Visible light active Cu2+/TiO2 nanocatalyst for degradation of dichlorvos

Segne, T A and Tirukkovalluri, S R and Ch, Subrahmanyam (2012) Visible light active Cu2+/TiO2 nanocatalyst for degradation of dichlorvos. International Journal of Nanoscience, 11 (5). ISSN 0219-581X

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Abstract

The advantage of doping of TiO2 with copper has been utilized for enhanced degradation of pesticide under visible light irradiation. The sol-gel method has been undertaken for the synthesis of copper-doped TiO 2 by varying the dopant loadings from 0.25 wt.% to 1.0 wt.% of Cu2+. The doped samples were characterized by UV-Visible Diffuse Reflectance Spectroscopy (DRS), N2 adsorption-desorption (BET), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectrometry (EDS). The photocatalytic activity of the catalyst was tested by degradation of dichlorvos under visible light illumination. The results found that 0.75 wt.% of Cu2+ doped nanocatalysts have better photo catalytic activity than the rest of percentages doped, undoped TiO2 and Degussa P25. The reduction of band gap was estimated and the influence of the process parameters on photo catalytic activity of the catalyst has been explained.

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IITH Creators:
IITH CreatorsORCiD
Ch, SubrahmanyamUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: dichlorvos; Doping; photodegradation; sol-gel method; Adsorption desorption; Degussa P25; Dichlorvos; Doped sample; Energy dispersive spectrometry; Nano-catalyst; Nanocatalysts; Photocatalytic activities; Process parameters; TiO; UV-visible diffuse reflectance spectroscopy; Visible light; Visible-light irradiation
Subjects: ?? sub5.8 ??
Divisions: Department of Chemistry
Depositing User: Mr. Siva Shankar K
Date Deposited: 14 Oct 2014 08:43
Last Modified: 10 Apr 2015 11:03
URI: http://raiith.iith.ac.in/id/eprint/467
Publisher URL: http://dx.doi.org/10.1142/S0219581X12500305
OA policy: http://www.sherpa.ac.uk/romeo/issn/0219-581X/
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