title: Euphorbia heterophylla leaf extract mediated green synthesis of Ag/TiO2 nanocomposite and investigation of its excellent catalytic activity for reduction of variety of dyes in water.
abstract: This work reports a facile and green synthesis of Ag/TiO2 nanocomposite by extract of leaves of Euphorbia heterophylla without any stabilizer or surfactant. The green synthesized Ag/TiO2 nanocomposite was characterized by field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectroscopy (EDS), fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction analysis (XRD) and UV-vis. The Ag/TiO2 nanocomposite was found to be effective catalyst for reduction of various dyes, such as 4-nitrophenol (4-NP), Methyl orange (MO), Congo red (CR) and Methylene blue (MB) in the presence of NaBH4 in water at room temperature. Catalysis reactions were monitored by employing UV-vis spectroscopy. Catalysis reactions followed pseudo-first order rate equation. The catalyst can be recovered and reused several times without significant loss of its catalytic activity.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran.
authors.forename: Monireh
authors.initials: M
authors.lastname: Atarod
authors.affiliation: Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran. Electronic address: mahmoudnasr81@gmail.com.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Nasrollahzadeh
authors.affiliation: Department of Petroleum Geoscience, Faculty of Science, Soran University, PO Box 624, Soran, Kurdistan Regional Government, Iraq.
authors.forename: S
authors.initials: S
authors.lastname: Mohammad Sajadi
mesh_terms: D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D028481:Euphorbia / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D010936:Plant Extracts; D014867:Water; C009495:titanium dioxide; D012834:Silver; D014025:Titanium
keywords: Ag/TiO(2) nanocomposite; Euphorbia heterophylla; NaBH(4); Organic dyes; Water