Synergistic Effects of Co3O4-gC3N4-Coated ZnO Nanoparticles: A Novel Approach for Enhanced Photocatalytic Degradation of Ciprofloxacin and Hydrogen Evolution via Water Splitting

This research evaluates the efficacy of catalysts based on Co3O4-gC3N4@ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic production of H2 through water splitting. The results show that CFX experiences prompt photodegradation, with rates reaching up to 99% within 60 min. Notably...

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Published inMaterials Vol. 17; no. 5; p. 1059
Main Authors Machín, Abniel, Morant, Carmen, Soto-Vázquez, Loraine, Resto, Edgard, Ducongé, José, Cotto, María, Berríos-Rolón, Pedro J., Martínez-Perales, Cristian, Márquez, Francisco
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LanguageEnglish
Published Basel MDPI AG 25.02.2024
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Abstract This research evaluates the efficacy of catalysts based on Co3O4-gC3N4@ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic production of H2 through water splitting. The results show that CFX experiences prompt photodegradation, with rates reaching up to 99% within 60 min. Notably, the 5% (Co3O4-gC3N4)@ZnONPs emerged as the most potent catalyst. The recyclability studies of the catalyst revealed a minimal activity loss, approximately 6%, after 15 usage cycles. Using gas chromatography–mass spectrometry (GC-MS) techniques, the by-products of CFX photodegradation were identified, which enabled the determination of the potential degradation pathway and its resultant products. Comprehensive assessments involving photoluminescence, bandgap evaluations, and the study of scavenger reactions revealed a degradation mechanism driven primarily by superoxide radicals. Moreover, the catalysts demonstrated robust performance in H2 photocatalytic production, with some achieving outputs as high as 1407 µmol/hg in the visible spectrum (around 500 nm). Such findings underline the potential of these materials in environmental endeavors, targeting both water purification from organic pollutants and energy applications.
AbstractList This research evaluates the efficacy of catalysts based on Co3O4-gC3N4@ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic production of H2 through water splitting. The results show that CFX experiences prompt photodegradation, with rates reaching up to 99% within 60 min. Notably, the 5% (Co3O4-gC3N4)@ZnONPs emerged as the most potent catalyst. The recyclability studies of the catalyst revealed a minimal activity loss, approximately 6%, after 15 usage cycles. Using gas chromatography–mass spectrometry (GC-MS) techniques, the by-products of CFX photodegradation were identified, which enabled the determination of the potential degradation pathway and its resultant products. Comprehensive assessments involving photoluminescence, bandgap evaluations, and the study of scavenger reactions revealed a degradation mechanism driven primarily by superoxide radicals. Moreover, the catalysts demonstrated robust performance in H2 photocatalytic production, with some achieving outputs as high as 1407 µmol/hg in the visible spectrum (around 500 nm). Such findings underline the potential of these materials in environmental endeavors, targeting both water purification from organic pollutants and energy applications.
This research evaluates the efficacy of catalysts based on Co 3 O 4 -gC 3 N 4 @ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic production of H 2 through water splitting. The results show that CFX experiences prompt photodegradation, with rates reaching up to 99% within 60 min. Notably, the 5% (Co 3 O 4 -gC 3 N 4 )@ZnONPs emerged as the most potent catalyst. The recyclability studies of the catalyst revealed a minimal activity loss, approximately 6%, after 15 usage cycles. Using gas chromatography–mass spectrometry (GC-MS) techniques, the by-products of CFX photodegradation were identified, which enabled the determination of the potential degradation pathway and its resultant products. Comprehensive assessments involving photoluminescence, bandgap evaluations, and the study of scavenger reactions revealed a degradation mechanism driven primarily by superoxide radicals. Moreover, the catalysts demonstrated robust performance in H 2 photocatalytic production, with some achieving outputs as high as 1407 µmol/hg in the visible spectrum (around 500 nm). Such findings underline the potential of these materials in environmental endeavors, targeting both water purification from organic pollutants and energy applications.
Author Resto, Edgard
Martínez-Perales, Cristian
Cotto, María
Márquez, Francisco
Morant, Carmen
Soto-Vázquez, Loraine
Berríos-Rolón, Pedro J
Machín, Abniel
Ducongé, José
AuthorAffiliation 3 Materials Characterization Center Inc., Molecular Sciences Research Center, University of Puerto Rico, San Juan, PR 00926, USA; loraine.soto@mcc.com.pr (L.S.-V.); restoe@mcc.com.pr (E.R.)
4 Nanomaterials Research Group, Department of Natural Sciences and Technology, Division of Natural Sciences, Technology and Environment, Universidad Ana G. Méndez-Gurabo Campus, Gurabo, PR 00778, USA; jduconge@uagm.edu (J.D.); mcotto48@uagm.edu (M.C.); berriosp1@uagm.edu (P.J.B.-R.); cmartinez372@email.uagm.edu (C.M.-P.)
2 Department of Applied Physics, Autonomous University of Madrid, and Instituto de Ciencia de Materiales Nicolás Cabrera, 28049 Madrid, Spain; c.morant@uam.es
1 Environmental Catalysis Research Lab, Division of Science, Technology and Environment, Cupey Campus, Universidad Ana G. Méndez, Cupey, PR 00926, USA
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Snippet This research evaluates the efficacy of catalysts based on Co3O4-gC3N4@ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic production of H2...
This research evaluates the efficacy of catalysts based on Co 3 O 4 -gC 3 N 4 @ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic...
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StartPage 1059
SubjectTerms Antibiotics
Bacteria
Carbon
Catalysts
Caustic soda
ciprofloxacin
Climate change
Cobalt
Cobalt oxides
Drug resistance
Emission standards
Energy consumption
Fossil fuels
Gas chromatography
Hydrogen
Hydrogen evolution
Mass spectrometry
Nanoparticles
Nitrogen
Outdoor air quality
Photocatalysis
photocatalytic hydrogen evolution
Photodegradation
Photoluminescence
Public health
Recyclability
Synergistic effect
Visible spectrum
Water purification
Water splitting
Zinc oxide
Zinc oxides
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Title Synergistic Effects of Co3O4-gC3N4-Coated ZnO Nanoparticles: A Novel Approach for Enhanced Photocatalytic Degradation of Ciprofloxacin and Hydrogen Evolution via Water Splitting
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https://pubmed.ncbi.nlm.nih.gov/PMC10935200
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Volume 17
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