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公开(公告)号：US10106408B2
公开(公告)日：2018-10-23
申请号：US15257481
申请日：2016-09-06
发明人： Woo-Sik Kim , Taekyung Yu , Zaohui Wu
摘要： 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.
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2.发明授权公开(公告)号：US10226822B2
公开(公告)日：2019-03-12
申请号：US14859548
申请日：2015-09-21
发明人： Woo-Sik Kim , Taekyung Yu , Aasim Shahzad , Minyoung Yi
摘要： 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.
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公开(公告)号：US10479696B2
公开(公告)日：2019-11-19
申请号：US15178609
申请日：2016-06-10
发明人： Jinsoo Kim , Sang Hyuk Im , Su Ha , Han-Seul Choi , Woo-Sik Kim , Sung Pil Yoon , Jonghee Han
摘要： Provided is a method for preparing molybdenum oxide nanoparticles, including (a) preparing a precursor solution by dissolving a molybdenum salt in a first polar solvent, (b) generating an aerosol by applying ultrasonic waves to the precursor solution, and spraying the aerosol to a pre-heated reactor using a carrier gas, (c) obtaining molybdenum oxide micron-sized particles by pyrolyzing the aerosol, and (d) obtaining molybdenum oxide nanoparticles by dispersing the molybdenum oxide micron-sized particles in a second polar solvent and performing a solvothermal reduction reaction.
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公开(公告)号：US20170081188A1
公开(公告)日：2017-03-23
申请号：US15257481
申请日：2016-09-06
发明人： Woo-Sik Kim , Taekyung Yu , Zaohui Wu
CPC分类号： C01B11/18 , B01J19/0066 , B01J19/0093 , B01J19/1806 , B01J19/1843 , B01J19/244 , B01J2219/00058 , B01J2219/00081 , B01J2219/00094 , B01J2219/00797 , B01J2219/00873 , B01J2219/00889 , B01J2219/00961
摘要： 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.
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公开(公告)号：US10464136B2
公开(公告)日：2019-11-05
申请号：US15262180
申请日：2016-09-12
发明人： Taekyung Yu , Woo-Sik Kim , Zengmin Tang
摘要： 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.
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