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Author Darwish, Maher ♦ Mohammadi, Ali ♦ Assi, Navid
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ NANOSCIENCE AND NANOTECHNOLOGY ♦ AQUEOUS SOLUTIONS ♦ CADMIUM SULFIDES ♦ CALCINATION ♦ CRYSTAL GROWTH ♦ FOURIER TRANSFORMATION ♦ GLYCOLS ♦ INFRARED SPECTRA ♦ IRRADIATION ♦ MICROWAVE RADIATION ♦ NANOPARTICLES ♦ NANOSTRUCTURES ♦ PARTICLE SIZE ♦ PHOTOCATALYSIS ♦ PVP ♦ SCANNING ELECTRON MICROSCOPY ♦ VISIBLE RADIATION ♦ X-RAY DIFFRACTION
Abstract Highlights: • PVP-stabilized CdS nanoparticles have been fabricated by a polyol-microwave method. • CdS nanoparticles were characterized and the size was approximately 48 ± 10 nm. • Catalytic activity of our nanoparticles was examined for tartrazine degradation. • Remarkable results were obtained under both UV and visible light irradiations. - Abstract: Polyvinylpyrrolidone capped cadmium sulfide nanoparticles have been successfully synthesized by a facile polyol method with ethylene glycol. Microwave irradiation and calcination were used to control the size and shape of nanoparticles. Characterization with scanning electron microscopy revealed a restricted nanoparticles growth comparing with the uncapped product, hexagonal phase and 48 nm average particle size were confirmed by X-ray diffraction, and finally mechanism of passivation was suggested depending on Fourier transform infrared spectra. The efficiency of nanoparticles was evaluated by the photocatalytic degradation of tartrazine in aqueous solution under UVC and visible light irradiation. Complete degradation of the dye was observed after 90 min of UVC irradiation under optimized conditions. Kinetic of reaction fitted well to the pseudo-first-order kinetic and Langmuir–Hinshelwood models. Furthermore, 85% degradation of the dye in 9 h under visible light suggests that cadmium sulfide is a promising tool to work under visible light for environmental remediation.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-02-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 74


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