Noble metal -doped graphitic carbon nitride photocatalyst for enhancement photocatalytic decomposition of antibiotic pollutant in wastewater under visible light
Author | Viet N.M. |
Author | Trung D.Q. |
Author | Giang B.L. |
Author | Tri N.L.M. |
Author | Thao P. |
Author | Pham T.H. |
Author | Kamand F.Z. |
Author | Al Tahtamouni T.M. |
Available date | 2020-04-01T06:59:42Z |
Publication Date | 2019 |
Publication Name | Journal of Water Process Engineering |
Resource | Scopus |
ISSN | 22147144 |
Abstract | This study the noble metal (Ag)-doped graphitic carbon nitride (g-C3N4) photocatalyst was synthesized via a facial thermal condensation method. The structure and surface elements distribution of synthesized materials were characterized using XRD, SEM, XPS, UV–vis and N2 adsorption-desorption experiment. The doping of Ag not only decreased the band-gap energy and particle size, but also enhanced the separation of charge carriers and decreased the electron/hole recombination in the g-C3N4 structure. The photocatalytic activity of Ag-doped g-C3N4 was investigated using oxytetracycline (OTC) as a model pollutant. The loading of 7% Ag onto g-C3N4 showed highest photocatalytic degradation efficiency of OT. The synthesized photocatalyst showed extremely high stability after 5 cycles as confirmed through various characterization techniques such as SEM and XRD. Eventually, several degradation intermediates of OTC were identified, and possible decomposition pathways were proposed. The 7-AgCN also was applied for the degradation of complex antibiotic wastewater, the removal efficiencies of OTC within 120 min was 98.7%. Overall, this work provides a novel strategy for the green synthesis of Ag-supportedg-C3N4, and its promising application prospect in environmental remediation. |
Sponsor | This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 104.05-2018.354 . Appendix A |
Language | en |
Publisher | Elsevier Ltd |
Subject | Graphitic carbon nitride Noble metal Oxytetracycline Photocatalyst Wastewater |
Type | Article |
Volume Number | 32 |
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