Facile construction of novel ZnO and TiO2 combined g-C3N4 nanocomposite for superior visible-light photocatalytic organic pollutant degradation. (19th September 2022)

• Record Type: Journal Article
• Authors: Rajendran, Renji; Vignesh, Shanmugam; Sasireka, Asokan; Kalyana Sundar, Jeyaperumal; Manickam, Srinivasan; Chandrasekaran, Sharmila; Shkir, Mohd; AlFaify, S.; Palanivel, Baskaran; Arumugam, Elangovan; Vairamuthu, Raj
• Is Part Of: Materials technology. Volume 37:Number 11(2022)
• Page Start: 1651
• Page End: 1664
• Publication Date: 2022-09-19
• Subjects: Photocatalysts -- nanocomposites -- visible-light -- Rhodamine B dye -- recycling stability -- charge transfer; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1080/10667857.2021.1968232
• Languages: English
• ISSNs: 1066-7857

Abstract

ABSTRACT: A novel g-C3 N4 /ZnO-TiO2 nanocomposite was prepared by facile calcination and hydrothermal assisted route to boost the photocatalytic efficiency of g-C3 N4 . The structural, morphology and optical properties of as-obtained nanocomposites (NCs) were examined by various physicochemical methods such as XRD, FT-IR, FESEM-EDX, HR-TEM, UV-DRS and PL spectra relatively. The as-obtained g-C3 N4 /ZnO-TiO2 heterojunction NCs displays an optimum efficiency (93.6%) and high photo-degradation rate constant towards the photo-degradation of RhB dye in 75 min under visible-light exposure. Likewise, the synergistic effects on heterostructure strong-coupling interfaces assembly of g-C3 N4 and TiO2 /ZnO NPs, which facilitates the excellent photo-excited charge separation efficiency, suppressing the recombination rate and also widening the visible-light fascination ability. Hence, the resulting in a prolonged lifetime leading to continuous generation of h + and OH − species which were eventually improved the photo-degradation process. Also, the as-obtained hybrid g-C3 N4 /ZnO-TiO2 photocatalysts (PCs) revealed superior recycling stability. Moreover, a probable photocatalytic reaction mechanism of the novel PCs was also suggested.