IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v14y2017i12p1471-d120669.html
   My bibliography  Save this article

Characterization and Computation of Yb/TiO 2 and Its Photocatalytic Degradation with Benzohydroxamic Acid

Author

Listed:
  • Xianping Luo

    (Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
    Post-Doctoral Scientific Research Workstation of Western Mining Co. Ltd., Xining 810001, China
    Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Ganzhou 341000, China)

  • Sipin Zhu

    (Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
    Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Ganzhou 341000, China)

  • Junyu Wang

    (Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
    Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Ganzhou 341000, China)

  • Chunying Wang

    (Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
    Post-Doctoral Scientific Research Workstation of Western Mining Co. Ltd., Xining 810001, China
    Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control, Ganzhou 341000, China)

  • Min Wu

    (Post-Doctoral Scientific Research Workstation of Western Mining Co. Ltd., Xining 810001, China)

Abstract

Yb-doped TiO 2 (Yb/TiO 2 ) compositions were synthesized by sol-gel method, and the prepared materials were characterized by X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse-reflectance spectrum (UV-Vis DRS), transmission electron microscope (TEM) and high resolution transmission electron microscope (HRTEM), energy dispersive spectrometer (EDS), and N 2 adsorption. A beneficiation reagent of benzohydroxamic acid (BHA) was used to test the photocatalytic activity of Yb/TiO 2 . The characterizations indicate that the doping of Yb could inhibit the crystal growth of TiO 2 , enhance the specific surface area, increase the binding energy of Ti2p, and also slightly expand the adsorption ranges to visible light. Furthermore, the computation of band structure also indicates that Yb-doped TiO 2 could make the forbidden band narrower than pure anatase TiO 2 , which presents a red shift in the absorption spectrum. As a result of the photodegradation experiment on BHA, Yb/TiO 2 (0.50% in mass) sintered at 450 °C displayed the highest catalytic activity for BHA when compared with pure TiO 2 or other doped Yb/TiO 2 compositions, and more than 89.2% of the total organic carbon was removed after 120 min. Almost all anions, including Cl − , HCO 3 − , NO 3 − , and SO 4 2− , inhibited the degradation of BHA by Yb/TiO 2 , and their inhibition effects followed the order of HCO 3 − > NO 3 − > SO 4 2− > Cl − . Cations of Na + , K + , Ca 2+ , and Mg 2+ displayed a slight suppressing effect due to the impact of Cl − coexisting in the solution. In addition, Yb/TiO 2 maintained a high photocatalytic ability with respect to BHA after four runs. It is hypothesized that ·OH is one of the main species involved in the photodegradation of BHA, and the mutual transformation of Yb 3+ and Yb 2+ could promote the separation of electron-hole pairs.

Suggested Citation

  • Xianping Luo & Sipin Zhu & Junyu Wang & Chunying Wang & Min Wu, 2017. "Characterization and Computation of Yb/TiO 2 and Its Photocatalytic Degradation with Benzohydroxamic Acid," IJERPH, MDPI, vol. 14(12), pages 1-13, November.
  • Handle: RePEc:gam:jijerp:v:14:y:2017:i:12:p:1471-:d:120669
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/14/12/1471/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1660-4601/14/12/1471/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Xianping Luo & Junyu Wang & Chunying Wang & Sipin Zhu & Zhihui Li & Xuekun Tang & Min Wu, 2016. "Degradation and Mineralization of Benzohydroxamic Acid by Synthesized Mesoporous La/TiO 2," IJERPH, MDPI, vol. 13(10), pages 1-14, October.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Jinkai Shu & Bozhi Ren & Wei Zhang & An Wang & Sen Lu & Shuyu Liu, 2022. "Influencing Factors and Kinetics of Modified Shell Powder/La-Fe-TiO 2 Photocatalytic Degradation of Pyridine Wastewater," IJERPH, MDPI, vol. 19(22), pages 1-16, November.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:14:y:2017:i:12:p:1471-:d:120669. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.