Cobalt oxide coupled with graphitic carbon nitride composite heterojunction for efficient Z-scheme photocatalytic environmental pollutants degradation performance.

Autor: Suganthi S; School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea., Vignesh S; Materials Science Research Laboratory, Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India. Electronic address: vigneshattur1@gmail.com., Kalyana Sundar J; Materials Science Research Laboratory, Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India., Alqarni SA; Department of Electrical Engineering, King Khalid University, Abha, Saudi Arabia., Pandiaraj S; Department of Self-Development Skills, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia., Hwan Oh T; School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea. Electronic address: taehwanoh@ynu.ac.kr.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2023 Oct 15; Vol. 235, pp. 116574. Date of Electronic Publication: 2023 Jul 07.
DOI: 10.1016/j.envres.2023.116574
Abstrakt: The Co 3 O 4 /g-C 3 N 4 Z-scheme composite heterojunction has been effectively built in a facile sonication-assisted hydrothermal manner. The as-synthesized optimal 0.2 M Co 3 O 4 /g-C 3 N 4 (GCO2) composite photocatalysts (PCs) revealed admirable degradation efficiency towards methyl orange (MO, 65.1%) and methylene blue (MB, 87.9%) organic pollutant compared with bare g-C 3 N 4 within 210 min under light irradiation. Besides, the features of investigating structural, morphological and optical properties have evidence that the unique decoration effect of Co 3 O 4 nanoparticles (NPs) on the g-C 3 N 4 structure with intimate interface heterojunction of well-matched band structures noticeably facilitates the photo-generated charge transport/separation efficiency, reduces the recombination rates and widens the visible-light fascination which could advantageous to upgrading photocatalytic action with superior redox ability. Especially, the probable Z-scheme photocatalytic mechanism pathway is also elucidated in detail based on the quenching results. Hence, this work delivers a facile and hopeful candidate for contaminated water remediation via visible-light photocatalysis over the efficient g-C 3 N 4 -based catalysts.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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