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An Efficient Photocatalytic and Antibacterial Performance of Ni/Ce–Codoped CdS Nanostructure under Visible Light Irradiation
Author(s) -
Ranjith Rajendran,
Krishnakumar Varadharajan,
Boobas Singaram,
Venkatesan Jayaraman,
Jayaprakash Jeyaram
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801485
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , high resolution transmission electron microscopy , materials science , rhodamine b , diffuse reflectance infrared fourier transform , photoluminescence , visible spectrum , spectroscopy , fourier transform infrared spectroscopy , band gap , nuclear chemistry , photochemistry , transmission electron microscopy , chemical engineering , nanotechnology , chemistry , optoelectronics , catalysis , biochemistry , physics , engineering , quantum mechanics
In the present work, the Ni/Ce‐codoped CdS Nanoparticles (NPs) were synthesized through a hydrothermal method. The phase structure, chemical state, chemical composition, morphology and optical properties of prepared samples were characterized using X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), Energy Dispersive X‐Ray Analysis (EDX), Fourier transform infrared spectroscopy (FT‐IR), High‐resolution transmission electron microscopy (HRTEM), UV‐Vis diffuse reflectance spectroscopy (DRS), Photoluminescence (PL) spectroscopy studies and their photocatalytic activities of Rhodamine B (RhB) degradation were studied under visible light irradiation. The Ni and Ce doped CdS NPs showed higher photocatalytic activity compared to that of pure CdS, and the activity was further enhanced by codoping of Ni and Ce into CdS. The enhancement of photocatalytic activity is due to the synergistic effect of Ni and Ce ions and with a narrowed bandgap, which may facilitate inhabitation of the photogenerated charge carrier recombination. Meanwhile, the possible photocatalytic mechanism of Ni and Ce codoped CdS was proposed on the basis of trapping experiments. Additionally, the antibacterial activity of Ni/Ce codoped CdS NPs was evaluated against E. coli and S. aureus .