PФEС и ТПВ дослідження M/TiO2 (M=Co, Cu, Mn, Ni) порошків, одержаних золь-гель методом

• Date: 2015
• Main Authors: Petrik, I. S., Krylova, G. V., Kelyp, O. O., Lutsenko, L. V., Smirnova, N. P., Oleksenko, L. P.
• Format: Article
• Language: English
• Published: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2015
• Subjects: мезопористі Mn /TiO2 порошки; Con; Nin; Mnn та Cun перехідні метали; РФЕС; H2-TПВ; Con; Nin
• Online Access: https://www.cpts.com.ua/index.php/cpts/article/view/323
• Journal Title: Chemistry, Physics and Technology of Surface

Produced by templated sol-gel method mesoporous nanosized titania powders modified with 3d-metal ions have been characterized by XPS and TPR methods. Metal species formed on the titania surface were investigated. The TPR analysis showed that reduction behaviors of the Mn+/TiO2 were strongly affected by the synthesis method, preparation conditions and interactions between the dopant metal and TiO2 matrix. It was found that Ti–O–M– bonds formation during sol-gel synthesis with  applying nonionic triblock copolymer Pluronic P123 as organic template and calcination at 550 °C promoted high-dispersion states of doped 5 % metals. The XPS and TPR showing dopants exist as divalent and trivalent ions for Mn+/TiO2, where M=Co, Ni, Mn, and as monovalent and divalent ions in the case of Cu/TiO2.