PMID- 20356197 OWN - NLM STAT- MEDLINE DCOM- 20100518 LR - 20131121 IS - 1944-8244 (Print) IS - 1944-8244 (Linking) VI - 2 IP - 2 DP - 2010 Feb TI - Transparent, well-aligned TiO(2) nanotube arrays with controllable dimensions on glass substrates for photocatalytic applications. PG - 498-503 LID - 10.1021/am900726k [doi] AB - Transparent, well-aligned TiO(2) nanotube arrays (NTAs) with controllable dimensions are grown on glass substrates via atomic layer deposition (ALD) of TiO(2) onto free-standing porous anodic alumina (PAA) templates. Photodegradation of aqueous methylene blue (MB) solution and solid stearic acid (SA) film using TiO(2) NTAs of various wall thicknesses are investigated. The Pd functionalized TiO(2) NTAs, with a wall thickness of 15 nm and height of 200 nm, has the highest photodegradation efficiency at 76% after 4 h of UV irradiation. These functionalized NTAs are able to photodegrade MB molecules completely as no obvious demethylated byproducts are observed during the process. It also demonstrates excellent photocatalytic activity for solid contaminants such as SA film. By using the ALD technique, the nanotube wall thickness can be precisely controlled so that it is sufficiently thin to be transparent while sufficiently thick for excellent photocatalytic performances. The transparent TiO(2) NTAs on glass substrates with excellent photocatalytic properties might have potential applications in self-cleaning coating, transparent electronics, and solar cells. FAU - Tan, Lee Kheng AU - Tan LK AD - Institute of Materials Research and Engineering, Singapore. FAU - Kumar, Manippady K AU - Kumar MK FAU - An, Wen Wen AU - An WW FAU - Gao, Han AU - Gao H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 RN - 15FIX9V2JP (titanium dioxide) RN - D1JT611TNE (Titanium) SB - IM MH - Adsorption MH - Catalysis/radiation effects MH - Glass/*chemistry MH - Light MH - Materials Testing MH - Nanotechnology/methods MH - Nanotubes/*chemistry/radiation effects/*ultrastructure MH - Particle Size MH - Photochemistry/*methods MH - Titanium/*chemistry/radiation effects EDAT- 2010/04/02 06:00 MHDA- 2010/05/19 06:00 CRDT- 2010/04/02 06:00 PHST- 2010/04/02 06:00 [entrez] PHST- 2010/04/02 06:00 [pubmed] PHST- 2010/05/19 06:00 [medline] AID - 10.1021/am900726k [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2010 Feb;2(2):498-503. doi: 10.1021/am900726k.