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Title: Preparation and characterization of ZnO-TiO{sub 2} nanocomposite for photocatalytic disinfection of bacteria and detoxification of cyanide under visible light

Abstract

Highlights: {yields} ZnO-TiO{sub 2} nanocomposite, obtained by modified ammonia-evaporation-induced synthetic method, absorbs visible light. {yields} ZnO-TiO{sub 2} nanoparticles catalyze bacteria disinfection and cyanide detoxification under sunlight. {yields} ZnO-TiO{sub 2} nanocomposite is selective in photocatalysis. -- Abstract: ZnO-TiO{sub 2} nanocomposite was prepared by modified ammonia-evaporation-induced synthetic method. It was characterized by powder X-ray diffraction, transmission electron microscopy, selected area electron diffraction, and energy dispersive X-ray, UV-visible diffuse reflectance, photoluminescence and electrochemical impedance spectroscopies. Incorporation of ZnO leads to visible light absorption, larger charge transfer resistance and lower capacitance. The nanocomposite effectively catalyzes the inactivation of E. coli under visible light. Further, the prepared nanocomposite displays selective photocatalysis. While its photocatalytic efficiency to detoxify cyanide with visible light is higher than that of TiO{sub 2} P25, its efficiency to degrade methylene blue, sunset yellow and rhodamine B dyes under UV-A light is less than that of TiO{sub 2} P25.

Authors:
; ;  [1];  [2]
  1. Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamilnadu (India)
  2. Division of Microbiology, Rajah Muthiah Medical College, Annamalai University, Annamalainagar 608002, Tamilnadu (India)
Publication Date:
OSTI Identifier:
22210084
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 46; Journal Issue: 10; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BACTERIA; CYANIDES; ELECTRON DIFFRACTION; PHOTOCATALYSIS; PHOTOLUMINESCENCE; SEMICONDUCTOR MATERIALS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZINC OXIDES

Citation Formats

Karunakaran, C., E-mail: karunakaranc@rediffmail.com, Abiramasundari, G., Gomathisankar, P., Manikandan, G., and Anandi, V. Preparation and characterization of ZnO-TiO{sub 2} nanocomposite for photocatalytic disinfection of bacteria and detoxification of cyanide under visible light. United States: N. p., 2011. Web. doi:10.1016/J.MATERRESBULL.2011.06.019.
Karunakaran, C., E-mail: karunakaranc@rediffmail.com, Abiramasundari, G., Gomathisankar, P., Manikandan, G., & Anandi, V. Preparation and characterization of ZnO-TiO{sub 2} nanocomposite for photocatalytic disinfection of bacteria and detoxification of cyanide under visible light. United States. https://doi.org/10.1016/J.MATERRESBULL.2011.06.019
Karunakaran, C., E-mail: karunakaranc@rediffmail.com, Abiramasundari, G., Gomathisankar, P., Manikandan, G., and Anandi, V. Sat . "Preparation and characterization of ZnO-TiO{sub 2} nanocomposite for photocatalytic disinfection of bacteria and detoxification of cyanide under visible light". United States. https://doi.org/10.1016/J.MATERRESBULL.2011.06.019.
@article{osti_22210084,
title = {Preparation and characterization of ZnO-TiO{sub 2} nanocomposite for photocatalytic disinfection of bacteria and detoxification of cyanide under visible light},
author = {Karunakaran, C., E-mail: karunakaranc@rediffmail.com and Abiramasundari, G. and Gomathisankar, P. and Manikandan, G. and Anandi, V.},
abstractNote = {Highlights: {yields} ZnO-TiO{sub 2} nanocomposite, obtained by modified ammonia-evaporation-induced synthetic method, absorbs visible light. {yields} ZnO-TiO{sub 2} nanoparticles catalyze bacteria disinfection and cyanide detoxification under sunlight. {yields} ZnO-TiO{sub 2} nanocomposite is selective in photocatalysis. -- Abstract: ZnO-TiO{sub 2} nanocomposite was prepared by modified ammonia-evaporation-induced synthetic method. It was characterized by powder X-ray diffraction, transmission electron microscopy, selected area electron diffraction, and energy dispersive X-ray, UV-visible diffuse reflectance, photoluminescence and electrochemical impedance spectroscopies. Incorporation of ZnO leads to visible light absorption, larger charge transfer resistance and lower capacitance. The nanocomposite effectively catalyzes the inactivation of E. coli under visible light. Further, the prepared nanocomposite displays selective photocatalysis. While its photocatalytic efficiency to detoxify cyanide with visible light is higher than that of TiO{sub 2} P25, its efficiency to degrade methylene blue, sunset yellow and rhodamine B dyes under UV-A light is less than that of TiO{sub 2} P25.},
doi = {10.1016/J.MATERRESBULL.2011.06.019},
url = {https://www.osti.gov/biblio/22210084}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 10,
volume = 46,
place = {United States},
year = {2011},
month = {10}
}