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Copper Oxide Nanoparticles with Graphitic Carbon Nitride for Ultrasensitive Photoelectrochemical Aptasensor of Bisphenol A
Author(s) -
Yang Liqin,
Zhao Zhiju,
Hu Jie,
Wang Huibin,
Dong Junfang,
Wan Xiang,
Cai Zhenyu,
Li Mengying
Publication year - 2020
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.201900638
Subject(s) - materials science , calcination , bisphenol a , nanoparticle , transmission electron microscopy , scanning electron microscope , chemical engineering , hydrothermal circulation , graphitic carbon nitride , carbon nitride , nanotechnology , nuclear chemistry , photocatalysis , chemistry , catalysis , composite material , biochemistry , engineering , epoxy
In this work, g‐C 3 N 4 , CuO and g‐C 3 N 4 /CuO−X (where × can be 3, 6, or 9) were synthesized through hydrothermal and calcination methods and used to fabricate photoelectrochemical (PEC) aptasensor for detection of bisphenol A (BPA). CuO nanoparticles covered with g‐C 3 N 4 were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The aptasensor based on g‐C 3 N 4 /CuO‐6 possessed high PEC activity due to its good conductivity and low electron recombination rate. PEC experiments demonstrate that the aptasensor based on g‐C 3 N 4 /CuO‐6 exhibits a broad linear range towards BPA from 0.02–10 ng L −1 and 50–1200 ng L −1 and reveals superior stability, selectivity and repeatability. Thus, g‐C 3 N 4 /CuO‐6 composite is a promising material for the determination of BPA in PEC field and has commercially viable.