Effects of Template and Precursor Chemistry on Structure and Properties of Mesoporous TiO2 Thin Films

Journal Article · Tue Oct 12 00:00:00 EDT 2004 · Langmuir, 20(21):9095-9102

DOI:https://doi.org/10.1021/la0486279· OSTI ID:962057

Li, Xiaohong S; Fryxell, Glen E; Birnbaum, Jerome C; Wang, Chong M

Mesoporous TiO2 thin films were synthesized by sol-gel processing using an aqueous-based, inexpensive and environmentally friendly precursor and cationic surfactants as templates. The films were prepared by spin-coating on glass substrates followed by calcination to remove the surfactant. N2 sorption, x-ray diffraction and TEM were used to characterize the porosity, pore size and pore structure before and after calcination. Films were found to have wormlike pore structures after calcination. These results show that the mesostructure and porosity of the thin films can be controlled by the surfactant template chemistry such as surfactant/Ti ratio, pH, and the speed of solvent removal.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 962057
• Report Number(s): PNNL-SA-38936; 2127
• Journal Information: Langmuir, 20(21):9095-9102, Journal Name: Langmuir, 20(21):9095-9102 Journal Issue: 21 Vol. 20; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Environmental Molecular Sciences Laboratory
PORE STRUCTURE
POROSITY
PRECURSOR
SOL-GEL PROCESS
SPIN-ON COATING
SUBSTRATES
THIN FILMS
TITANIUM OXIDES