Affiliations 

  • 1 Department of Environmental Engineering, Innovation and Development Center of Sustainable Agriculture, Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan
  • 2 School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
  • 3 Department of Environmental Engineering, Innovation and Development Center of Sustainable Agriculture, Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan. Electronic address: linky@nchu.edu.tw
  • 4 Department of Civil Engineering, National Cheng Kung University, Tainan City, Taiwan
  • 5 Department of Chemical Engineering, R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli Dist., Taoyuan City 32023, Taiwan. Electronic address: chechiahu@cycu.edu.tw
  • 6 School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China. Electronic address: yunchendu@hit.edu.cn
Sci Total Environ, 2020 Jul 01;724:138032.
PMID: 32408427 DOI: 10.1016/j.scitotenv.2020.138032

Abstract

Since 5-sulfosalicylic acid (SFA) has been increasingly released to the environment, SO4--based oxidation processes using Oxone have been considered as useful methods to eliminate SFA. As Co3O4 has been a promising material for OX activation, the four 3D Co3O4 catalysts with distinct morphologies, including Co3O4-C (with cubes), Co3O4-P (with plates), Co3O4-N (with needles) and Co3O4-F (with floral structures), are fabricated for activating OX to degrade SFA. In particular, Co3O4-F not only exhibits the highest surface area but also possesses the abundant Co2+ and more reactive surface, making Co3O4-F the most advantageous 3D Co3O4 catalyst for OX activation to degrade SFA. The mechanism of SFA by this 3D Co3O4/OX is also investigated and the corresponding SFA degradation pathway has been elucidated. The catalytic activities of Co3O4 catalysts can be correlated to physical and chemical properties which were associated with particular morphologies to provide insights into design of 3D Co3O4-based catalysts for OX-based technology to degrade emerging contaminants, such as SFA.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.