Hazra Chowdhury, Ipsita and Kundu, Sukanya and Naskar, Milan Kanti (2018) Effect of organic acids on the physicochemical properties of titania and its photodegradation efficiency of methyl orange. Journal of Physics and Chemistry of Solids, 121. pp. 367-374. ISSN 0022-3697

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Abstract

Mesoporous mixed phase titania was synthesized via a solvothermal method in the absence and presence of different organic acids (acetic acid, tartaric acid and citric acid) followed by calcinations at 700 degrees C/2 h. The synthesized product was characterized by XRD, DTA/TG, Raman, FTIR, N-2 adsorption-desorption study, FESEM, TEM and UV-DRS. The presence of anatase and rutile phase of TiO2 was confirmed by XRD, Raman and TEM analysis. Citric acid modified TiO2 showed highest rutile content (66%) with lowest band gap energy (2.96 eV). Microstructural study of tartaric and citric acids modified TiO2 revealed spherical particles (1-3 mu m) consisting of nanoparticle (10-40 nm) assembly. The photocatalyst prepared using tartaric acid showed the highest photocatalytic activity with rate constant 0.0079 min(-1), which is due to its highest BET surface area (similar to 39 m(2) g(-1)) and efficient synergistic effect between anatase and rutile phase.

Item Type:	Article
Subjects:	Ceramic-Metal Systems Engineering Materials
Divisions:	Sol Gel
Depositing User:	Bidhan Chaudhuri
Date Deposited:	17 Jan 2019 07:41
Last Modified:	17 Jan 2019 07:41
URI:	http://cgcri.csircentral.net/id/eprint/4478

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