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Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles

Ravishankar, TN and Manjunatha, K and Ramakrishnappa, T and Nagaraju, G and Kumar, Dhanith and Sarakar, S and Anandakumar, BS and Chandrappa, GT and Reddy, Viswanath and Dupont, J (2014) Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles. In: MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 26 . pp. 7-17.

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Official URL: http://dx.doi.org/ 10.1016/j.mssp.2014.03.027


Zinc oxide (ZnO) and silver doped zinc oxide (ZnO:Ag) nanoparticles were prepared using nitrates of zinc and silver as oxidizers and ethylene diaminetetraacetic acid (EDTA) as a fuel via low-temperature combustion synthesis (LCS) at 500 degrees C. X-ray diffraction (XRD) pattern indicates the presence of silver in the hexagonal wurtzite structure of ZnO. Fourier transform infrared (FTIR) spectrum indicates the presence of Ag-Zn-O stretching vibration at 510 cm(-1). Transmission electron microscopy (TEM) images shows that the average particle size of ZnO and ZnO:Ag nanoparticles were found to be 58 nm and 52 nm, respectively. X-ray photoelectron spectroscopy (XPS) data clearly indicates the presence of Ag in ZnO crystal lattice. The above characterization techniques indicate that the incorporation of silver affects the structural and optical properties of ZnO nanoparticles. ZnO:Ag nanoparticles exhibited 3% higher photocatalytic efficiency than pure ZnO nanoparticles. ZnO:Ag nanoparticles show better photocatalytic activity for the degradation of trypan blue (TrB) compared to undoped ZnO nanoparticles. (C) 2014 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Keywords: Silver doped zinc oxide; Combustion; Trypan blue; Optical properties; Degradation
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 29 Dec 2014 05:12
Last Modified: 29 Dec 2014 05:12
URI: http://eprints.iisc.ac.in/id/eprint/50538

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