Microwave-assisted polyol synthesis and characterization of pvp-capped cds nanoparticles for the photocatalytic degradation of tartrazine

Journal Article · Mon Feb 15 04:00:00 EST 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.11.002· OSTI ID:22581440

Darwish, Maher ^[1]; Mohammadi, Ali ^[1]; Assi, Navid ^[1]

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1. Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of)

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.

• OSTI ID: 22581440
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 74; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 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