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Visible light-driven novel nanocomposite (BiVO4/CuCr2O4) for efficient degradation of organic dye

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Title Visible light-driven novel nanocomposite (BiVO4/CuCr2O4) for efficient degradation of organic dye
 
Creator BAJAJ, R
SHARMA, M
BAHADUR, D
 
Subject PHOTOCATALYTIC ACTIVITY
IRRADIATION
CUCR2O4
TEMPERATURE
HYBRID
 
Description In the present study, BiVO4/CuCr2O4 nanocomposites synthesized via a chemical route are applied as a photocatalyst for the degradation of methylene blue (MB) dye. The photocatalytic activity results indicated a substantial degradation of MB dye by similar to 90% over the surface of nanocomposite catalyst under visible light illumination. The nanocomposite showed a photocatalytic activity for MB dye degradation which is three times higher compared to that of BiVO4. This has been attributed to photogenerated electron-hole pair charge separation. The prepared photocatalysts were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis absorption and photoluminescence spectroscopy. Furthermore, an oxidizing reagent such as H2O2 was added to the photocatalytic system, which may act as an alternative electron scavenger and resulting in a notably enhanced rate of pollutant destruction. In addition, the effect of polyaniline has also been studied by synthesizing an organic/inorganic hybrid material (BiVO4/CuCr2O4/PANI). It has been observed that 95% photodegradation of organic dye takes place on the nanocomposite surface with visible light. A possible mechanism explaining the origin of enhanced performance of nanocomposite and nanohybrid is proposed.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-10-17T05:21:37Z
2014-10-17T05:21:37Z
2013
 
Type Article
 
Identifier DALTON TRANSACTIONS, 42(19)6736-6744
http://dx.doi.org/10.1039/c2dt32753h
http://dspace.library.iitb.ac.in/jspui/handle/100/16054
 
Language en