Open AccessSynthesis, Characterization and Photocatalytic Performance of Poly-3-Thenoic Acid/Cu-TiO2 Nanohybrid for Efficient Visible Light Assisted Degradation of Bismarck Brown R
Author(s) -
Imandi Manga Raju,
T. Siva Rao,
Sankara Rao Miditana
Publication year - 2022
Publication title -
trends in sciences
Language(s) - English
Resource type - Journals
ISSN - 2774-0226
DOI - 10.48048/tis.2022.1715
Subject(s) - photocatalysis , anatase , materials science , diffuse reflectance infrared fourier transform , fourier transform infrared spectroscopy , scanning electron microscope , bet theory , visible spectrum , polymerization , chemical engineering , polymer , band gap , nanoparticle , nuclear chemistry , catalysis , nanotechnology , chemistry , organic chemistry , composite material , optoelectronics , engineering
The present work reported on the synthesis and characterization of Poly-3-Thenoic acid/Cu-TiO2 nanohybrid (PCuT) for the photocatalytic degradation of organic azo dye pollutant from wastewater. The as-synthesized nanohybrid by an in-situ modified sol-gel method including chemical oxidative polymerization was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, UV-visible diffuse reflectance spectroscopy (UV-vis.DRS), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM) and Brunauer-Emmet-Teller (BET) surface area analysis. The characterization results revealed the formation of small aggregates of polymer contained high crystalline anatase TiO2 nanoparticles (XRD) with narrowed bandgap energy (UV-vis.DRS), decreased particle size (TEM) with smooth surface morphology (SEM) and large surface area (BET). All the constituent elements of the polymer and Cu-TiO2 were found in the PCuT nanohybrid material (EDX) and their chemical interaction studied by FT-IR confirmed the stability of the nanohybrid. The photocatalytic activity of the nanohybrid was tested by the degradation of Bismarck Brown R dye under visible light irradiation. To enhance the photocatalytic efficiency, effects of various catalyst/dye reaction parameters such as polymer content, solution pH, catalyst dosage, and initial dye concentration were studied and optimized.
HIGHLIGHTS
Poly-3-Thenoic acid/Cu-TiO2 nanohybrid material was successfully synthesized by in situ modified sol-gel process
Poly-3-Thenoic acid has enhanced the visible light absorption capacity of anatase TiO2 in nanohybrids
Electron-hole recombination in TiO2 was effectively inhibited by Cu doping
Bismark Brown R, an organic pollutant was successfully degraded in 75 min of visible light irradiation
GRAPHICAL ABSTRACT