Low Frequency Ultrasonication of Degussa P25 TiO2 and Its Superior Photocatalytic Properties

被引:12
|
作者
Vijayarangamuthu, K. [1 ]
Han, EunJi [1 ]
Jeon, Ki-Joon [1 ]
机构
[1] Inha Univ, Dept Environm Engn, Inchon 402751, South Korea
基金
新加坡国家研究基金会;
关键词
P25; TiO2; Ultrasonication; Photocatalytic; TEM; ANATASE; RUTILE; WATER; POWDER; GREEN; P-25;
D O I
10.1166/jnn.2016.10994
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report the simple and effective method for enhancing the photocatalytic properties of Degussa P25 TiO2 by low frequency ultrasonication. The improvement in the crystallinity of ultrasonicated TiO2 was confirmed by the X-ray diffraction and Raman spectroscopy studies. Further, the X-ray photoelectron spectroscopy was utilized to study the changes in chemical nature and band edge due to the effect of ultrasonication and H2O2 solvent. The transmission electron microscope (TEM) was used to analysis the surface distortion. The Moire fringes in TEM were examined to understand the partial transformation of amorphous to crystalline anatase structure and overlapping of rutile over anatase crystal. The photocatalytic results indicated improvement in the degradation of methylene blue dye. The degradation efficiency was estimated to be 86% for ultrasonicated TiO2, which is higher as compared to 40% of P25. The rate constant values revealed four times superior degradation property of ultrasonicated TiO2. The improvement in the photocatalytic efficiency was correlated to the formation of rutile/anatase TiO2 aggregation and its consequences on electronhole recombination.
引用
收藏
页码:4399 / 4404
页数:6
相关论文
共 50 条
  • [1] An improvement of photocatalytic activity of TiO2 Degussa P25 powder
    Bessergenev, V. G.
    Mateus, M. C.
    Botelho do Rego, A. M.
    Hantusch, M.
    Burkel, E.
    [J]. APPLIED CATALYSIS A-GENERAL, 2015, 500 : 40 - 50
  • [2] Influence of gamma-irradiation on the photocatalytic activity of Degussa P25 TiO2
    Kralchevska, R.
    Milanova, M.
    Tsvetkov, M.
    Dimitrov, D.
    Todorovsky, D.
    [J]. JOURNAL OF MATERIALS SCIENCE, 2012, 47 (12) : 4936 - 4945
  • [3] Influence of gamma-irradiation on the photocatalytic activity of Degussa P25 TiO2
    R. Kralchevska
    M. Milanova
    M. Tsvetkov
    D. Dimitrov
    D. Todorovsky
    [J]. Journal of Materials Science, 2012, 47 : 4936 - 4945
  • [4] Photocatalytic Degradation of Methyl Orange over Metalloporphyrins Supported on TiO2 Degussa P25
    Zhou, Xian-Tai
    Ji, Hong-Bing
    Huang, Xing-Jiao
    [J]. MOLECULES, 2012, 17 (02) : 1149 - 1158
  • [5] A comparative study of the activity of TiO2 Wackherr and Degussa P25 in the photocatalytic degradation of picloram
    Abramovic, Biljana
    Sojic, Daniela
    Despotovic, Vesna
    Vione, Davide
    Pazzi, Marco
    Csanadi, Janos
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 105 (1-2) : 191 - 198
  • [6] Comparison of Photocatalytic Performance of Degussa TiO2 P25 and P90 in Gas Phase Photocatalytic Reactor
    In, Su Il
    [J]. ASIAN JOURNAL OF CHEMISTRY, 2011, 23 (06) : 2629 - 2631
  • [7] Enhanced photocatalytic activity for degrading Rhodamine B solution of commercial Degussa P25 TiO2 and its mechanisms
    Qin, Xu
    Jing, Liqiang
    Tian, Guohui
    Qu, Yichun
    Feng, Yujie
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 172 (2-3) : 1168 - 1174
  • [8] Kinetic Modeling of Photocatalytic Degradation of Alachlor using TiO2 (Degussa P25) in Aqueous Solution
    Malini, Thanikachallam Pushpa
    Ramesh, Atmakuru
    Selvi, Johnpeter Arockia
    Arthanareeswari, Maruthapillai
    Kamaraj, Palanisami
    [J]. ORIENTAL JOURNAL OF CHEMISTRY, 2016, 32 (06) : 3165 - 3173
  • [9] Degussa P25 TiO2 modified with H2O2 under microwave treatment to enhance photocatalytic properties
    Han, Eunji
    Vijayarangamuthu, K.
    Youn, Jong-sang
    Park, Young-Kwon
    Jung, Sang-Chul
    Jeon, Ki-Joon
    [J]. CATALYSIS TODAY, 2018, 303 : 305 - 312
  • [10] Explaining the enhanced photocatalytic activity of Degussa P25 mixed-phase TiO2 using EPR
    Hurum, DC
    Agrios, AG
    Gray, KA
    Rajh, T
    Thurnauer, MC
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (19): : 4545 - 4549