Please use this identifier to cite or link to this item:
|Title:||A two-step sol-gel method for synthesis of nanoporous TiO 2|
Diniz Da Costa, J.C.
Wide Band Gap Semiconductor
|Citation:||Kartini, I., Meredith, P., Zhao, X.S., Diniz Da Costa, J.C., Lu, G.Q. (2004-03). A two-step sol-gel method for synthesis of nanoporous TiO 2. Journal of Nanoscience and Nanotechnology 4 (3) : 270-274. ScholarBank@NUS Repository.|
|Abstract:||This article reports a study of the effects of synthesis parameters on the preparation and formation of mesoporous titania nanopowders by employing a two-step sol-gel method. These materials displayed crystalline domains characteristic of anatase. The first step of the process involved the hydrolysis of titanium isopropoxide in a basic aqueous solution mediated by neutral surfactant. The solid product obtained from step 1 was then treated in an acidified ethanol solution containing the same titanium precursor to thicken the pore walls. Low pH and higher loading of the Ti precursor in step 2 produced better mesoporosity and crystallinity of titanium dioxide polymorphs. The resultant powder exhibited a high surface area (73.8 m 2/g) and large pore volume (0.17 cm 3/g) with uniform mesopores. These materials are envisaged to be used as precursors for mesoporous titania films as a wide band gap semiconductor in dye-sensitized nanocrystalline TiO 2 solar cells.|
|Source Title:||Journal of Nanoscience and Nanotechnology|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 10, 2018
WEB OF SCIENCETM
checked on May 15, 2018
checked on Jun 29, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.