Photocatalytic and electrooxidation properties of TiO2 thin films deposited by sol-gel

被引：39
|
作者：
Kenanakis, G. [1 ,2 ]
Vernardou, D. [1 ]
Dalamagkas, A. [1 ]
Katsarakis, N. [1 ,2 ]
机构：
[1] Technol Educ Inst Crete, Ctr Mat Technol & Photon, Sch Appl Technol, Iraklion 71004, Crete, Greece
[2] Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Iraklion 71110, Crete, Greece
来源：
CATALYSIS TODAY | 2015年 / 240卷
关键词：
TiO2; Thin films; Sol-gel technique; Photocatalysis; Octadecanoic acid; Methanol oxidation; METHANOL OXIDATION; PHOTOELECTROCHEMICAL OXIDATION; OPTICAL-PROPERTIES; GLASS; DIOXIDE; ELECTRICITY; PHOTOFUELCELL; DECOMPOSITION; PERFORMANCE; GENERATION;
D O I：
10.1016/j.cattod.2014.05.007
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Anatase TiO2 thin films are deposited on glass using alcoholic solutions at 400-600 degrees C. The effect of film thickness, grain size and annealing temperature on the catalytic activity of the TiO2 thin films is investigated regarding the degradation of octadecanoic (stearic) acid under UV-A light illumination. Specifically, the photocatalytic activity of 150-nm-thick TiO2 thin films deposited on glass at 500 degrees C is quite remarkable, showing the highest octadecanoic acid disappearance rate, i.e., 6.28 x 10(-8) mol/min (formal quantum efficiency= 6.65 x 10(-3)) at 30 min of UV-A light illumination. Moreover, the electrochemical performance of the same sample is evaluated by studying the electrocatalytic oxidation of methanol in an alkaline medium in dark and under UV illumination. Under UV illumination, the methanol electrooxidation is significantly improved, as evidenced by the current-potential measurements presenting a satisfactory incident photon to charge carrier efficiency of 88.3% with a fill factor of 0.51. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：146 / 152
页数：7
相关论文
共 50 条
  • [1] Luminescent properties of sol-gel deposited Eu:TiO2 thin films
    Garcia-Rocha, M
    Conde-Gallardo, A
    Hernandez-Calderon, I
    Palomino-Merino, R
    [J]. MODERN PHYSICS LETTERS B, 2001, 15 (17-19): : 769 - 773
  • [2] OPTICAL AND ELECTRICAL PROPERTIES OF TiO2 THIN FILMS DEPOSITED BY SOL-GEL METHOD
    Bartic, Marilena
    Sacarescu, Liviu
    Harabagiu, Valeria
    [J]. REVUE ROUMAINE DE CHIMIE, 2013, 58 (2-3) : 105 - 111
  • [3] Synthesis, characterization and photocatalytic properties of sol-gel TiO2 films
    Segota, Suzana
    Curkovic, Lidija
    Ljubas, Davor
    Svetlicic, Vesna
    Houra, Ivona Fiamengo
    Tomasic, Nenad
    [J]. CERAMICS INTERNATIONAL, 2011, 37 (04) : 1153 - 1160
  • [4] Photocatalytic properties of TiO2 sol-gel modified nanocomposite films
    Eshaghi, Akbar
    Mozaffarinia, Reza
    Pakshir, Mahmoud
    Eshaghi, Ameneh
    [J]. CERAMICS INTERNATIONAL, 2011, 37 (01) : 327 - 331
  • [5] PHOTOCATALYTIC ACTIVITY OF TIO2 SOL-GEL FILMS
    Stefchev, P.
    Ivanova, K.
    Dikov, H.
    Trapalis, Ch.
    [J]. JOURNAL OF ENVIRONMENTAL PROTECTION AND ECOLOGY, 2006, 7 (04): : 896 - 902
  • [6] Optical and photocatalytic properties of Pt-photodeposited sol-gel TiO2 thin films
    Kim, SC
    Heo, MC
    Hahn, SH
    Lee, CW
    Joo, JH
    Kim, JS
    Yoo, IK
    Kim, EJ
    [J]. MATERIALS LETTERS, 2005, 59 (16) : 2059 - 2063
  • [7] Photocatalytic behavior of TiO2 thin films prepared by sol-gel process
    Yoon, KH
    Noh, JS
    Kwon, CH
    Muhammed, M
    [J]. MATERIALS CHEMISTRY AND PHYSICS, 2006, 95 (01) : 79 - 83
  • [8] Photocatalytic TiO2 sol-gel thin films: Optical and morphological characterization
    Blanco, E.
    Gonzalez-Leal, J. M.
    Ramirez-del Solar, M.
    [J]. SOLAR ENERGY, 2015, 122 : 11 - 23
  • [9] Preparation of TiO2 photocatalytic thin films by inorganic sol-gel method
    Ge, L
    Xu, MX
    Fang, HB
    Lei, E
    [J]. RARE METAL MATERIALS AND ENGINEERING, 2005, 34 : 112 - 115
  • [10] Structural and dielectric properties of TiO2 thin films deposited by the sol-gel method on Si substrates
    Vitanov, P.
    Harizanova, A.
    Ivanova, T.
    [J]. 17TH INTERNATIONAL SUMMER SCHOOL ON VACUUM, ELECTRON, AND ION TECHNOLOGIES (VEIT 2011), 2012, 356
12345