Document Details

Document Type : Article In Journal 
Document Title :
Synthesis, characterization, photocatalytic and photovoltaic performance of Ag-doped TiO2 loaded on the Pt-carbon spheres
Synthesis, characterization, photocatalytic and photovoltaic performance of Ag-doped TiO2 loaded on the Pt-carbon spheres
 
Subject : physics 
Document Language : English 
Abstract : Ag-doped TiO2 loaded on the Pt-carbon spheres have been synthesized and characterized by standard analytical techniques, i.e. UV-vis spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). In order to find the effect of loading of Ag doping on TiO2, the concentration of Ag varied from 0 to 3.5%. The XRD analysis showed that the obtained particles are anatase phase. The SEM images showed Ag-doped TiO2 are loaded on the surface of the Pt-carbon spheres. The photocatalytic activity of the synthesized particles was tested by studying the degradation of methyl orange and 2-chlorophenol as a function of time on visible light irradiation in aqueous suspension. Agdoped TiO2@Pt-carbon sphere particle with platinum concentration of 3.0% showed the highest photocatalytic activity as compared to the other Ag concentrations for the degradation of methyl orange and 2-chlorophenol. The electrical properties shows that the dielectric constant epsilon, and loss tangent (tan delta) decreases with the increase in frequency ups certain limit, which on further increase in frequency become independent. The dielectric property also decreases by increasing the dopant concentration, giving valuable information about conduction process. The a.c, conductivity increases with the increase in frequency. Under simulated solar illumination with an optimum content of Ag, the amount of dye absorption increases with the increase in Ag content resulting in the gradual increase in photovoltaic current and improvement in the cell efficiency from 623 to 7.41%. (C) 2014 Elsevier Ltd. All rights reserved 
ISSN : 1369-8001 
Journal Name : MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 
Volume : 27 
Issue Number : 1 
Publishing Year : 1435 AH
2014 AD 
Article Type : Article 
Added Date : Thursday, July 27, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
Omar A Al-HartomyAl-Hartomy, om InvestigatorDoctorateoalhartomy@hotmail.co.uk

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