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

Deyang Li  -  School of Chemical Engineering, Shenyang University of Chemical Technology, China
Lihui Fan  -  School of Chemical Engineering, Shenyang University of Chemical Technology, China
Min Qi  -  School of Chemical Engineering, Shenyang University of Chemical Technology, China
*Yanming Shen  -  School of Chemical Engineering, Shenyang University of Chemical Technology, China
Dongbin Liu  -  School of Chemical Engineering, Shenyang University of Chemical Technology, China
Shifeng Li  -  School of Chemical Engineering, Shenyang University of Chemical Technology, China
Received: 3 Feb 2018; Published: 4 Dec 2018.
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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

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