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Заглавие документа: Sol-gel template synthesis of mesoporous carbon-doped TiO2 with photocatalytic activity under visible light
Авторы: Ovodok, Evgeni
Maltanava, Hanna
Poznyak, Sergey
Ivanovskaya, Maria
Kudlash, Alexander
Scharnagl, Nico
Tedim, Joao
Тема: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ
Дата публикации: 2018
Издатель: ELSEVIER
Библиографическое описание источника: Materials Today: Proceedings
Аннотация: Mesoporous TiO2 powders with an anatase framework were synthesized through surfactant-assisted template method. The concentrated titania sol (7-8 wt.%) prepared from TiCl4 as a precursor was used in this synthesis. The soluble triblock copolymer Pluronic F127 was employed as a structure-directing agent and a carbon precursor to fabricate the carbon-doped mesoporous titania. The synthesized powders were characterized by XRD, HRTEM, Raman spectroscopy, UV-Vis reflectance spectroscopy, N2 adsorption/desorption and TG/DSC methods. The mesoporous titania annealed at 350° C was shown to have a high specific surface area up to 192 m2/g and a narrow pore size distribution. After annealing, carbon species in graphitic form were detected in the template-prepared TiO2 samples using Raman spectroscopy measurements. The photocatalytic performance of the samples was characterized in the process of Rhodamine B decomposition under visible light irradiation. The enhanced visible light photocatalytic efficiency of the template-prepared TiO2 powders as compared with that of Degussa P25 can be attributed to the associated effects of high specific surface area, pure anatase crystalline structure and carbon doping.
URI документа: http://elib.bsu.by/handle/123456789/198359
Место хранения оригинала: Оригинал
Располагается в коллекциях:Хроматографический анализ лекарственных средств

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