Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+

DOI: https://doi.org/10.9767/bcrec.13.3.2168.502-511
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Submitted: 03-02-2018
Published: 04-12-2018
Section: Original Research Articles
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Co-doped ZnAl layered double hydroxides (LDH) were papered by coprecipitation. The prepared samples were characterized by multiple techniques including X-ray Diffraction (XRD), Brunauer−Emmett−Teller (BET) surface area, Scanning Electronic Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and UV−Vis Diffuse-Reflectance Spectroscopy (UV−Vis DRS). The incorporation of Co2+ into the ZnAl LDH sheets as CrO6 octahedron forms a new  energy level which contributes for the excitation of electrons under visible light. The doped Co2+ at a reasonable content also serves as photo-generated charges separator and improves the visible light photocatalytic activity of ZnAl LDH. A degradation mechanism based on the hydroxyl radical as the active species was proposed. Copyright © 2018 BCREC Group. All rights reserved

Received: 3rd February 2018; Revised: 8th July 2018; Accepted: 13rd July 2018

How to Cite: Li, D., Fan, L., Qi, M., Shen, Y., Liu, D., Li, S. (2018). Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 502-511 (doi:10.9767/bcrec.13.3.2168.502-511)

Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.2168.502-511



Layered Double Hydroxides; Cobalt-doping; RhB Degradation; Visible Light

  1. Deyang Li 
    School of Chemical Engineering, Shenyang University of Chemical Technology, China
  2. Lihui Fan 
    School of Chemical Engineering, Shenyang University of Chemical Technology, China
  3. Min Qi 
    School of Chemical Engineering, Shenyang University of Chemical Technology, China
  4. Yanming Shen 
    School of Chemical Engineering, Shenyang University of Chemical Technology, China
  5. Dongbin Liu 
    School of Chemical Engineering, Shenyang University of Chemical Technology, China
  6. Shifeng Li 
    School of Chemical Engineering, Shenyang University of Chemical Technology, China
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