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Photoelectrochemical Detection of H 2 O 2 Based on Flower‐Like CuInS 2 ‐Graphene Hybrid
Author(s) -
Wang Siwen,
Zhu Yihua,
Yang Xiaoling,
Li Chunzhong
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201300515
Subject(s) - graphene , indium tin oxide , materials science , electrode , electrochemistry , horseradish peroxidase , adsorption , chemical engineering , biosensor , nanotechnology , layer (electronics) , chemistry , organic chemistry , enzyme , engineering
A novel photoelectrochemcial biosensing system was fabricated based on the composition of horseradish peroxidase (HRP), flower‐like CuInS 2 (CIS) and graphene on indium tin oxide (ITO) electrode for detecting H 2 O 2 . The graphene layer was used as highly conductive scaffolds for electron transport from the ITO electrode to CIS. Furthermore, the flower‐like CIS enhanced the multi‐reflection of light and provided matrixes for the adsorption of HRP. Utilizing one‐pot solvothermal method, we prepared flower‐like CIS‐graphene hybrid (GCIS). Electrochemical tests displayed advantage of graphene with better electron conductivity, and HRP/GCIS showed higher photoelectrochemical behavior.