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Iron oxide nanoparticles coated with green tea extract as a novel magnetite reductant and stabilizer sorbent for silver ions: Synthetic application of Fe 3 O 4 @green tea/Ag nanoparticles as magnetically separable and reusable nanocatalyst for reduction of 4‐nitrophenol
Author(s) -
Veisi Hojat,
Ghorbani Fatemeh
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3711
Subject(s) - chemistry , silver nanoparticle , green tea extract , reducing agent , aqueous solution , nuclear chemistry , fourier transform infrared spectroscopy , catalysis , nanoparticle , sorbent , green chemistry , chemical engineering , inorganic chemistry , adsorption , organic chemistry , green tea , reaction mechanism , food science , engineering
Green tea extract having many phenolic hydroxyl and carbonyl functional groups in its molecular framework can be used in the modification of Fe 3 O 4 nanoparticles. Moreover, the feasibility of complexation of polyphenols with silver ions in aqueous solution can improve the surface properties and capacity of the Fe 3 O 4 @green tea extract nanoparticles (Fe 3 O 4 @GTE NPs) for sorption and reduction of silver ions. Therefore, the novel Fe 3 O 4 @GTE NPs nano‐sorbent has potential ability as both reducing and stabilizing agent for immobilization of silver nanoparticles to make a novel magnetic silver nanocatalyst (Fe 3 O 4 @GTE/Ag NPs). Inductively coupled plasma analysis, transmission and scanning electron microscopies, energy‐dispersive X‐ray and Fourier transform infrared spectroscopies, and vibrating sample magnetometry were used to characterize the catalyst. Fe 3 O 4 @GTE/Ag NPs shows high catalytic activity as a recyclable nanocatalyst for the reduction of 4‐nitrophenol at room temperature.