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Plant‐supported silver nanoparticles: Efficient, economically viable and easily recoverable catalyst for the reduction of organic pollutants
Author(s) -
Ismail Muhammad,
Khan M.I.,
Khan Murad Ali,
Akhtar Kalsoom,
Asiri Abdullah M.,
Khan Sher Bahadar
Publication year - 2019
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.4971
Subject(s) - catalysis , chemistry , methyl orange , congo red , nuclear chemistry , rhodamine b , silver nanoparticle , scanning electron microscope , nanomaterials , nanoparticle , fourier transform infrared spectroscopy , 4 nitrophenol , reducing agent , adsorption , chemical engineering , nanotechnology , organic chemistry , photocatalysis , materials science , composite material , engineering
Ginger rhizome powder was used for the synthesis of supported metallic nanoparticle catalysts. A simple and novel adsorption method was used for the synthesis of silver nanoparticles loaded on ginger powder (Ag/GP), copper on ginger powder (Cu/GP) and nickel on ginger powder (Ni/GP). Among these, Ag/GP showed selective reduction of methyl orange and was used for further reactions. The prepared nanomaterials were characterized through X‐ray diffraction, transmission electron microscopy, field emission scanning electron microscopy, fourier transform infrared spectroscopy and energy‐dispersive X‐ray spectroscopy. The prepared Ag/GP catalyst was employed in the catalytic reduction of 4‐nitrophenol (4‐NP), 2‐nitrophenol (2‐NP), rhodamine B, methyl red and congo red. Ag/GP showed excellent catalytic reduction activity, the rate constants being 1.26 × 10 −3 and 2.38 × 10 −3 s −1 for 2‐NP and 4‐NP, respectively. The turnover frequency reached 1.06 min −1 for 2‐NP and 1.16 min −1 for 4‐NP when using the Ag/GP catalyst. The prepared Ag/GP catalyst demonstrated outstanding activity for the degradation of a mixed solution of dyes. Also, stability and reusability of the prepared catalyst were investigated, which showed outstanding reusability up to five times and was stable up to five days.