A nanoparticle assembly method for the production of crystalline ordered mesoporous titanium oxide/carbon composites

作者：Liu, Dan; Lei, Jia-heng^*; Guo, Li-ping; Deng, Ke-jian

来源：Microporous and Mesoporous Materials, 2011, 139(1-3): 87-93.

DOI：10.1016/j.micromeso.2010.10.023

• Nanoparticle assembly
• Ordered mesoporous carbons
• Titanium oxides
• Composites

We demonstrate a simple and reproducible method to prepare thermally stable, crystalline mesoporous Ti oxide/carbon composites. The composites were obtained using titania nanoparticles as inorganic precursors, phenolic resols as carbon sources, and triblock copolymer F127 as a template based on the solvent evaporation-induced self-assembly process. The use of stable titania nanoparticles favored the reproducible preparation of mesoporous Ti-C composites over a wide range of Ti oxide/carbon ratios without the control of atmospheric humidity. Various analysis techniques have been used to investigate the pore structure and crystallinity as a function of synthesis conditions. The resultant composites have an ordered 20 hexagonal mesostructure with high surface areas (200-800 m(2) g(-1)). In addition to the calcination temperature, the carbon content also has significant effect on the crystalline transformation of titanium species.

• 出版日期2011-3
• 单位武汉理工大学; 中南民族大学