A facile synthesis of nanocrystalline anatase TiO<inf>2</inf>from TiOSO<inf>4</inf>aqueous solution

• Main Authors: Songpon Ngamta, Nattakritta Boonprakob, Natda Wetchakun, Kontad Ounnunkad, Sukon Phanichphant, Burapat Inceesungvorn
• Format: Journal
• Published: 2018
• Subjects: Engineering; Materials Science; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84877942725&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/52564
• Institution: Chiang Mai University

A green and simple synthetic route via a thermal hydrolysis of titanyl sulphate (TiOSO4) has been employed to prepare nanocrystalline anatase titanium dioxide (TiO2) without further calcination. X-ray diffraction (XRD) clearly showed that the anatase crystalline structure was already formed under the reaction conditions at 80.0±2.0 C. The obtained anatase TiO2showed high thermal stability as the anatase-to-rutile transformation in only 25 wt% occurred at 900 C. Scanning electron (SEM) and transmission electron (TEM) micrographs revealed that TiO2secondary particles comprised irregular primary particles with diameters of 8-22 nm depending on the calcination temperature. Superior UV-light absorption intensity compared with the commercial P25 TiO2suggested the great potential of the obtained material for use as a highly efficient photocatalyst under UV irradiation. © 2013 Elsevier B.V.