A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System

An efficient Fenton-like catalyst CuO/CeO(2) was synthesized using ultrasonic impregnation and used to remove diclofenac from water. The catalyst was characterized by N(2) adsorption-desorption, SEM-EDS, XRD, HRTEM, Raman, and XPS analyses. Results showed that CuO/CeO(2) possessed large surface area...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhu, Jia, Zhang, Guangming, Xian, Guang, Zhang, Nan, Li, Jinwei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6877685/
https://www.ncbi.nlm.nih.gov/pubmed/31803724
http://dx.doi.org/10.3389/fchem.2019.00796
_version_ 1783473384770764800
author Zhu, Jia
Zhang, Guangming
Xian, Guang
Zhang, Nan
Li, Jinwei
author_facet Zhu, Jia
Zhang, Guangming
Xian, Guang
Zhang, Nan
Li, Jinwei
author_sort Zhu, Jia
collection PubMed
description An efficient Fenton-like catalyst CuO/CeO(2) was synthesized using ultrasonic impregnation and used to remove diclofenac from water. The catalyst was characterized by N(2) adsorption-desorption, SEM-EDS, XRD, HRTEM, Raman, and XPS analyses. Results showed that CuO/CeO(2) possessed large surface area, high porosity, and fine elements dispersion. Cu was loaded in CeO(2), which increased the oxygen vacancies. The exposed crystal face of CeO(2) (200) was beneficial to the catalytic activity. The diclofenac removal experiment showed that there was a synergistic effect between CuO and CeO(2), which might be caused by more oxygen vacancies generation and electronic interactions between Cu and Ce species. The experimental conditions were optimized, including pH, catalyst and H(2)O(2) dosages, and 86.62% diclofenac removal was achieved. Diclofenac oxidation by ·OH and adsorbed oxygen species was the main mechanism for its removal in this Fenton-like system.
format Online
Article
Text
id pubmed-6877685
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-68776852019-12-04 A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System Zhu, Jia Zhang, Guangming Xian, Guang Zhang, Nan Li, Jinwei Front Chem Chemistry An efficient Fenton-like catalyst CuO/CeO(2) was synthesized using ultrasonic impregnation and used to remove diclofenac from water. The catalyst was characterized by N(2) adsorption-desorption, SEM-EDS, XRD, HRTEM, Raman, and XPS analyses. Results showed that CuO/CeO(2) possessed large surface area, high porosity, and fine elements dispersion. Cu was loaded in CeO(2), which increased the oxygen vacancies. The exposed crystal face of CeO(2) (200) was beneficial to the catalytic activity. The diclofenac removal experiment showed that there was a synergistic effect between CuO and CeO(2), which might be caused by more oxygen vacancies generation and electronic interactions between Cu and Ce species. The experimental conditions were optimized, including pH, catalyst and H(2)O(2) dosages, and 86.62% diclofenac removal was achieved. Diclofenac oxidation by ·OH and adsorbed oxygen species was the main mechanism for its removal in this Fenton-like system. Frontiers Media S.A. 2019-11-19 /pmc/articles/PMC6877685/ /pubmed/31803724 http://dx.doi.org/10.3389/fchem.2019.00796 Text en Copyright © 2019 Zhu, Zhang, Xian, Zhang and Li. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Zhu, Jia
Zhang, Guangming
Xian, Guang
Zhang, Nan
Li, Jinwei
A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System
title A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System
title_full A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System
title_fullStr A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System
title_full_unstemmed A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System
title_short A High-Efficiency CuO/CeO(2) Catalyst for Diclofenac Degradation in Fenton-Like System
title_sort high-efficiency cuo/ceo(2) catalyst for diclofenac degradation in fenton-like system
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6877685/
https://www.ncbi.nlm.nih.gov/pubmed/31803724
http://dx.doi.org/10.3389/fchem.2019.00796
work_keys_str_mv AT zhujia ahighefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT zhangguangming ahighefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT xianguang ahighefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT zhangnan ahighefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT lijinwei ahighefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT zhujia highefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT zhangguangming highefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT xianguang highefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT zhangnan highefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem
AT lijinwei highefficiencycuoceo2catalystfordiclofenacdegradationinfentonlikesystem

Ejemplares similares