Photocatalytic activity of TiO2 thin films by hydrogen DC plasma

被引：36
|
作者：
Mohammadizadeh, M. R. [1 ]
Bagheri, M. [1 ]
Aghabagheri, S. [1 ]
Abdi, Y. [2 ]
机构：
[1] Univ Tehran, Dept Phys, SRL, Tehran, Iran
[2] Univ Tehran, Dept Phys, Nanophys Res Lab, Tehran, Iran
来源：
APPLIED SURFACE SCIENCE | 2015年 / 350卷
关键词：
Titanium dioxide; Hydrogen doping; Thin films; Photocatalysis; Hydrogenation; SUPERHYDROPHILICITY PROPERTIES; SURFACE SCIENCE; 1ST-PRINCIPLES; NANOCRYSTALS; DEFECTS; NANOPARTICLES; NANOMATERIALS; ENHANCEMENT; TEMPERATURE; IMPROVEMENT;
D O I：
10.1016/j.apsusc.2015.03.196
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Thin layers of anatase titanium dioxide were coated on glass by spray pyrolysis method. The layers were hydrogenated by DC plasma from room temperature up to 350 degrees C. Hydrogen plasma treatment at low temperatures, leads to decrease the surface roughness, while surface roughness is increased by enhancing plasma temperature. Layers' band gap was decreased 0.13 eV by plasma treatment at highest temperature. Hydrophilicity and photocatalytic properties of the layers under plasma treatment at 150 and 200 degrees C were improved noticeably. However, plasma treatment at temperatures above 200 degrees C was lead to decrease hydrophilicity and photocatalytic activity of TiO2 layers. The reason seems formation of oxygen vacancies in the interior layers that act as charge carriers' recombination centers. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：43 / 49
页数：7
相关论文
共 50 条
  • [1] The structure and photocatalytic activity of TiO2 thin films deposited by dc magnetron sputtering
    Yang, W. J.
    Hsu, C. Y.
    Liu, Y. W.
    Hsu, R. Q.
    Lu, T. W.
    Hu, C. C.
    SUPERLATTICES AND MICROSTRUCTURES, 2012, 52 (06) : 1131 - 1142
  • [2] Photocatalytic activity of dc magnetron sputter deposited amorphous TiO2 thin films
    Eufinger, K.
    Poelman, D.
    Poelman, H.
    De Gryse, R.
    Marin, G. B.
    APPLIED SURFACE SCIENCE, 2007, 254 (01) : 148 - 152
  • [3] Photocatalytic activity of TiO2 nanodome thin films
    Grandcolas, M.
    Yonge, L.
    Van Overschelde, O.
    Snyders, R.
    CERAMICS INTERNATIONAL, 2014, 40 (08) : 12939 - 12946
  • [4] Photocatalytic activity of nanostructured TiO2 thin films prepared by dc magnetron sputtering method
    Zheng, SK
    Wang, TM
    Xiang, G
    Wang, C
    VACUUM, 2001, 62 (04) : 361 - 366
  • [5] Silver modification of TiO2 thin films and their photocatalytic activity
    Ren Xuechang
    Shi Zaifeng
    Kong Lingren
    CHINESE JOURNAL OF CATALYSIS, 2006, 27 (09) : 815 - 822
  • [6] Photocatalytic activity of hydrophobized mesoporous thin films of TiO2
    Wark, M
    Tschirch, J
    Bartels, O
    Bahnemann, D
    Rathousky, J
    MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 84 (1-3) : 247 - 253
  • [7] Enhanced photocatalytic activity of TiO2 thin films on plasma-pretreated organic polymers
    Camara, R. M.
    Crespo, E.
    Portela, R.
    Suarez, S.
    Bautista, L.
    Gutierrez-Martin, F.
    Sanchez, B.
    CATALYSIS TODAY, 2014, 230 : 145 - 151
  • [8] Effect of microstructure and crystallinity on the photocatalytic activity of TiO2 thin films deposited by dc magnetron sputtering
    Eufinger, K.
    Poelman, D.
    Poelman, H.
    De Gryse, R.
    Marin, G. B.
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (17) : 5232 - 5238
  • [9] TiO2 thin-films on polymer substrates and their photocatalytic activity
    Yang, JH
    Han, YS
    Choy, JH
    THIN SOLID FILMS, 2006, 495 (1-2) : 266 - 271
  • [10] Effect of Annealing Temperature on the Photocatalytic Activity of TiO2 Thin Films
    Lin, C. -P.
    Chen, H.
    Nakaruk, A.
    Koshy, P.
    Sorrell, C. C.
    10TH ECO-ENERGY AND MATERIALS SCIENCE AND ENGINEERING SYMPOSIUM, 2013, 34 : 627 - 636
12345