title: Renewable hybrid nanocatalyst from magnetite and cellulose for treatment of textile effluents.
abstract: A hybrid catalyst was prepared using cellulose nanofibrils and magnetite to degrade organic compounds. Cellulose nanofibrils were isolated by mechanical defibrillation producing a suspension used as a matrix for magnetite particles. The solution of nanofibrils and magnetite was dried and milled resulting in a catalyst with a 1:1 ratio of cellulose and magnetite that was chemically and physically characterized using light, scanning electron and transmission electron microscopies, specific surface area analysis, vibrating sample magnetometry, thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction, catalytic potential and degradation kinetics. Results showed good dispersion of the active phase, magnetite, in the mat of cellulosic nanofibrils. Leaching and re-use tests showed that catalytic activity was not lost over several cycles. The hybrid material produced was tested for degradation of methylene blue dye in Fenton-like reactions resulting in a potential catalyst for use in degradation of organic compounds.
authors.affiliation: Department of Chemistry, Federal University of Lavras, CP 3037 Lavras-MG, Brazil. Electronic address: anacarolinacarantes@gmail.com.
authors.forename: Ana Carolina Cunha
authors.initials: ACC
authors.lastname: Arantes
authors.affiliation: Department of Chemistry, Federal University of Lavras, CP 3037 Lavras-MG, Brazil. Electronic address: crisalmeida@quimica.ufla.br.
authors.forename: Crislaine das Graças
authors.initials: CDG
authors.lastname: Almeida
authors.affiliation: Department of Chemistry, Federal University of Lavras, CP 3037 Lavras-MG, Brazil. Electronic address: ligiane.dauzacker@gmail.com.
authors.forename: Ligiane Carolina Leite
authors.initials: LCL
authors.lastname: Dauzacker
authors.affiliation: Department of Chemistry, Federal University of Lavras, CP 3037 Lavras-MG, Brazil. Electronic address: bianchi@dqi.ufla.br.
authors.forename: Maria Lucia
authors.initials: ML
authors.lastname: Bianchi
authors.affiliation: Bioproducts Research Unit, WRRC, ARS-USDA, 800 Buchanan St., Albany, CA 94710, USA. Electronic address: de.wood@ars.usda.gov.
authors.forename: Delilah F
authors.initials: DF
authors.lastname: Wood
authors.affiliation: Bioproducts Research Unit, WRRC, ARS-USDA, 800 Buchanan St., Albany, CA 94710, USA. Electronic address: tina.williams@ars.usda.gov.
authors.forename: Tina G
authors.initials: TG
authors.lastname: Williams
authors.affiliation: Bioproducts Research Unit, WRRC, ARS-USDA, 800 Buchanan St., Albany, CA 94710, USA. Electronic address: bill.orts@ars.usda.gov.
authors.forename: William J
authors.initials: WJ
authors.lastname: Orts
authors.affiliation: Department of Forest Sciences, Federal University of Lavras, CP 3037 Lavras-MG, Brazil. Electronic address: gustavotonoli@dcf.ufla.br.
authors.forename: Gustavo Henrique Denzin
authors.initials: GHD
authors.lastname: Tonoli
mesh_terms: D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D007220:Industrial Waste; D053758:Nanoparticles; D013784:Textiles; D018508:Water Purification; D014961:X-Ray Diffraction
chemical_list: D007220:Industrial Waste; D002482:Cellulose; D052203:Ferrosoferric Oxide
keywords: Catalyst; Cellulose; Crystallite; Magnetite; Nanofibrils