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One‐Step Synthesis of β‐Cyclodextrin Functionalized Graphene/Ag Nanocomposite and Its Application in Sensitive Determination of 4‐Nitrophenol
Author(s) -
Liu Weilu,
Li Cong,
Gu Yue,
Tang Liu,
Zhang Zhiquan,
Yang Ming
Publication year - 2013
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.201300227
Subject(s) - graphene , nitrophenol , detection limit , 4 nitrophenol , cyclodextrin , nanocomposite , oxide , electron transfer , materials science , kinetics , nuclear chemistry , analytical chemistry (journal) , chemistry , nanotechnology , nanoparticle , chromatography , organic chemistry , catalysis , metallurgy , physics , quantum mechanics
β ‐Cyclodextrin functionalized graphene/Ag nanocomposite (β‐CD/GN/Ag) was prepared via a one‐step microwave treatment of a mixture of graphene oxide and AgNO 3 . β‐CD/GN/Ag was employed as an enhanced element for the sensitive determination of 4‐nitrophenol. A wide linear response to 4‐nitrophenol in the concentration ranges of 1.0×10 −8 –1.0×10 −7 mol/L, and 1.0×10 −7 –1.5×10 −3 mol/L was achieved, with a low detection limit of 8.9×10 −10 mol/L ( S/N =3). The mechanism and the heterogeneous electron transfer kinetics of the 4‐nitrophenol reduction were discussed according to the rotating disk electrode experiments. Furthermore, the sensing platform has been applied to the determination of 4‐nitrophenol in real samples.