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NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.50A [2011] >
IJC-A Vol.50A(07) [July 2011] >
| Title: | Environmental remediation of wastewater containing azo dyes with a heterostructured nanophotocatalyst |
| Authors: | Bansal, Priti
Dhir, Amit
Prakash, N Tejo
Sud, Dhiraj |
| Keywords: | Photochemistry
Photocatalyst
Dye degradation
Decolorization
Azo compounds
Wastewater |
| Issue Date: | Jul-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The synthesis, characterization and
photocatalytic activity of heterostructured ZnO/TiO2
nanophotocatalyst is reported. The photocatalyst ZnO/TiO2 prepared
in molar ratio of 1:9 (ZnO: TiO2) and characterized with X-ray
diffraction, SEM-EDX and UV–vis data. The photocatalytic activity has been
evaluated using acid orange 7 as a model organic compound. The rate of
decolorization has been estimated from residual concentration
spectrophotometrically and mineralization rate studied by measuring COD. The
results have been compared with TiO2-P25 Degussa. ZnO/TiO2
shows promising photocatalytic activity and 12% higher rate of decolourisation
of the dye than that of TiO2 -P25 Degussa. The effect of operational
parameters such as pH of reaction medium and concentration of dye on the
decolorization rate of AO7 in water has also been investigated. The efficiency
of the photocatalyst is maximum at pH 7, an important aspect from the
view of its commercial application in waste water treatment technology. |
| Page(s): | 991-995 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(07) [July 2011]
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