锐钛矿
纳米晶材料
材料科学
煅烧
光催化
化学工程
金红石
水溶液
二氧化钛
热稳定性
纳米技术
催化作用
复合材料
有机化学
化学
工程类
作者
Songpon Ngamta,Nattakritta Boonprakob,Natda Wetchakun,Kontad Ounnunkad,Sukon Phanichphant,Burapat Inceesungvorn
标识
DOI:10.1016/j.matlet.2013.04.064
摘要
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 TiO2 showed 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 TiO2 secondary 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.
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