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Fe 3 O 4 Microspheres and Graphene Oxide Encapsulated with Chitosan: A New Platform for Sensitive Determination of Hydroquinone and Catechol
Author(s) -
Lai Ting,
Cai Weihua,
Du Haijun,
Ye Jianshan
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.201300444
Subject(s) - hydroquinone , catechol , graphene , chitosan , oxide , selectivity , materials science , detection limit , electrode , nanometre , tap water , microsphere , nuclear chemistry , analytical chemistry (journal) , inorganic chemistry , chemical engineering , nanotechnology , chemistry , chromatography , composite material , organic chemistry , catalysis , metallurgy , engineering , environmental engineering
A novel sensor for sensitive determination of hydroquinone (HQ) and catechol (CC) was proposed using a Fe 3 O 4 microspheres‐graphene oxide (Fe 3 O 4 ‐GO) composites modified glassy carbon electrode (GCE) which was further encapsulated with chitosan (Chit‐Fe 3 O 4 ‐GO/GCE). The excellent electrocatalytic performance is probably related to the strong synergistic effect of the composites. The proposed sensor shows a linear response for HQ and CC in wide concentration ranges from 1.5 to 150 µM and 1 to 410 µM, with detection limits ( S / N =3) of 20 and 250 nM, respectively. Additionally, the sensor exhibits good selectivity and stability in tap water samples.