Quaternary Ag/AgCl/TiO2/MWCNTs nanocomposite: an efficient visible-light driven plasmonic photocatalyst for degradation of 2,4-dichlorophenol

Abstract

a b s t r a c tIn this research, we developed a facile method to synthesize quaternary plasmonic photocatalysts Ag/AgCl/TiO 2 /MWCNTs with a high photocatalytic performance for degradation of 2,4-dichlorophenol (2,4-DCP) under visible light. The prepared samples were characterized by different analyses such as X-ray diffraction, scanning electron microscopy, energy dispersive X-ray, ultraviolet-visible diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, N 2 physisorption, and transmission electron microscopy. The prepared samples exhibited highly visible-light photocatalytic efficiency for degradation of 2,4-DCP in aqueous solution. In the presence of pure TiO 2 and quaternary Ag/AgCl/ TiO 2 /MWCNTs nanocomposite, we obtained 40% and almost 100% degradations of 2,4-DCP under visible light after 180 min irradiation, respectively. The excellent visible light photocatalytic activity of Ag/AgCl/TiO 2 /MWCNTs samples can be attributed to the surface plasmon resonance effect of Ag nanoparticles anchored on AgCl particles and adsorption ability of MWCNTs.

Dye Contaminants Removal via the Photocatalytic Activity of Metal Oxides-Supported Ag and AgCl Under Visible Light Irradiation

“…The vibration *3,400 cm -1 can be assigned to the hydroxyl groups of TiO 2 or ZnO. At all samples, the vibration at *1,630 cm -1 is due to the bending vibration of OH bond of chemisorbed and/or physisorbed water molecules (Liu et al, 2017;Seirafi et al, 2018). For Ag/AgCl/TiO 2 and Ag/AgCl/ZnO, a new peak appeared at *1,385 cm -1 attributed to the interaction between AgNP and TiO 2 or ZnO that caused by Ag/AgCl deposited on the TiO 2 or ZnO surface (García-Serrano et al, 2009).…”