Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites

The co-existence of organic contaminants and heavy metals including 4-chlorophenol (4-CP) and Cr(VI) in aquatic system have become a challenging task in the wastewater treatment. Herein, the synchronous photocatalytic decomposition of 4-CP and Cr(VI) over new Z-scheme CoFe2O4/P�BiOBr heterojunctio...

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Main Authors: Sin, J.-C., Lam, S.-M., Zeng, H., Lin, H., Li, H., Huang, L., Tham, K.-O., Mohamed, A.R., Lim, J.-W.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.33018 /
Published: Academic Press Inc. 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129719966&doi=10.1016%2fj.envres.2022.113394&partnerID=40&md5=8d6869e45ca5ff13bca88c422941fca3
http://eprints.utp.edu.my/33018/
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spelling utp-eprints.330182022-06-09T07:36:11Z Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites Sin, J.-C. Lam, S.-M. Zeng, H. Lin, H. Li, H. Huang, L. Tham, K.-O. Mohamed, A.R. Lim, J.-W. The co-existence of organic contaminants and heavy metals including 4-chlorophenol (4-CP) and Cr(VI) in aquatic system have become a challenging task in the wastewater treatment. Herein, the synchronous photocatalytic decomposition of 4-CP and Cr(VI) over new Z-scheme CoFe2O4/P�BiOBr heterojunction nanocomposites were revealed. In this work, the nanocomposites were successfully developed via a surfactant-free hydrothermal method. The heterojunction interface was created by decorating magnetic CoFe2O4 nanoparticles onto P�BiOBr nanosheets. The as-fabricated CoFe2O4/P�BiOBr nanocomposites substantially improved the synchronous decomposition of 4-CP and Cr(VI) compared to the single-phase component samples under visible light irradiation. Particularly, the 30-CoFe2O4/P�BiOBr nanocomposite displayed the best photocatalytic performance, which decomposed 95.6 4-CP and 100 Cr(VI) within 75 min. The photocatalytic improvement was assigned to the Z-scheme heterojunction assisted charge migration between CoFe2O4 and P�BiOBr, and the acceleration of charge carrier separation was validated by the findings of charge dynamics measurements. The harmful 4-CP was photodegraded into smaller organics whereas the Cr(VI) was photoreduced into Cr(III) after 30-CoFe2O4/P�BiOBr photocatalysis, and the good recyclability of fabricated nanocomposite in photocatalytic reaction also showed promising potential for practical applications in environmental remediation. Finally, the radical quenching tests confirmed that there existed the Z-scheme path of charge migration in CoFe2O4/P�BiOBr nanocomposite, which was the mechanism responsible for its high photoactivity. © 2022 Elsevier Inc. Academic Press Inc. 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129719966&doi=10.1016%2fj.envres.2022.113394&partnerID=40&md5=8d6869e45ca5ff13bca88c422941fca3 Sin, J.-C. and Lam, S.-M. and Zeng, H. and Lin, H. and Li, H. and Huang, L. and Tham, K.-O. and Mohamed, A.R. and Lim, J.-W. (2022) Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites. Environmental Research, 212 . http://eprints.utp.edu.my/33018/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description The co-existence of organic contaminants and heavy metals including 4-chlorophenol (4-CP) and Cr(VI) in aquatic system have become a challenging task in the wastewater treatment. Herein, the synchronous photocatalytic decomposition of 4-CP and Cr(VI) over new Z-scheme CoFe2O4/P�BiOBr heterojunction nanocomposites were revealed. In this work, the nanocomposites were successfully developed via a surfactant-free hydrothermal method. The heterojunction interface was created by decorating magnetic CoFe2O4 nanoparticles onto P�BiOBr nanosheets. The as-fabricated CoFe2O4/P�BiOBr nanocomposites substantially improved the synchronous decomposition of 4-CP and Cr(VI) compared to the single-phase component samples under visible light irradiation. Particularly, the 30-CoFe2O4/P�BiOBr nanocomposite displayed the best photocatalytic performance, which decomposed 95.6 4-CP and 100 Cr(VI) within 75 min. The photocatalytic improvement was assigned to the Z-scheme heterojunction assisted charge migration between CoFe2O4 and P�BiOBr, and the acceleration of charge carrier separation was validated by the findings of charge dynamics measurements. The harmful 4-CP was photodegraded into smaller organics whereas the Cr(VI) was photoreduced into Cr(III) after 30-CoFe2O4/P�BiOBr photocatalysis, and the good recyclability of fabricated nanocomposite in photocatalytic reaction also showed promising potential for practical applications in environmental remediation. Finally, the radical quenching tests confirmed that there existed the Z-scheme path of charge migration in CoFe2O4/P�BiOBr nanocomposite, which was the mechanism responsible for its high photoactivity. © 2022 Elsevier Inc.
format Article
author Sin, J.-C.
Lam, S.-M.
Zeng, H.
Lin, H.
Li, H.
Huang, L.
Tham, K.-O.
Mohamed, A.R.
Lim, J.-W.
spellingShingle Sin, J.-C.
Lam, S.-M.
Zeng, H.
Lin, H.
Li, H.
Huang, L.
Tham, K.-O.
Mohamed, A.R.
Lim, J.-W.
Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites
author_sort Sin, J.-C.
title Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites
title_short Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites
title_full Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites
title_fullStr Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites
title_full_unstemmed Enhanced synchronous photocatalytic 4-chlorophenol degradation and Cr(VI) reduction by novel magnetic separable visible-light-driven Z-scheme CoFe2O4/P-doped BiOBr heterojunction nanocomposites
title_sort enhanced synchronous photocatalytic 4-chlorophenol degradation and cr(vi) reduction by novel magnetic separable visible-light-driven z-scheme cofe2o4/p-doped biobr heterojunction nanocomposites
publisher Academic Press Inc.
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129719966&doi=10.1016%2fj.envres.2022.113394&partnerID=40&md5=8d6869e45ca5ff13bca88c422941fca3
http://eprints.utp.edu.my/33018/
_version_ 1741197791471861760
score 11.62408

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