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Titanium Oxide Thin Films on Organic Interfaces through Biomimetic Processing
Author(s) -
Baskaran Suresh,
Song Lin,
Liu Jun,
Chen Yuan L.,
Graff Gordon L.
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02347.x
Subject(s) - materials science , titanium , chemical engineering , aqueous solution , nanocrystalline material , amorphous solid , thin film , titanium oxide , silicon , oxide , membrane , nanotechnology , metallurgy , organic chemistry , chemistry , biochemistry , engineering
Titanium oxide (TiO 2 ) thin films have been deposited on silicon, glass, and plastic substrates by destabilization of an aqueous titanium lactate solution at low temperatures (<100°C). The process uses a commercially available, low‐cost precursor and is simple to perform; it involves only control of pH in aqueous, chelated titanium solutions. With this solution technique, high deposition rates (>50 nm/min), film thickness (>100 nm), and excellent film uniformity have been obtained. Uniform coatings can be applied on complex‐shaped polymeric substrates and porous membranes. Films can be formed on both sulfonated and untreated polymeric surfaces. As‐deposited films on plastic substrates consist of amorphous, hydrated TiO 2 . On sulfonated self‐assembled monolayers on silicon substrates, nanocrystalline TiO 2 films have been formed. The deposited films exhibit strong ultraviolet (UV) absorption with excellent transmission in the visible wavelength range, which indicates that the coatings may be useful as protective UV blockers for polymeric materials.