| Revista: | Anais da Academia Brasileira de Ciencias |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000436338 |
| ISSN: | 0001-3765 |
| Autores: | Marques, Thalles M.F1 Morais, Reinaldo N2 Nobre, Francisco X3 Rocha, Jardel M2 Ghosh, Anupama5 Soares, Thiago André S4 Viana, Bartolomeu C5 Machado, Giovanna4 Costa, Jean Claudio S2 Matos, José M.E. de2 |
| Instituciones: | 1Instituto Federal de Educacao Ciencia e Tecnologia do Piaui, Campus Sao Joao do Piaui, Sao Joao do Piaui, Piaui. Brasil 2Universidade Federal do Piaui, Departamento de Quimica, Teresina, Piaui. Brasil 3Instituto Federal de Educacao, Ciencia e Tecnologia do Amazonas, Campus Coari, Coari, Amazonas. Brasil 4Centro de Tecnologias Estrategicas do Nordeste, Recife, Pernambuco. Brasil 5Universidade Federal do Piaui, Departamento de Fisica, Teresina, Piaui. Brasil |
| Año: | 2019 |
| Volumen: | 91 |
| Número: | 4 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Aplicado, descriptivo |
| Resumen en inglés | Protonated titanate nanotubes (HTiNts) were synthesized using the hydrothermal method, followed by proton exchange with acid. Gold nanoparticles decorated titanate nanotubes (AuHTiNts) were obtained by the reduction of AuCl4- under vigorous stirring with an aqueous solution of HTiNts containing 1 wt% of ascorbic acid. To investigate the surface structural chemistry of the titanate and AuHTiNts, the following characterization methods were used: scanning and transmission electron microscopy, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, Raman spectroscopy and X-ray photo-electron spectroscopy. The mean internal and external diameters for titanate nanotubes were found to be 5.46 ± 0.08 nm and 8.42 ± 0.03 nm, respectively, whereas the mean diameter of gold nanoparticles was measured to be 9.68 nm ± 0.03 nm. The as-synthesized AuHTiNts was used as photocatalyst in hydrogen production from glycerol as a sacrificial agent. The enhancement in the production of hydrogen, using the heterogeneous AuHTiNts catalysts, can be attributed to the intrinsic catalytic potential of gold as well as its interactions with titanate nanostructure |
| Disciplinas: | Química |
| Palabras clave: | Ingeniería química, Producción de hidrógeno, Catálisis, Nanotubos de titanato, Nanopartículas de oro, Glicerol |
| Keyword: | Chemical engineering, Hydrogen production, Titanate nanotubes, Gold nanoparticles, Catalysis, Glycerol |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
