Ag@AgCl nanoparticles grafted on carbon nanofiber: an efficient visible light plasmonic photocatalyst via bandgap reduction. (19th November 2022)

• Record Type: Journal Article
• Authors: Thao, Vu Dinh; Dung, Nguyen Trung; Ha, Nguyen Thu; Minh, Ho Ngoc; Duong, Hung Cong; Van Nguyen, To; Son, Luong Trung; Huy, Nguyen Nhat; Thu, Tran Viet
• Is Part Of: Nanotechnology. Volume 33:Number 47(2022)
• Publication Date: 2022-11-19
• Subjects: Ag@AgCl -- carbon nanofiber -- electrospinning -- photocatalysis; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac86db
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: A novel silver@silver chloride/carbon nanofiber (Ag@AgCl/CNF) hybrid was synthesized by electrospinning, heat treament, and subsequent in situ chemical oxidation strategy. The synthesized materials were characterized using x-ray diffraction, Fourier-transform infrared, UV–Vis diffuse reflectance spectroscopy, scanning electron microscopy, and energy dispersive x-ray. The experimental results reveal that the electrospun AgNO3 /PAN was carbonized and reduced to Ag/CNF, the Ag/CNF was then partly oxidized to form Ag@AgCl/CNF in which Ag@AgCl nanoparticles (ca. 10–20 nm in diameter) were uniformly bounded to CNFs (ca. 165 nm in diameter). The obtained Ag@AgCl/CNF was employed for Na2 S2 O8 activation under visible light irradiation to treat Rhodamine B (RhB). A remarkable RhB removal of ca. 94.68% was achieved under optimal conditions, and the influence of various parameters on removal efficiency was studied. Quenching experiments revealed that HO, SO4 −, 1 O2, and O2 − were major reactive oxygen species, in which O2 − played a pivotal role in RhB degradation. A possible mechanistic route for RhB degradation was proposed.