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http://hdl.handle.net/10773/24932
Título: | Synthesis and characterization of efficient TiO2 mesoporous photocatalysts |
Autor: | Ovodok, Evgeni Maltanava, Hanna Poznyak, Sergey Ivanovskaya, Maria Kudlash, Alexander Scharnagl, Nico Tedim, João |
Palavras-chave: | Titanium dioxide Mesoporous materials Photocatalyst |
Data: | 2017 |
Editora: | Elsevier |
Resumo: | Mesoporous TiO2 powder with large surface area and high porosity was prepared via template-free method of heat-stimulated oxidizing destruction of TiC by HNO3. Anatase crystalline phase of as-prepared and annealed at 200−400 °C titania was confirmed by XRD technique. Surface nitrate-nitro groups responsible for high adsorption capacity of the TiO2 powders were studied by FTIR spectroscopy. The annealing temperature can be used as a factor for regulation of titania morphology and structural properties. The rise in the annealing temperature higher than the temperature of nitrate-nitro groups decomposition induces the growth of TiO2 crystallites, decreasing porosity and surface area, the drop of adsorption capacity, and improving photocatalytic activity under UV irradiation. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/24932 |
DOI: | 10.1016/j.matpr.2017.09.062 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2016Materials Today Proceedings.pdf | 637.11 kB | Adobe PDF | Ver/Abrir |
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