Improvement of photocatalytic activity of TiO2/g-C3N4 nanocomposite for RhB degradation under visible light

Articles in Press

Document Type : Original Article

Authors

1 School of Chemical, Petroleum and Gas Engineering, Iran University of science and technology, Tehran, Iran

2 Energy and Environment Research Center Niroo Research Institute Tehran Iran

3 Iran University of Science and Technology-Tehran-Iran

10.22034/ijche.2024.429357.1373

Abstract

In this research, in order to improve the electron-hole recombination rate in g-C3N4, the synthesis of TiO2/g-C3N4 composite was used. This composite was synthesized for the first time by urea, titanium tetrachloride and ammonia solution and its structural properties were analyzed by XRD, BET, FESEM, EDS, DRS and PL analysis and the successful creation of the composite was shown. DRS and PL analysis respectively reduced band gap (2.95 eV) proved the reason for the presence of g-C3N4 in the composite structure and the better performance of the composite than g-C3N4 in electron-hole separation. The results of the photocatalytic test also show the superiority of the composite over g-C3N4 in the decomposition of Rhodamine B, and it removes 96.6% of rhodamine b within 20 minutes. The effect of the presence of H2O2, the positive and negative role of nitrogen on the removal of Rhodamine B by TiO2/g-C3N4 composite was investigated. Moreover, in the presence of H2O2, more than 70% of the color was removed by the composite in the dark. Comparing the performance of the composite synthesized in this work with other similar composites shows its acceptable performance in the analysis of rhodamine under visible light irradiation.

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Iranian Chemical Engineering Journal

Articles in Press, Accepted Manuscript
Available Online from 03 April 2024

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