Biomimetic formation of Titania Thin Films: Effect of Amino Acids on the Deposition Process

被引:11
|
作者
Durupthy, Olivier [1 ]
Jeurgens, Lars P. H. [2 ]
Bill, Joachim [3 ]
机构
[1] UPMC Univ Paris 06, Coll France, Lab Chim Matiere Condensee Paris, UMR CNRS 7574, F-75005 Paris, France
[2] Max Planck Inst Met Res, D-70569 Stuttgart, Germany
[3] Univ Stuttgart, Inst Mat Wissensch, D-70569 Stuttgart, Germany
关键词
titanium dioxide; amino acids; bioinspired synthesis; film; SELF-ASSEMBLED MONOLAYERS; RAY PHOTOELECTRON-SPECTROSCOPY; AQUEOUS-SOLUTIONS; PARTICLE GROWTH; LOW-TEMPERATURE; NANOCRYSTALLINE TIO2; SURFACE-MORPHOLOGY; ANATASE TIO2; ZERO CHARGE; OXIDE-FILMS;
D O I
10.1021/am2001746
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Different types of amino acids have been used as additives to control the aqueous deposition of titanium dioxide thin films on single-crystal Si wafers. Thin titania films can be obtained through a chemical bath deposition (CBD) process using TiCl4 as a precursor in an aqueous solution at temperatures below 100 degrees C. The addition of amino acids to the deposition solution was shown to reduce the thickness and roughness of the films and to increase their density. These protein building blocks were employed to modify the deposition rate as well as the size of aggregates that form the film. The thickness, crystallinity, morphology and composition of the grown films were characterized by a variety of techniques, including XRD, XPS, AFM and SEM. The consequences of the type of the amino acid additive (and its concentration in the solution) on the microstructural evolutions of the deposed films are thus revealed and discussed on the basis of the organic inorganic interactions in solution and at the film surface.
引用
收藏
页码:1624 / 1632
页数:9
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