Feasibility of Macroporous CeO2 Photocatalysts for Removal of Lead Ions from Water

Takuya Nozaki  -  Department of Chemical Science and Engineering, National Institute of Technology, , Japan
*Ryo Shoji  -  Department of Chemical Science and Engineering, National Institute of Technology, , Japan
Yasukazu Kobayashi  -  Materials Research Center for Element Strategy, Tokyo Institute of Technology, Kanagawa, Japan
Kazunori Sato  -  Department of Materials Science and Technology, Nagaoka University of Technology, Niigata, Japan
Received: 21 Mar 2017; Revised: 30 Nov 2017; Accepted: 8 Dec 2017; Published: 1 Aug 2018; Available online: 11 Jun 2018.
Open Access Copyright (c) 2018 Bulletin of Chemical Reaction Engineering & Catalysis
License URL: http://creativecommons.org/licenses/by-sa/4.0

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Removal of lead ions from water was conducted by a coupling approach of adsorption and photoelectrodeposition over a macroporous CeO2 photocatalyst loaded with ZnO. The photocatalyst was prepared by the hard template method and the impregnation method. The various size of silica spheres (0.05-0.4 µm) were used as a template for the photocatalyst, and the highest BET surface area (73.8 m2/g) was given in the sample prepared with the smallest silica sphere (0.05 µm). In the removal of lead ions, the porous sample showed a large amount of removal of lead ions. In addition, the ZnO loaded catalysts showed a larger amount of removal for lead ions than an unloaded catalyst under the UV light irradiation. In the reaction, since zinc ions were simultaneously dissolved to the solution, it was suggested that this reaction was the ion-exchange reaction between lead ions and zinc ions and was promoted by the UV light irradiation. Copyright © 2018 BCREC Group. All rights reserved

Received: 21st March 2017; Revised: 31st November 2017; Accepted: 8th December 2017; Available online: 11st June 2018; Published regularly: 1st August 2018

How to Cite: Nozaki, T., Shoji, R., Kobayashi, Y., Sato, K. (2018). Feasibility of Macroporous CeO2 Photocatalysts for Removal of Lead Ions from Water. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 256-261 (doi:10.9767/bcrec.13.2.1020.256-261)


Keywords: CeO2 photocatalyst; Lead ion removal; Macroporous photocatalyst; Hard template method
Funding: Nagaoka University of Technology

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