Abstract: The present disclosure relates to a dispersed metal nanoparticle synthesis method and metal nanoparticles prepared thereby. Specifically, the present disclosure relates to a method of effectively preparing a dispersed metal nanoparticle using Taylor vortex flow even when using a small amount of stabilizer or using no stabilizer, and well-dispersed nanoparticles obtained thereby.

Abstract: Provided is a preparation method of copper nanostructures, characterized in that a copper precursor including halide is reacted with polyethyleneimine (PEI) and a reducing agent in an aqueous solution. According to this method, the copper nanostructures may be easily prepared in a sphere, wire, or plate form, and high-quality copper nanostructures may be produced with a high production yield of 90% or more. This method is also appropriate for large-scale production.

Abstract: The present invention relates to a method for preparing metal nanoparticles, specifically, by reducing a precursor of metal or metal oxide in an aqueous solution, wherein polyethylenimine and an additional reducing agent are used, thereby obtaining metal nanoparticles having superior properties in improved yield. According to the preparation method of the present invention, metal nanoparticles can be prepared at a higher concentration of metal precursor. Further, a short reaction time and the use of a solvent that is easy to handle, such as water, allow mass production of metal nanoparticles with high efficiency. Moreover, nanoparticles having a superior property can be prepared without a high-temperature treatment over 100° C. Accordingly, the method for preparing metal nanoparticles of the present invention may innovatively simplify the preparation processes, and may also improve the working environment. Thus, it is useful for mass production of metal nanoparticles.

Abstract: The present invention relates to a method for conducting deracemization using Taylor flow and a device for conducting the same. With respect to the deracemization of a racemate, it may be efficiently conducted with improved rapidity when a racemate-containing fluid is placed under Taylor flow.

Abstract: The present invention relates to a hybrid nanostructured photocatalyst, comprising a first nanoparticle comprising silver halide (AgX); a second nanoparticle, which is formed on an outer surface of the first nanoparticle and comprises Ag; and a polymer formed on any one outer surface of the first nanoparticle and the second nanoparticle, and a preparation method thereof. Specifically, the present invention provides a hybrid nanostructured photocatalyst having a high photocatalytic activity in a visible light region and a preparation method thereof.

Abstract: The present invention relates to a hybrid nanostructured photocatalyst, comprising a first nanoparticle comprising silver halide (AgX); a second nanoparticle, which is formed on an outer surface of the first nanoparticle and comprises Ag; and a polymer formed on any one outer surface of the first nanoparticle and the second nanoparticle, and a preparation method thereof. Specifically, the present invention provides a hybrid nanostructured photocatalyst having a high photocatalytic activity in a visible light region and a preparation method thereof.

Abstract: Provided is a preparation method of copper nanostructures, characterized in that a copper precursor including halide is reacted with polyethyleneimine (PEI) and a reducing agent in an aqueous solution. According to this method, the copper nanostructures may be easily prepared in a sphere, wire, or plate form, and high-quality copper nanostructures may be produced with a high production yield of 90% or more. This method is also appropriate for large-scale production.

Abstract: The present invention relates to a method for conducting deracemization using Taylor flow and a device for conducting the same. With respect to the deracemization of a racemate, it may be efficiently conducted with improved rapidity when a racemate-containing fluid is placed under Taylor flow.

Abstract: The present invention relates to a method for preparing metal nanoparticles, specifically, by reducing a precursor of metal or metal oxide in an aqueous solution, wherein polyethylenimine and an additional reducing agent are used, thereby obtaining metal nanoparticles having superior properties in improved yield. According to the preparation method of the present invention, metal nanoparticles can be prepared at a higher concentration of metal precursor. Further, a short reaction time and the use of a solvent that is easy to handle, such as water, allow mass production of metal nanoparticles with high efficiency. Moreover, nanoparticles having a superior property can be prepared without a high-temperature treatment over 100° C. Accordingly, the method for preparing metal nanoparticles of the present invention may innovatively simplify the preparation processes, and may also improve the working environment. Thus, it is useful for mass production of metal nanoparticles.

Abstract: The present invention provides a new method for the production of cerium oxide (CeO2) nanocrystals having various sizes and various shapes via hydrolytic sol-gel reactions or non-hydrolytic sol-gel reactions. More specifically, the method synthesizing cerium oxide nanocrystals comprises; i) preparing a cerium-surfactant complex by reacting a cerium precursor and a surfactant in a organic solvent; and ii) aging said cerium-surfactant complex in an ether at a temperature of 100° C.-360° C.

Abstract: The present invention relates to a goethite nanotube. Particularly, the present invention is directed to goethite nanotubes, which can be used as a catalyst relating to environment or a drug delivery system, and process for preparing the goethite nanotube, and process for preparing magnetite and hematite nanoparticles.

Abstract: The present invention provides a new method for the production of cerium oxide (CeO2) nanocrystals having various sizes and various shapes via hydrolytic sol-gel reactions or non-hydrolytic sol-gel reactions. More specifically, the method synthesizing cerium oxide nanocrystals comprises; i) preparing a cerium-surfactant complex by reacting a cerium precursor and a surfactant in a organic solvent; and ii) aging said cerium-surfactant complex in an ether at a temperature of 100° C.-360° C.