Efficient catalytic ozonation of diclofenac by three-dimensional iron (Fe)-doped SBA-16 mesoporous structures

Xinyuan Tong; Zhidong Li; Weirui Chen; Jing Wang; Xukai Li; Jiaxin Mu; Yiming Tang; Laisheng Li

doi:10.1016/j.jcis.2020.06.003

Efficient catalytic ozonation of diclofenac by three-dimensional iron (Fe)-doped SBA-16 mesoporous structures

J Colloid Interface Sci. 2020 Oct 15:578:461-470. doi: 10.1016/j.jcis.2020.06.003. Epub 2020 Jun 2.

Authors

Xinyuan Tong¹, Zhidong Li¹, Weirui Chen², Jing Wang³, Xukai Li², Jiaxin Mu¹, Yiming Tang², Laisheng Li⁴

Affiliations

¹ School of Environment, South China Normal University, Guangzhou 510006, China.
² School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangzhou 510006, China.
³ School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangzhou 510006, China. Electronic address: jing.wang@m.scnu.edu.cn.
⁴ School of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Guangzhou 510006, China. Electronic address: llsh@scnu.edu.cn.

PMID: 32535428
DOI: 10.1016/j.jcis.2020.06.003

Abstract

The removal of diclofenac (DCF) that causes risks to the environment and human health remains a great challenge due to the inefficiency of conventional physical methods. In this work, an efficient catalytic ozonation of DCF is achieved from a novel iron-doped SBA-16 (Fe-SBA-16) three-dimensional (3D) mesoporous structure. The Fe-SBA-16/ozonation (O₃) system exhibits enhanced catalytic activity towards DCF mineralization (up to 79.3% in 1.5 h), which is 1.2 times of its counterpart, Fe-MCM-41, and 2.4 times of the sole ozonation without catalysts. The unique 3D mesoporous structures accelerate the mass transfer and meanwhile result in higher ozone utilization efficiency for more effective generation of active species, hence enhancing the DCF mineralization efficiency. We believe the well-defined Fe-SBA-16 catalyst coupled with their enhanced catalytic ozonation performances will provide new insights into the construction of mesoporous structured materials to eliminate hazards in aqueous solutions for the environment remediation.

Keywords: Catalytic ozonation; Diclofenac; Fe-SBA-16; Hydroxyl radical; Ozone.

MeSH terms

Catalysis
Diclofenac
Humans
Iron
Ozone*
Silicon Dioxide
Water Pollutants, Chemical* / analysis
Water Purification*

Substances

SBA-16
Water Pollutants, Chemical
Diclofenac
Ozone
Silicon Dioxide
Iron