Photocatalytic and Photoelectrocatalytic Degradation of the Explosive RDX by TiO2 Thin Films Prepared by CVD and Anodic Oxidation of Ti

被引：9
作者：
Tian, Fang [1 ]
Hitchman, Michael L. [1 ]
Shamlian, Sarkis H. [1 ]
机构：
[1] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland
来源：
CHEMICAL VAPOR DEPOSITION | 2012年 / 18卷 / 4-6期
关键词：
Photocatalysis; Photoelectrocatalysis; RDX; Titanium dioxide; ELECTROCHEMICALLY ASSISTED PHOTOCATALYSIS; RAMAN-SPECTRUM; ANATASE; WATER;
D O I：
10.1002/cvde.201207000
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Two kinds of TiO2 films prepared by CVD and by anodization of titanium mesh are compared for the photocatalytic (PC) and photoelectrocatalytic (PEC) degradation of RDX aqueous solutions illuminated under a 200?W UV light. The PC activity of anodically formed TiO2 is lower than that with CVD-produced TiO2. The PC efficiencies of degradation of RDX with both anodized and CVD films are improved by applying a potential of 1?V versus saturated calomel electrode (SCE), with up to 95% of RDX being destroyed in two hours by a CVD-produced TiO2 film, and 81% by anodized TiO2. Chemical analysis shows that during RDX degradation, nitrite is the first mineralized product which is further oxidized to nitrate.
引用
收藏
页码：112 / 120
页数：9
相关论文
共 22 条
  • [1] Andreu R. K., 1975, P 30 IND WAST C
  • [2] Berdahl P., 2008, CEC5002007112
  • [3] Degradation of RDX by various advanced oxidation processes: I. Reaction rates
    Bose, P
    Glaze, WH
    Maddox, DS
    [J]. WATER RESEARCH, 1998, 32 (04) : 997 - 1004
  • [4] Degradation of RDX by various advanced oxidation processes: II. Organic by-products
    Bose, P
    Glaze, BH
    Maddox, DS
    [J]. WATER RESEARCH, 1998, 32 (04) : 1005 - 1018
  • [5] Photoinduced reactivity of titanium dioxide
    Carp, O
    Huisman, CL
    Reller, A
    [J]. PROGRESS IN SOLID STATE CHEMISTRY, 2004, 32 (1-2) : 33 - 177
  • [6] Recent developments in photocatalytic water treatment technology: A review
    Chong, Meng Nan
    Jin, Bo
    Chow, Christopher W. K.
    Saint, Chris
    [J]. WATER RESEARCH, 2010, 44 (10) : 2997 - 3027
  • [7] Egerton T A., 2004, Advanced oxidation processesfor water and wastewater treatment. Ed
  • [8] Does photoelectrocatalysis by TiO2 work?
    Egerton, Terry A.
    [J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2011, 86 (08) : 1024 - 1031
  • [9] Harbeke G., 1985, Polycrystalline Semiconductors: Physical Properties and Applications: Proceedings of the International School of Materials Science and Technology at the Ettore Majorana Centre, Erice, Italy, July 1-15, 1984
  • [10] TiO2 photocatalysis:: A historical overview and future prospects
    Hashimoto, K
    Irie, H
    Fujishima, A
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2005, 44 (12): : 8269 - 8285
123