title: Zirconium and silver co-doped TiO2 nanoparticles as visible light catalyst for reduction of 4-nitrophenol, degradation of methyl orange and methylene blue.
abstract: Catalytic activity of Zr and Ag co-doped TiO2 nanoparticles on the reduction of 4-nitrophenol, degradation of methylene blue and methyl orange was studied using sodium borohydride as reducing agent. The nanoparticles were characterized using X-ray diffraction, energy dispersive X-ray, high resolution transmission electron microscopy, selected area electron diffraction and UV-Vis spectroscopy. The rate of the reduction/degradation was found to increase with increasing amount of the photocatalyst which could be attributed to higher dispersity and small size of the nanoparticles. The catalytic activity of Zr and Ag co-doped TiO2 nanoparticles showed no significant difference even after recycling the catalyst four times indicating a promising potential for industrial application of the prepared photocatalyst.
authors.affiliation: Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632 014, India.
authors.forename: Saraschandra
authors.initials: S
authors.lastname: Naraginti
authors.affiliation: School of Mechanical and Building Sciences, VIT University, Vellore 632 014, India.
authors.forename: Finian Bernard
authors.initials: FB
authors.lastname: Stephen
authors.affiliation: School of Mechanical and Building Sciences, VIT University, Vellore 632 014, India.
authors.forename: Adhithya
authors.initials: A
authors.lastname: Radhakrishnan
authors.affiliation: Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632 014, India. Electronic address: svkmr7627@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Sivakumar
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D002384:Catalysis / Q000528:radiation effects; D004785:Environmental Pollutants / Q000032:analysis; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D008751:Methylene Blue / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D009596:Nitrophenols / Q000737:chemistry*; D010084:Oxidation-Reduction; D012834:Silver / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction; D015040:Zirconium / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D004785:Environmental Pollutants; D009596:Nitrophenols; C009495:titanium dioxide; D012834:Silver; C100258:methyl orange; D015040:Zirconium; D014025:Titanium; D008751:Methylene Blue; C024836:4-nitrophenol
keywords: 4-Nitrophenol; Methyl orange; Methylene blue; Photocatalyst; Visible light