Transfer-free CVD graphene for highly sensitive glucose sensors  

作　　者：Shijing Wei Yabin Hao Zhe Ying Chuan Xu Qinwei Wei Sen Xue Hui-Ming Cheng Wencai Ren Lai-Peng Ma You Zeng 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China [2]School of Physical Science and Technology,ShanghaiTech University,Shanghai,200031,China [3]Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai,200050,China [4]University of Chinese Academy of Sciences,Beijing,100049,China [5]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang,110016,China [6]School of Materials Science and Engineering,Northeastern University,Shenyang,110819,China [7]Shenzhen Geim Graphene Center,Tsinghua-Berkeley Shenzhen Institute(TBSI),Tsinghua University,Shenzhen,518055,China

出　　处：《Journal of Materials Science & Technology》2020年第2期71-76,共6页材料科学技术（英文版）

基　　金：financially supported by the Ministry of Science and Technology of China(Nos.2016YFA0200101 and 2016YFB04001104);the National Natural Science Foundation of China(Nos.51325205,51290273,51521091,51272256,61422406,51802317 and 61574143);the Chinese Academy of Sciences(Nos.KGZD-EW-303-1,KGZD-EW-303-3,KGZD-EW-T06 and XDPB06);the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB30000000);the Liaoning Revitalization Talents Program(No.XLYC1808013);the Liaoning Key R&D Program;the Program for Guangdong Introducing Innovative and Enterpreneurial Teams;the Development and Reform Commission of Shenzhen Municipality for the development of the“Low-Dimensional Materials and Devices”discipline.

摘　　要：Chemical vapor deposition(CVD)graphene film is a promising electrode-modifying material for fabricating high-performance glucose sensor due to its high electrical conductivity and two-dimensional structure over large area.However,the use of typical metal-based CVD graphene suffers from the residue contamination of polymer transfer-support and heavy metal ions.In this work,we directly grew fewlayer graphene on the SiO2/Si substrate without transfer process and then fabricated graphene-based glucose sensors by sequentially immobilizing glucose oxidase and depositing Nafion layer on its surface that was functionalized by oxygen-plasma treatment.Our transfer-and metal-free process shows distinct advantage over the common metal-CVD method in improving the electrochemical performance by eliminating the contamination of transfer-residue.Thus-obtained glucose sensor shows a high sensitivity(16.16μA mM-1cm-2)with a detection limit of 124.19μM.This method is simple and promising for the development of highly sensitive glucose sensors.Chemical vapor deposition（CVD） graphene film is a promising electrode-modifying material for fabricating high-performance glucose sensor due to its high electrical conductivity and two-dimensional structure over large area. However, the use of typical metal-based CVD graphene suffers from the residue contamination of polymer transfer-support and heavy metal ions. In this work, we directly grew fewlayer graphene on the SiO2/Si substrate without transfer process and then fabricated graphene-based glucose sensors by sequentially immobilizing glucose oxidase and depositing Nafion layer on its surface that was functionalized by oxygen-plasma treatment. Our transfer-and metal-free process shows distinct advantage over the common metal-CVD method in improving the electrochemical performance by eliminating the contamination of transfer-residue. Thus-obtained glucose sensor shows a high sensitivity(16.16 μA mM-1cm-2) with a detection limit of 124.19 μM. This method is simple and promising for the development of highly sensitive glucose sensors.

关 键 词：GRAPHENE Chemical vapor DEPOSITION Transfer-free Oxygen-plasma treatment GLUCOSE sensor 

分 类 号：O613.71[理学—无机化学] O657.1[理学—化学]