Abstract:
The present invention relates to a composite including hydroxyapatite, chitosan, chitin, or a derivative of the same, and catechol or a derivative of the same; an organic reinforcing material composition including the composite, a product manufactured with the organic reinforcing material composition, and a method to manufacture the composite. The composite provided in the present invention is a material with catechol or an added catechol derivative, which has characteristics of being harmless to a human body, shows strong mechanical strength to be used as various biomaterials such as an artificial sinew, an artificial ligament, and an artificial dental material; and is useful for various kinds of required materials, without limitations.
Abstract:
The present invention relates to a method for preparing a porous tin-carbon-silica composite. A composite with a form in which tin material is contained in a carbon-silica supporter is synthesized with one-pot by self-assembling block copolymers and a precursor. The synthesized tin-carbon-silica composite has high volume and stability when being applied as a cathode material for a lithium-ion battery. Provided is a method for preparing a composite in which metal is dispersed on the carbon-silica supporter, comprising a step of self-assembling a precursor mixture including a metal precursor, a carbon precursor and a silica precursor; a block copolymer including a block with which the metal precursor is combined and a block with which the carbon precursor and the silica precursor are combined; and a mixture containing solvents.
Abstract:
PURPOSE: Nanoparticle composite of nickel ferrite is provided to exclude an additional process for introducing a nickel ion for protein separation and manufacture a magnetic nanoparticle composite easily and economically through one step of a hydrothermal crystallization method. CONSTITUTION: A manufacturing method of nanoparticle composite of nickel ferrite comprises the following steps: (1) manufacturing a mixed solution by mixing a nickel compound precursor and an iron compound precursor with a polyol solvent; (2) adding a pH control agent; (3) adding and stirring in a Ni2+ oxidizer; and (4) forming a nanoparticle compound precursor by heating the mixed solution and revivifying nickel salt and iron salt. The polyol solvent is selected form the group consisting of EG(Ethylene Glycol), DEG(Diethylene Glycol), TEG(Triethylene Glycol), TTEG(Tetraethylene Glycol) and TtEg(Tetratethylene Glycol). The pH control agent is an acetate salt compound. The Ni2+ oxidant is KNO3 and is added to be 0.1 g or more to 1mL of the mixed solution. The nickel ferrite nanoparticle composite has a reverse spinel structure.
Abstract:
PURPOSE: A dye sensitive solar cell including a counter electrode with a mesoporous carbon electrode on a transparent substrate and a manufacturing method thereof are provided to obtain high photoelectric conversion efficiency by using mesoporous carbon catalyst with a large pore. CONSTITUTION: A counter electrode(20) includes a mesoporous carbon electrode(25) formed on a transparent substrate(21). The mesoporous carbon electrode is formed by using an aligned mesoporous carbon electrode catalyst. The mesoporous carbon electrode catalyst has an amorphous carbon wall. The mesoporous carbon electrode provides a catalyst reaction unit for a reduction of a tri-iodide. An operation electrode is made of dye absorbed in a nano oxide layer formed on the transparent substrate.