Unravelling the unique roles of NCQDs over CeFeO3 perovskite as highly efficient photoluminescent solar induced peroxymonosulfate/photocatalyst system: Optimization of removal process, mechanism and degradation pathway

TUNA, Özlem; Şimşek, Esra Bilgin

doi:10.1016/j.jece.2023.109879

Unravelling the unique roles of NCQDs over CeFeO3 perovskite as highly efficient photoluminescent solar induced peroxymonosulfate/photocatalyst system: Optimization of removal process, mechanism and degradation pathway

Yazarlar (2)

Doç. Dr. Özlem TUNA Yalova Üniversitesi, Türkiye

Esra Bilgin Şimşek
Gebze Teknik Üniversitesi, Türkiye

Makale Türü	Özgün Makale
Makale Alt Türü	SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı	Journal of Environmental Chemical Engineering
Dergi ISSN	2213-3437 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler	SCI
Dergi Grubu	Q1
Makale Dili	İngilizce
Basım Tarihi	06-2023
Cilt No	11
Sayı	3
Sayfalar	109879 /
DOI Numarası	10.1016/j.jece.2023.109879
Makale Linki	http://dx.doi.org/10.1016/j.jece.2023.109879

Özet

In this work, novel ferrite type CeFeO3 perovskite was elaborately designed with nitrogen-doped carbon quantum dots (NCQDs) for effective degradation of ciprofloxacin (CPX) under peroxymonosulfate (PMS) activated photocatalytic system. The critic roles of NCQDs addition in the PMS-activated system were examined through characterization and photocatalytic tests. The as-fabricated CeFeO3 @NCQDs heterojunction showed superior catalytic performance (92.5 %) which was 2.8 times higher than that of bare CeFeO3 (32.0 %). It was found through XPS analysis that new oxygen-rich bonds were formed in the CeFeO3 @NCQDs sample, providing new reaction sites. PL technique showed that the carrier separation efficiency of the composite was significantly superior to that of the sole CeFeO3 due to excellent electron transfer property of NCQDs. Furthermore, the change in the band energy potentials improved the oxidation ability, resulting in increased degradation rate. The heterojunction catalyst also showed high removal efficiency in real water matrices. Meanwhile, radical trapping tests showed that the superoxide radicals play dominant roles in the photodegradation system. The as-synthesized catalyst also exhibited satisfactory performance in dye decomposition reactions. In addition, Box–Behnken design was applied to find out the optimum conditions which were determined as catalyst dosage of 0.80 g/L, PMS concentration of 4.90 mM and initial CPX concentration of 7.00 mg/L. The CeFeO3 @NCQDs/Vis/PMS system could be considered as a promising candidate in the aspect of practical wastewater treatment applications.

Anahtar Kelimeler

Carbon dots | CeFeO3 | Ciprofloxacin | Perovskite | Photocatalysis

Science Direct

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
SCOPUS	20

Unravelling the unique roles of NCQDs over CeFeO3 perovskite as highly efficient photoluminescent solar induced peroxymonosulfate/photocatalyst system: Optimization of removal process, mechanism and degradation pathway

Dergi Adı	Journal of Environmental Chemical Engineering
Yayıncı	Elsevier Ltd
Açık Erişim	Hayır
ISSN	2213-2929
E-ISSN	2213-3437
CiteScore	12,5
SJR	1,454
SNIP	1,286

Unravelling the unique roles of NCQDs over CeFeO3 perovskite as highly efficient photoluminescent solar induced peroxymonosulfate/photocatalyst system: Optimization of removal process, mechanism and degradation pathway

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