Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120

Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120

<p>Abstract</p> <p>The AgBr loaded TiO<sub>2 </sub>catalyst was prepared by a feasible approach with AgBr and tetraisopropyl <it>ortho</it>titanate and characterized by BET surface area measurement, diffuse reflectance spectra (DRS), scanning electron micros...

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Main Authors: Sreedhar Bojja, Velmurugan Rengasamy, Swaminathan Meenakshisundaram
Format: Article
Language:English
Published: BMC 2011-07-01
Series:Chemistry Central Journal
Online Access:http://journal.chemistrycentral.com/content/5/1/46
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spelling doaj-b0c8616a08f34535805d9dc49594b24f2021-08-02T05:15:58ZengBMCChemistry Central Journal1752-153X2011-07-01514610.1186/1752-153X-5-46Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120Sreedhar BojjaVelmurugan RengasamySwaminathan Meenakshisundaram<p>Abstract</p> <p>The AgBr loaded TiO<sub>2 </sub>catalyst was prepared by a feasible approach with AgBr and tetraisopropyl <it>ortho</it>titanate and characterized by BET surface area measurement, diffuse reflectance spectra (DRS), scanning electron microscope (SEM), energy dispersive spectra (EDS), X-ray diffraction (XRD), transmission electron microscope (TEM) and atomic force microscope (AFM) analysis. The results of characterization reveal that AgBr loaded TiO<sub>2 </sub>has a nanostructure. Formation of the nanostructure in AgBr loaded TiO<sub>2 </sub>results in substantial shifting of the absorption edge of TiO<sub>2 </sub>to red and enhancement of visible light absorption. Electrochemical impedance spectroscopy measurements reveal that AgBr loaded TiO<sub>2 </sub>has a higher photoconductivity than prepared TiO<sub>2 </sub>due to higher separation efficiency of electron-hole pairs. Cyclic voltammetric studies reveal enhanced conductivity in AgBr loaded TiO<sub>2</sub>, which causes an increase in its photocatalytic activity. AgBr loaded TiO<sub>2 </sub>exhibited a higher photocatalytic activity than TiO<sub>2</sub>-P25 and prepared TiO<sub>2 </sub>in the photodegradation of Reactive Red 120 (RR 120).</p> http://journal.chemistrycentral.com/content/5/1/46
collection DOAJ
language English
format Article
sources DOAJ
author Sreedhar Bojja
Velmurugan Rengasamy
Swaminathan Meenakshisundaram
spellingShingle Sreedhar Bojja
Velmurugan Rengasamy
Swaminathan Meenakshisundaram
Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120
Chemistry Central Journal
author_facet Sreedhar Bojja
Velmurugan Rengasamy
Swaminathan Meenakshisundaram
author_sort Sreedhar Bojja
title Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120
title_short Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120
title_full Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120
title_fullStr Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120
title_full_unstemmed Nanostructured AgBr loaded TiO<sub>2</sub>: An efficient sunlight active photocatalyst for degradation of Reactive Red 120
title_sort nanostructured agbr loaded tio<sub>2</sub>: an efficient sunlight active photocatalyst for degradation of reactive red 120
publisher BMC
series Chemistry Central Journal
issn 1752-153X
publishDate 2011-07-01
description <p>Abstract</p> <p>The AgBr loaded TiO<sub>2 </sub>catalyst was prepared by a feasible approach with AgBr and tetraisopropyl <it>ortho</it>titanate and characterized by BET surface area measurement, diffuse reflectance spectra (DRS), scanning electron microscope (SEM), energy dispersive spectra (EDS), X-ray diffraction (XRD), transmission electron microscope (TEM) and atomic force microscope (AFM) analysis. The results of characterization reveal that AgBr loaded TiO<sub>2 </sub>has a nanostructure. Formation of the nanostructure in AgBr loaded TiO<sub>2 </sub>results in substantial shifting of the absorption edge of TiO<sub>2 </sub>to red and enhancement of visible light absorption. Electrochemical impedance spectroscopy measurements reveal that AgBr loaded TiO<sub>2 </sub>has a higher photoconductivity than prepared TiO<sub>2 </sub>due to higher separation efficiency of electron-hole pairs. Cyclic voltammetric studies reveal enhanced conductivity in AgBr loaded TiO<sub>2</sub>, which causes an increase in its photocatalytic activity. AgBr loaded TiO<sub>2 </sub>exhibited a higher photocatalytic activity than TiO<sub>2</sub>-P25 and prepared TiO<sub>2 </sub>in the photodegradation of Reactive Red 120 (RR 120).</p>
url http://journal.chemistrycentral.com/content/5/1/46
work_keys_str_mv AT sreedharbojja nanostructuredagbrloadedtiosub2subanefficientsunlightactivephotocatalystfordegradationofreactivered120
AT velmuruganrengasamy nanostructuredagbrloadedtiosub2subanefficientsunlightactivephotocatalystfordegradationofreactivered120
AT swaminathanmeenakshisundaram nanostructuredagbrloadedtiosub2subanefficientsunlightactivephotocatalystfordegradationofreactivered120
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