Zinc oxide-cellulose nanocomposite and preparation method thereof
AssigneeInha-Industry Partnership Institute
InventorsJae Hwan Kim, Hyun U Ko
Life of this patent
Estimating the term…
Abstract
The present invention relates to a zinc oxide-cellulose nanocomposite made of cellulose and zinc oxide nanoparticles and to a preparation method thereof. The nanocomposite of the present invention is prepared by producing zinc oxide nanoparticles as seeds on the surface and/or inside of a cellulose film and growing the seeds into zinc oxide crystals to form a zinc oxide layer strongly attached to the cellulose film. The nanocomposite of the present invention has significantly improved piezoelectricity compared to simple cellulose piezoelectric paper and may be used for LEDs and photovoltaic power generation devices thanks to zinc oxide doped therein.
Claims8
A cellulose-zinc oxide nanocomposite having a dense zinc oxide layer formed by producing zinc oxide nanoparticles as seeds on a surface and/or inside of a cellulose film and growing the seeds into zinc oxide crystals.
A method for preparing a zinc oxide-cellulose nanocomposite, the method comprising the steps of:
- preparing a cellulose film;
- producing zinc oxide seeds on a surface and/or inside of the cellulose film;
- and
- forming a zinc oxide layer on the cellulose film by growing zinc oxide crystals from the zinc oxide seeds.
A method for preparing a cellulose-zinc oxide nanocomposite, the method comprising the steps of:
- mixing an organic solvent with a surfactant at a weight ratio of 1:3-1:10 and adding zinc oxide nanoparticles thereto to prepare a mixed solution;
- adding a cellulose solution to the mixed solution, followed by stirring;
- subjecting the stirred solution to a casting process and a washing process to prepare a cellulose film having zinc oxide seeds produced thereon and/or therein;
- and
- forming a zinc oxide layer on the cellulose film by growing zinc oxide crystals from the zinc oxide seeds.
Dependencies are inferred from the claim text.