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Synthesis, Characterization and Catalytic Activity of CdS‐Graphene Oxide Nanocomposites
Author(s) -
Josephine Durairaj Santhakumar Ruby,
Sakthivel Balasubramanian,
Sethuraman Kunjithapatham,
Dhakshinamoorthy Amarajothi
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600384
Subject(s) - x ray photoelectron spectroscopy , graphene , materials science , scanning electron microscope , fourier transform infrared spectroscopy , nanocomposite , transmission electron microscopy , photoluminescence , oxide , catalysis , chemical engineering , powder diffraction , nanotechnology , crystallography , chemistry , composite material , organic chemistry , optoelectronics , metallurgy , engineering
In the present work, cubic and hexagonal phases of CdS are synthesized and deposited on graphene oxide (GO) layers. These nanocomposites are characterized by UV‐Visible, photoluminescence, X‐ray photoelectron spectroscopy (XPS), Fourier Transform infrared spectroscopy (FT‐IR), powder X‐ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and transmission electron microscopic (TEM) images for the existence of CdS as well as GO sheets. The catalytic activity of c‐CdS/GO (cubic CdS) and h‐CdS/GO (hexagonal CdS) nanocomposites are compared in the synthesis of 2‐phenylbenzimidazole from benzaldehyde and o‐pheneylenediamine under mild reaction conditions. It is interesting to note that the present experimental conditions allow detecting only the formation of 2‐phenylbenzimidazole as the final product. The catalyst stability is also investigated by powder XRD, SEM and TEM images and observing some aggregation of CdS nanoparticles.