Photocatalytic TiO2 thin films synthesized by the post-discharge of an RF atmospheric plasma torch

被引:25
作者
Collette, Stephanie [1 ]
Hubert, Julie [1 ]
Batan, Abdelkrim [1 ]
Baert, Kitty [2 ]
Raes, Marc [2 ]
Vandendael, Isabelle [2 ]
Daniel, Alain [3 ]
Archambeau, Catherine [3 ]
Terryn, Herman [2 ]
Reniers, Francois [1 ]
机构
[1] Univ Libre Bruxelles, Serv Chim Analyt & Chim Interfaces CHANI, Blvd Triomphe 2, B-1050 Brussels, Belgium
[2] Vrije Univ Brussel, Dept Electrochem & Surface Engn SURF, Pl Laan 2, B-1050 Brussels, Belgium
[3] CRM Grp Adv Coatings & Construct Solut AC&CS, Quartier Polytech 3, Allee Innovat,1,B57, B-4000 Liege, Belgium
关键词
Titanium dioxide; Plasma deposition; Atmospheric post-discharge; Photocatalysis; CHEMICAL-VAPOR-DEPOSITION; TITANIUM-DIOXIDE; METHYLENE-BLUE; IN-SITU; DEGRADATION; BIOCOMPATIBILITY; ANATASE; HYDROPHILICITY; ADSORPTION; RUTILE;
D O I
10.1016/j.surfcoat.2016.01.049
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Thin films of titanium oxide (TiO2) are synthesized at room temperature by the post-discharge of an RF atmospheric plasma torch supplied with argon and oxygen. Vapours of titanium tetraisopropoxide (TTIP) precursor are injected in the post-discharge by an argon flow rate bubbling in the liquid precursor. Without any external substrate heating, the coatings are amorphous and characterized by a thin film upon which agglomerates can be observed. The annealing of the coatings at 450 degrees C is efficient to (partially) crystallize the TiO2 since bands characteristic of the TiO2 anatase structure are observed in Raman spectra. The films are super-hydrophilic and present excellent photocatalytic activity; two properties of particular interest for self-cleaning applications. Nevertheless, annealed coating presents a higher photocatalytic activity. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:172 / 178
页数:7
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