(-2) M with a low detection limit of 3.7×10(-7) M. The sensor also exhibits good repeatability, long-term stability as well as high selectivity against interfering species.
authors.affiliation: Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. Electronic address: jpdong@shu.edu.cn.
authors.forename: Junping
authors.initials: J
authors.lastname: Dong
authors.affiliation: Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.
authors.forename: Taolei
authors.initials: T
authors.lastname: Tian
authors.affiliation: Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.
authors.forename: Linxiao
authors.initials: L
authors.lastname: Ren
authors.affiliation: Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.
authors.forename: Jiaqiang
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China. Electronic address: xwcheng@fudan.edu.cn.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Cheng
mesh_terms: D001786:Blood Glucose / Q000032:analysis*; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D006801:Humans; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D016062:Porosity; D017641:Zeolites / Q000737:chemistry*
chemical_list: D001786:Blood Glucose; D017641:Zeolites; D002244:Carbon; D003300:Copper; C030973:cupric oxide
keywords: CuO; Electrocatalyst; Glucose; Hierarchical zeolite; Non-enzymatic biosensor