Influence of the method of platinum deposition on activity and stability of Pt/TiO2 photocatalysts in the photocatalytic oxidation of dimethyl methylphosphonate

被引：60
|
作者：
Kozlova, Ekaterina A. [1 ]
Lyubina, Tatyana P. [1 ]
Nasalevich, Maxim A. [1 ]
Vorontsov, Alexander V. [1 ]
Miller, Alexander V. [1 ]
Kaichev, Vasily V. [1 ]
Parmon, Valentin N. [1 ]
机构：
[1] Novosibirsk State Univ, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 07期
关键词：
Photocatalytic oxidation; Pt/TiO2; Organophosphorous compounds; CWA; TITANIUM-DIOXIDE; VAPOR-PHASE; TIO2; HYDROGENATION; ADSORPTION; ETHANOL; ACETONE; OXYGEN; ESCA;
D O I：
10.1016/j.catcom.2010.12.007
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：
Gas-phase photocatalytic oxidation of organophosphorous compound dimethyl methylphosphonate was carried out in a flow reactor on platinized TiO2 Degussa P25. Platinization was performed by soft chemical reduction (SCR) and photodeposition (PD) techniques. Dispersion and chemical state of platinum were studied by X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM). It was found that SCR gave mostly metallic platinum, whereas PD gave only Pt2+ form. During the oxidation, the state of platinum on a SCR catalyst remained unchanged, which determined its good stability. The catalyst with PD platinum deactivated quite fast due to aggregation of Pt particles. The SCR technique was found to provide better stability and activity. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：597 / 601
页数：5
相关论文
共 50 条
  • [1] Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites
    Djokic, Veljko R.
    Marinkovic, Aleksandar D.
    Mitric, Miodrag
    Uskokovic, Petar S.
    Petrovic, Rada D.
    Radmilovic, Velimir R.
    Janackovic, Djordje T.
    CERAMICS INTERNATIONAL, 2012, 38 (08) : 6123 - 6129
  • [2] Catalytic vapour-phase hydrolysis and photocatalytic oxidation of dimethyl methylphosphonate on a TiO2 surface
    Trubitsyn, DA
    Vorontsov, AV
    MENDELEEV COMMUNICATIONS, 2004, 14 (05) : 197 - 199
  • [3] Mapping the Photocatalytic Activity and Ecotoxicology of Au, Pt/TiO2 Composite Photocatalysts
    Hampel, Boglarka
    Kovacs, Gabor
    Czekes, Zsolt
    Hernadi, Klara
    Danciu, Virginia
    Ersen, Ovidiu
    Girleanu, Maria
    Focsan, Monica
    Baia, Lucian
    Pap, Zsolt
    ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (10): : 12993 - 13006
  • [4] Study on preparation and photocatalytic performance of Ag/TiO2 and Pt/TiO2 photocatalysts
    Li, Chia-Hsin
    Hsieh, Yung-Hsu
    Chiu, Wan-Ting
    Liu, Chin-Chuan
    Kao, Chao-Lang
    SEPARATION AND PURIFICATION TECHNOLOGY, 2007, 58 (01) : 148 - 151
  • [5] Effect of calcination on the photocatalytic activity and stability of TiO2 photocatalysts modified with APTES
    Sienkiewicz, Agnieszka
    Wanag, Agnieszka
    Kusiak-Nejman, Ewelina
    Ekiert, Ewa
    Rokicka-Konieczna, Paulina
    Morawski, Antoni W.
    JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2021, 9 (01)
  • [6] Acceleration of Photocatalytic Remote Oxidation by Deposition of Pt Nanoparticles onto TiO2
    Yang, Fei
    Kubo, Wakana
    Sakai, Nobuyuki
    Tatsuma, Tetsu
    ELECTROCHEMISTRY, 2010, 78 (02) : 161 - 164
  • [7] The influence of carriers on the structure and photocatalytic activity of TiO2/diatomite composite photocatalysts
    Sun, Zhiming
    Yan, Yang
    Zhang, Guangxin
    Wu, Zhaoyang
    Zheng, Shuilin
    ADVANCED POWDER TECHNOLOGY, 2015, 26 (02) : 595 - 601
  • [8] The influence of carriers on the structure and photocatalytic activity of TiO2/diatomite composite photocatalysts
    School of Chemical and Environmental Engineering, China University of Mining and Technology , Beijing
    100083, China
    不详
    450006, China
    Adv Powder Technol, 2 (595-601):
  • [9] Influence of Water on the Oxidation of NO on Pd/TiO2 Photocatalysts
    Hernandez Rodriguez, M. J.
    Pulido Melian, E.
    Arana, J.
    Navio, J. A.
    Gonzalez Diaz, O. M.
    Santiago, Dunia E.
    Dona Rodriguez, J. M.
    NANOMATERIALS, 2020, 10 (12) : 1 - 16
  • [10] Cyclohexane photocatalytic oxidation on Pt/TiO2 catalysts
    Murcia, J. J.
    Hidalgo, M. C.
    Navio, J. A.
    Vaiano, V.
    Sannino, D.
    Ciambelli, P.
    CATALYSIS TODAY, 2013, 209 : 164 - 169
12345