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ACS Appl Mater Interfaces


Title:TiO2 thin films prepared via adsorptive self-assembly for self-cleaning applications
Author(s):Xi B; Verma LK; Li J; Bhatia CS; Danner AJ; Yang H; Zeng HC;
Address:"Department of Chemical and Biomolecular Engineering and KAUST-NUS GCR Program, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260"
Journal Title:ACS Appl Mater Interfaces
Year:2012
Volume:20120207
Issue:2
Page Number:1093 - 1102
DOI: 10.1021/am201721e
ISSN/ISBN:1944-8252 (Electronic) 1944-8244 (Linking)
Abstract:"Low-cost controllable solution-based processes for preparation of titanium oxide (TiO(2)) thin films are highly desirable, because of many important applications of this oxide in catalytic decomposition of volatile organic compounds, advanced oxidation processes for wastewater and bactericidal treatments, self-cleaning window glass for green intelligent buildings, dye-sensitized solar cells, solid-state semiconductor metal-oxide solar cells, self-cleaning glass for photovoltaic devices, and general heterogeneous photocatalysis for fine chemicals etc. In this work, we develop a solution-based adsorptive self-assembly approach to fabricate anatase TiO(2) thin films on different glass substrates such as simple plane glass and patterned glass at variable compositions (normal soda lime glass or solar-grade borofloat glass). By tuning the number of process cycles (i.e., adsorption-then-heating) of TiO(2) colloidal suspension, we could facilely prepare large-area TiO(2) films at a desired thickness and with uniform crystallite morphology. Moreover, our as-prepared nanostructured TiO(2) thin films on glass substrates do not cause deterioration in optical transmission of glass; instead, they improve optical performance of commercial solar cells over a wide range of incident angles of light. Our as-prepared anatase TiO(2) thin films also display superhydrophilicity and excellent photocatalytic activity for self-cleaning application. For example, our investigation of photocatalytic degradation of methyl orange indicates that these thin films are indeed highly effective, in comparison to other commercial TiO(2) thin films under identical testing conditions"
Keywords:
Notes:"PubMed-not-MEDLINEXi, Baojuan Verma, Lalit Kumar Li, Jing Bhatia, Charanjit Singh Danner, Aaron James Yang, Hyunsoo Zeng, Hua Chun eng Research Support, Non-U.S. Gov't 2012/01/21 ACS Appl Mater Interfaces. 2012 Feb; 4(2):1093-102. doi: 10.1021/am201721e. Epub 2012 Feb 7"

 
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