Photocatalytic oxidation of organic dyes with nanostructured zinc dioxide modified with silver metals

被引：0
|
作者：
Dongfang Zhang
机构：
[1] Huazhong Agricultural University,College of Science
来源：
Russian Journal of Physical Chemistry A | 2011年 / 85卷
关键词：
nobel metal; electron scavengers; heterogeneous photocatalytic;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Silver-doped nano-ZnO samples with different Ag loadings were prepared by a one-spot solvothermal method. The structure, physico-chemical and optical properties of the products are characterized by using X-ray diffraction (XRD), transmission electron microscope (TEM), energy dispersive X-ray analysis (EDS), diffuse reflectance spectroscopy (DRS) and photoluminescence spectra (PL). The photocatalytic activity of the as-prepared samples was examined by using photocatalytic oxidation of methyl orange (MO) as a model reaction, and the effects of the noble metal content on the photocatalytic activity were investigated. The results indicated that the photocatalytic activity of ZnO nanoparticles can be greatly improved by depositing appropriate amount of noble metal on their surface as electron scavengers. In addition, a key mechanism was proposed in order to account for the enhanced activity. The enhancement for the photocatalytic activities can be attributed to the interaction between Ag particles and ZnO, which made Ag particles act as electron traps to effectively separate the excited electron-hole pairs.
引用
收藏
页码：1416 / 1422
页数：6
相关论文
共 50 条
  • [1] Photocatalytic oxidation of organic dyes with nanostructured zinc dioxide modified with silver metals
    Zhang, Dongfang
    RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2011, 85 (08) : 1416 - 1422
  • [2] Photocatalytic oxidation on nanostructured chalcogenide modified titanium dioxide
    Villarreal, TL
    Bogdanoff, P
    Salvador, P
    Alonso-Vante, N
    SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2004, 83 (04) : 347 - 362
  • [3] Photocatalytic degradation of organic dyes in the presence of nanostructured titanium dioxide
    Kiwaan, H. A.
    Atwee, T. M.
    Azab, E. A.
    El-Bindary, A. A.
    JOURNAL OF MOLECULAR STRUCTURE, 2020, 1200 (1200)
  • [4] Photocatalytic degradation of organic dyes in the presence of nanostructured titanium dioxide: Influence of the chemical structure of dyes
    Khataee, A. R.
    Kasiri, M. B.
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2010, 328 (1-2) : 8 - 26
  • [5] Photodegradation of acridine orange catalyzed by nanostructured titanium dioxide modified with platinum and silver metals
    Qamar, M.
    DESALINATION, 2010, 254 (1-3) : 108 - 113
  • [6] Photocatalytic Properties of Tin Dioxide Doped with Chromium(III), Silver and Zinc Compounds in the Oxidation of Organic Substrates by the Action of Visible Light
    S. V. Khalameida
    M. N. Samsonenko
    V. V. Sydorchuk
    V. L. Starchevskyy
    O. I. Zakutevskyy
    O. Yu. Khyzhun
    Theoretical and Experimental Chemistry, 2017, 53 : 40 - 46
  • [7] PHOTOCATALYTIC PROPERTIES OF TIN DIOXIDE DOPED WITH CHROMIUM(III), SILVER AND ZINC COMPOUNDS IN THE OXIDATION OF ORGANIC SUBSTRATES BY THE ACTION OF VISIBLE LIGHT
    Khalameida, S. V.
    Samsonenko, M. N.
    Sydorchuk, V. V.
    Starchevskyy, V. L.
    Zakutevskyy, O. I.
    Khyzhun, O. Yu.
    THEORETICAL AND EXPERIMENTAL CHEMISTRY, 2017, 53 (01) : 40 - 46
  • [8] Visible Light Photocatalytic Oxidation of Ethanol Vapor on Titanium Dioxide Modified with Noble Metals
    Kolinko, P. A.
    Selishchev, D. S.
    Kozlov, D. V.
    THEORETICAL AND EXPERIMENTAL CHEMISTRY, 2015, 51 (02) : 96 - 103
  • [9] Visible Light Photocatalytic Oxidation of Ethanol Vapor on Titanium Dioxide Modified with Noble Metals
    P. A. Kolinko
    D. S. Selishchev
    D. V. Kozlov
    Theoretical and Experimental Chemistry, 2015, 51 : 96 - 103
  • [10] Entrapment of organic molecules within metals: Dyes in silver
    Behar-Levy, H
    Avnir, D
    CHEMISTRY OF MATERIALS, 2002, 14 (04) : 1736 - 1741
12345