Affiliation:
1. Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Sub-Campus Osmanabad- 413 501, MS, India
Abstract
Background:
Different photocatalysts such as TiO2, ZnO and WO3 have been used for the
degradation of organic pollutants. However, these materials have some limitations, which have been
affected the catalytic efficiency in the various transformations. The composites of these materials
with other oxides can produce better results by tuning structural as well as optoelectrical properties.
The composite of TiO2 with ZrO2 has attracted attention due to its use in different areas, as ZrO2 and
TiO2 have similar physicochemical features.
Methods:
This research contains the preparation of ZrO2-TiO2 nanocomposites by hydrothermal
method and analysis of photocatalytic activity for the degradation of methylene blue and a mixture of
dyes under visible light irradiation.
Results:
Physicochemical characterization of ZrO2-TiO2 nanocomposites has been studied by using
different techniques. Prepared catalysts has shown anatase phase of TiO2 and tetragonal phase of
ZrO2. XRD, FESEM and HRTEM have supported the nanocrystalline nature of the composites. The
photocatalytic activity of composites and bare TiO2 samples were demonstrated for the degradation
of methylene blue dye. Enhanced activity has been shown by composite having Ti:Zr 3:1 molar proportion,
i.e., Ti3Zr. Effect of concentration of methylene blue, pH of the solution and catalyst loading
have been studied by using Ti3Zr. In addition, the degradation of a mixture of three dyes, namely
methylene blue, rhodamine B and methyl orange, has been studied.
Conclusion:
In summary, prepared ZrO2-TiO2 composites found to be nanocrystalline and visible
light active. These catalysts have shown activity for photocatalytic degradation of methylene blue
and a mixture of dyes.
Funder
University Grants Commission
Publisher
Bentham Science Publishers Ltd.
Subject
Pharmaceutical Science,Biomedical Engineering,Medicine (miscellaneous),Bioengineering,Biotechnology
Cited by
6 articles.
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