Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

Journal article

Authors/Editors

SONGKEART PHATTARAPATTAMAWONG

Strategic Research Themes

Sustainable environmental technology (Sustainable Energy & Environment)

Publication Details

Author list: Mao, Po-Hsin; Kwon, Eilhann; Chang, Hou-Chien; Bui, Ha Manh; Phattarapattamawong, Songkeart; Tsai, Yu-Chih; Lin, Kun-Yi Andrew; Ebrahimi, Afshin; Yee, Yeoh Fei; Yuan, Min-Hao;

Publisher: MDPI

Publication year: 2022

Journal acronym: Nanomaterials

Volume number: 12

Issue number: 24

eISSN: 2079-4991

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144891553&doi=10.3390%2fnano12244396&partnerID=40&md5=c851d8f45169b70db61c6656adfbae8b

Languages: English-Great Britain (EN-GB)

View in Web of Science | View on publisher site | View citing articles in Web of Science

Abstract

As cobalt (Co) has been the most useful element for activating Oxone to generate SO4•−, this study aims to develop a hierarchical catalyst with nanoscale functionality and macroscale convenience by decorating nanoscale Co-based oxides on macroscale supports. Specifically, a facile protocol is proposed by utilizing Cu mesh itself as a Cu source for fabricating CuCo2O4 on Cu mesh. By changing the dosages of the Co precursor and carbamide, various nanostructures of CuCo2O4 grown on a Cu mesh can be afforded, including nanoscale needles, flowers, and sheets. Even though the Cu mesh itself can be also transformed to a Cu-Oxide mesh, the growth of CuCo2O4 on the Cu mesh significantly improves its physical, chemical, and electrochemical properties, making these CuCo2O4@Cu meshes much more superior catalysts for activating Oxone to degrade the Azo toxicant, Acid Red 27. More interestingly, the flower-like CuCo2O4@Cu mesh exhibits a higher specific surface area and more superior electrochemical performance, enabling the flower-like CuCo2O4@Cu mesh to show the highest catalytic activity for Oxone activation to degrade Acid Red 27. The flower-like CuCo2O4@Cu mesh also exhibits a much lower Ea of Acid Red 27 degradation than the reported catalysts. These results demonstrate that CuCo2O4@Cu meshes are advantageous heterogeneous catalysts for Oxone activation, and especially, the flower-like CuCo2O4@Cu mesh appears as the most effective CuCo2O4@Cu mesh to eliminate the toxic Acid Red 27. © 2022 by the authors.

Keywords

AOPs, CuCo2O4, mesh, PMS