title: Anneal-shrinked Cu2O dendrites grown on porous Cu foam as a robust interface for high-performance nonenzymatic glucose sensing.
abstract: Enzyme-free electrochemical detection of glucose in alkaline media with favorable properties has been acquired by fabricating a robust and large-surface sensing platform, which is composed of anneal-shrinked Cu2O dendrites grown on porous Cu foam. On the one hand, the good compatibility of electrodeposited Cu2O architectures and Cu foam substrate, together with a post-deposition anneal at 200°C, offers a mechanically stable interface for glucose determination. On the other hand, the macropores of Cu foam that is decorated with unique Cu2O dendrites provide large active surface for electrocatalytic reaction and mass transport. As a result, selective sensing of glucose in the linear concentration range of 0.001-1.4mM was achieved on the fabricated sensor, with a sensitivity of as high as 5.04mAcm-2mM-1and a detection limit of 0.13μM. Desired long-term performance stability was obtained, partially due to the strong adhesion of Cu2O microstructures to the Cu foam support after annealing. Practical monitoring of glucose in serum samples was also demonstrated on the proposed sensor.
authors: Institute of Green Chemistry and Chemical Technology, Jiangsu University, Zhenjiang 212013, PR China; School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: niuxiangheng@126.com.
authors: Xiangheng
authors: X
authors: Niu
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: pjm@ujs.edu.cn.
authors: Jianming
authors: J
authors: Pan
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors: Fengxian
authors: F
authors: Qiu
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors: Xin
authors: X
authors: Li
authors: Institute of Green Chemistry and Chemical Technology, Jiangsu University, Zhenjiang 212013, PR China.
authors: Yongsheng
authors: Y
authors: Yan
authors: Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
authors: Libo
authors: L
authors: Shi
authors: Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
authors: Hongli
authors: H
authors: Zhao
authors: Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China. Electronic address: minbolan@ecust.edu.cn.
authors: Minbo
authors: M
authors: Lan
mesh_terms: D000818:Animals; D003300:Copper / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D005947:Glucose / Q000032:analysis* / Q000737:chemistry; D016062:Porosity; D051381:Rats; D044967:Serum / Q000737:chemistry
chemical_list: D003300:Copper; D005947:Glucose; C000520:cuprous oxide
keywords: Cu(2)O dendrites on Cu foam; Nonenzymatic glucose detection; Performance stability; Robust interface; Thermal treatment