Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries

The structural, optical and photocatalytic properties of two zinc oxides prepared from spent alkaline batteries were analysed. After leaching the anode of alkaline batteries, zinc was precipitated from the leachate liquor by introducing oxalic acid (O-ZnO) or sodium carbonate (C-ZnO). The structure...

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Autores principales: Gallegos, María Victoria, Aparicio, Francisca, Peluso, Miguel Andrés, Damonte, Laura Cristina, Sambeth, Jorge Enrique
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Química
Física
Oxides
Optical properties
Positron annihilation spectroscopy
Catalytic properties
Defects
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97636
https://ri.conicet.gov.ar/11336/85480
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97636
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Física
Oxides
Optical properties
Positron annihilation spectroscopy
Catalytic properties
Defects
spellingShingle Química
Física
Oxides
Optical properties
Positron annihilation spectroscopy
Catalytic properties
Defects
Gallegos, María Victoria
Aparicio, Francisca
Peluso, Miguel Andrés
Damonte, Laura Cristina
Sambeth, Jorge Enrique
Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
topic_facet Química
Física
Oxides
Optical properties
Positron annihilation spectroscopy
Catalytic properties
Defects
description The structural, optical and photocatalytic properties of two zinc oxides prepared from spent alkaline batteries were analysed. After leaching the anode of alkaline batteries, zinc was precipitated from the leachate liquor by introducing oxalic acid (O-ZnO) or sodium carbonate (C-ZnO). The structure of ZnO samples were analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), SBET, DRS-UV-vis spectroscopy and positron annihilation lifetime spectroscopy (PALS). Both oxides present the ZnO wurzite structure and similar morphology. C-ZnO presents a cell lower lattice parameters and bang gap energy (2.99 eV) than O-ZnO (3.05 eV), possibly due to higher concentration of oxygen vacancies. The photocatalytic activity in the degradation of methylene blue (MB) of O-ZnO (achieving 70% MB degradation at 90 min) was superior to C-ZnO, due to its higher surface area and degree of crystallinity and lower bulk/surface defects ratio.
format Articulo
Preprint
author Gallegos, María Victoria
Aparicio, Francisca
Peluso, Miguel Andrés
Damonte, Laura Cristina
Sambeth, Jorge Enrique
author_facet Gallegos, María Victoria
Aparicio, Francisca
Peluso, Miguel Andrés
Damonte, Laura Cristina
Sambeth, Jorge Enrique
author_sort Gallegos, María Victoria
title Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
title_short Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
title_full Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
title_fullStr Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
title_full_unstemmed Structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
title_sort structural, optical and photocatalytic properties of zinc oxides obtained from spent alkaline batteries
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/97636
https://ri.conicet.gov.ar/11336/85480
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