Room temperature inorganic polycondensation of oxide (Cu2O and ZnO) nanoparticles and thin films preparation by the dip-coating technique

Oxide thin solid films were prepared by dip-coating into colloidal dispersions of oxide nanoparticles stabilized at room temperature without the use of chelating or complex organic dispersing agents. Crystalline oxide nanoparticles were obtained by inorganic polycondensation and characterized by X-r...

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Bibliographic Details
Published in:Thin solid films 2015-08, Vol.589, p.872-876
Main Authors: Salek, G., Tenailleau, C., Dufour, P., Guillemet-Fritsch, S.
Format: Article
Language:English
Subjects:
COATINGS
Colloidal suspension
Colloids
Condensed Matter
COPPER OXIDE
Cuprite
CUPROUS OXIDE
Dip coatings
Dispersions
Engineering Sciences
ETHYL ALCOHOL
Materials
Materials Science
Nanoparticles
Optical properties
ORGANIC COMPOUNDS
OXIDES
PARTICLE SIZE AND SHAPE
PARTICLES
Physics
Precipitation method
THIN FILMS
ZINC OXIDE
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Summary:Oxide thin solid films were prepared by dip-coating into colloidal dispersions of oxide nanoparticles stabilized at room temperature without the use of chelating or complex organic dispersing agents. Crystalline oxide nanoparticles were obtained by inorganic polycondensation and characterized by X-ray diffraction and field emission gun scanning electron microscopy. Water and ethanol synthesis and solution stabilization of oxide nanoparticle method was optimized to prepare two different structural and compositional materials, namely Cu2O and ZnO. The influence of hydrodynamic parameters over the particle shape and size is discussed. Spherical and rod shape nanoparticles were formed for Cu2O and ZnO, respectively. Isoelectric point values of 7.5 and 8.2 were determined for cuprous and zinc oxides, respectively, after zeta potential measurements. A shear thinning and thixotropic behavior was observed in both colloidal sols after peptization at pH ~6 with dilute nitric acid. Every colloidal dispersion stabilized in a low cost and environmentally friendly azeotrope solution composed of 96vol.% of ethanol with water was used for the thin film preparation by the dip-coating technique. Optical properties of the light absorber cuprous oxide and transparent zinc oxide thin solid films were characterized by means of transmittance and reflectance measurements (300–1100nm). •Room temperature inorganic polycondensation of crystalline oxides•Water and ethanol synthesis and solution stabilization of oxide nanoparticles•Low cost method for thin solid film preparation
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2015.04.082