SHAO Xia-1, 2, Liu-Wen-Cong-1, Zhang- Rui-2, Bo- Feng-2. A comparative study of TiO2-C hybrid aerogels from TiCl4 or Ti(OBu)4 for photocatalytic methylene blue degradation. New Carbon Mater., 2013, 28(5): 378-384.
Citation:
SHAO Xia-1, 2, Liu-Wen-Cong-1, Zhang- Rui-2, Bo- Feng-2. A comparative study of TiO2-C hybrid aerogels from TiCl4 or Ti(OBu)4 for photocatalytic methylene blue degradation. New Carbon Mater., 2013, 28(5): 378-384.
SHAO Xia-1, 2, Liu-Wen-Cong-1, Zhang- Rui-2, Bo- Feng-2. A comparative study of TiO2-C hybrid aerogels from TiCl4 or Ti(OBu)4 for photocatalytic methylene blue degradation. New Carbon Mater., 2013, 28(5): 378-384.
Citation:
SHAO Xia-1, 2, Liu-Wen-Cong-1, Zhang- Rui-2, Bo- Feng-2. A comparative study of TiO2-C hybrid aerogels from TiCl4 or Ti(OBu)4 for photocatalytic methylene blue degradation. New Carbon Mater., 2013, 28(5): 378-384.
School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China|2.School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China
Funds:
The key subject of Materials processing projects(J51504); The National Natural Science Foundation of China(50872033); The Capacity Buiding Program of Shanghai local universities(12160503600).
TiO2-C hybrid aerogels were obtained by a one-pot sol-gel method, followed by supercritical drying and pyrolysis, using resorcinol (R) and furfural(F) as carbon sources, and TiCl4or Ti(OBu)4 as the TiO2 precursor. The hybrid aerogels were characterized by XRD, HR-TEM and N2 adsorption. The photocatalytic activity of the samples was evaluated based on the conversion of methylene blue (MB) under UV light. Results showed that the type of precursor and the mass ratio of TiO2 to carbon influenced the surface area and MB conversion. The TiO2-C hybrid aerogels using TiCl4 as TiO2 precursor had a higher surface area and a better photocatalytic activity than those using Ti(OBu)4 as precursor under otherwise identical conditions. The best sample was obtained when TiCl4 was used and the TiO2 content was 40%. This had the largest average pore size of 7.8 nm, the highest mesopore volume of 0.40 cm3/g and the highest MB conversion of 99.6% under an ultraviolet exposure for 180 min.
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