Environmentally Benign Organic Dye Conversion under UV Light through TiO2-ZnO Nanocomposite

Author:

Deshmukh Sandip M.,Arbuj Sudhir S.,Babar Santosh B.ORCID,Shaikh Shoyebmohamad F.,Tamboli Asiya M.,Nguyen Truong Nguyen Tam,Kim Chang-Duk,Khetre Sanjay M.,Tamboli Mohaseen S.ORCID,Bamane Sambhaji R.

Abstract

In this work, we developed a very simple and novel approach for synthesizing TiO2-ZnO nanocomposites via the urea-assisted thermal decomposition of titanium oxysulphate and zinc acetate at different weight ratios. The synthesized nanocomposite samples were studied by means of HR-TEM, XRD, STEM, UV–Vis DRS, PL and EDS. The observed results demonstrate that the TiO2-ZnO nanocomposite consists of an anatase crystal phase of TiO2 with a crystallite size of 10–15 nm. Combined characterization, including UV–Vis DRS, STEM, EDS and HR-TEM, revealed the successful formation of a heterojunction between TiO2 and ZnO and an improvement in UV spectrum absorption. The photocatalytic activity was explored using MO degradation under ultraviolet light illumination. The results of the optimized TiO2-ZnO nanocomposite show excellent photocatalytic activity and photostability over a number of degradation reaction cycles. In addition, the current approach has immense potential to be used as a proficient method for synthesizing mixed metal oxide nanocomposites.

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

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