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Synergistic effect enhances the peroxidase-like activity in platinum nanoparticle-supported metal—organic framework hybrid nanozymes for ultrasensitive detection of glucose

查看全文 作　　者：Jing [1]Li;Jie [1]Zhao;Shengqiang [3]Li;Yang [1]Chen;Weiqiang [4]Lv;Jiahui [1]Zhang;Libing [1]Zhang;Zhen [1]Zhang;Xiaoquan [1,2]Lu 高影响力作者 机构地区：[1]Tianjin Key Laboratory of Molecular Optoelectronic,Department of Chemistry,School of Science,Tianjin University,Tianjin,300072,China;[2]Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province,College of Chemistry&Chemical Engineering,Northwest Normal University,Lanzhou,730070,China;[3]First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin,Tianjin,300000,China;[4]School of Physics,University of Electronic Science and Technology,Chengdu,611731,China高影响力机构 出　　处：《Nano Research》索引2021年第14卷第12期,共7页高影响力期刊 基　　金：This work was supported by National Natural Science Foundation of China(Nos.21705117,21575115,21904095,and 22004089);Program of Tianjin Science and Technology Major Project and Engineering(No.19ZXYXSY00090);the Program for Chang Jiang Scholars and Innovative Research Team,Ministry of Education,China(No.IRT-16R61);Special Fund Project for the Central Government to Guide Local Science and Technology Development(2020);the Applied Fundamental Research Fund of Sichuan Province(No.2019YJ0169);the new scholar fund of UESTC. 摘　　要：The metal—organic frameworks(MOFs)are expected as ideal biomimetic enzymes for colorimetric glucose detection because of their large surface areas,well defined pore structures,tunable chemical composition,and multi-functional sites.However,the intrinsically chemical instability and low mimetic enzyme activity of MOFs hinder the application of them in imitating the enzyme reactions.In this work,we demonstrated a metal-MOF synergistic catalysis strategy,by loading Pt nanoparticles(Pt NPs)on MIL-88B-NH2(Fe-MOF)to increase peroxidase-like activity for the detection of glucose.The induced electrons transfer from Pt atom to Fe atom accelerated the redox cycling of Fe^(3+)/Fe^(2+),improved the overall efficiency of the peroxidase-like reaction,and enabled the efficient and robust colorimetric glucose detection,which was proved by both experiments and density functional theory(DFT)calculation.Additionally,the sensitivity and chemical stability of this synergistic effect strategy to detect the glucose are not affected by the complex external factors,which represented a great potential in fast,easy,sensitive,and specific recognition of clinical diabetes. 关 键 词：metal—organic frameworks Pt nanoparticles synergistic effect glucose detection
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