Novel metal-free intercalation of g-C3N4 using hyperbranched copolymer for efficient photocatalytic degradation of tetracycline

TUNA, Özlem; Şimşek, Esra Bilgin; Dashan, Irem; Temel, Gokhan

doi:10.1016/j.jphotochem.2020.112519

Novel metal-free intercalation of g-C3N4 using hyperbranched copolymer for efficient photocatalytic degradation of tetracycline

Yazarlar (4)

Doç. Dr. Özlem TUNA Yalova Üniversitesi, Türkiye

Esra Bilgin Şimşek
Yalova Üniversitesi, Türkiye

Irem Dashan
Yıldız Teknik Üniversitesi, Türkiye

Gokhan Temel
Yalova Üniversitesi, Türkiye

Makale Türü	Özgün Makale
Makale Alt Türü	SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı	Journal of Photochemistry and Photobiology A Chemistry
Dergi ISSN	1010-6030 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler	SCI-Expanded
Dergi Grubu	Q2
Makale Dili	İngilizce
Basım Tarihi	06-2020
Cilt No	396
Sayı	1
Sayfalar	112519 /
DOI Numarası	10.1016/j.jphotochem.2020.112519
Makale Linki	http://dx.doi.org/10.1016/j.jphotochem.2020.112519

Özet

Herein, graphitic carbon nitride (g-C3N4) structure was successfully intercalated with a hyperbranched copolymer (poly(DEAEMA-co-MMA)) to utilize a novel and applicable photocatalyst (P[sbnd]CN) for antibiotic degradation under visible light illumination. The as-synthesized catalysts were systematically characterized by XPS, FTIR, TEM, XRD, BET, DRS, PL and EIS methods. The intercalation of g-C3N4 with copolymer increased the specific surface area from 46.8 to 210.2 m²/g, leading to increased active sites on the catalyst surface. DRS, PL, EIS techniques and the transient photocurrent responses demonstrated enhanced visible-light absorption and separation efficiency of photo-generated electron-holes for P[sbnd]CN catalyst. XPS analysis revealed the formation of new delocalization π bonds which improves the electronic conductivity. The photocatalytic performance on tetracycline (TC) degradation on P[sbnd]CN catalyst was investigated under visible light irradiation. The intercalated g-C3N4 exhibited much higher photoactivity toward TC degradation (90 %) comparing with bare g-C3N4 (65 %). The enhanced photocatalytic performance of P[sbnd]CN catalyst was mainly assigned to the increased surface area and low recombination rate of the photogenerated charge carriers. Furthermore, the degradation was greatly influenced in the presence of scavengers, suggesting the crucial role of ^[rad]O2 ⁻ radicals on the performance. The photoactivity was strongly affected by water matrix, which the degradation efficiency altered with high concentrations of anions. In addition, reusability tests revealed that the catalyst was stable until fifth cycle. This work provides a new insight for intercalation of the photocatalyst using a hyperbranched copolymer for water treatment applications.

Anahtar Kelimeler

Carbon nitride | Hyperbranched copolymer | Intercalation | Photocatalysis | π-π interaction

Science Direct

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
SCOPUS	33

Novel metal-free intercalation of g-C3N4 using hyperbranched copolymer for efficient photocatalytic degradation of tetracycline

Dergi Adı	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Yayıncı	Elsevier B.V.
Açık Erişim	Hayır
ISSN	1010-6030
E-ISSN	1873-2666
CiteScore	7,8
SJR	0,694
SNIP	0,842

Novel metal-free intercalation of g-C3N4 using hyperbranched copolymer for efficient photocatalytic degradation of tetracycline

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