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1.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：US09962686B2
公开(公告)日：2018-05-08
申请号：US15428123
申请日：2017-02-08
发明人： Taekyung Yu , WooSik Kim , Aasim Shahzad , Minyoung Yi
IPC分类号： B01J27/10 , B01J35/00 , B01J23/50 , B01J27/08 , B01J31/26 , B01J31/06 , B01J35/08 , B01J37/04 , B01J37/03 , B01J37/02 , C02F1/32 , C02F1/74 , B01J31/02
CPC分类号： B01J27/10 , B01J23/50 , B01J27/08 , B01J31/0241 , B01J31/06 , B01J31/064 , B01J31/26 , B01J35/0006 , B01J35/0013 , B01J35/004 , B01J35/08 , B01J37/0221 , B01J37/031 , B01J37/04 , C02F1/325 , C02F1/725 , C02F1/74 , C02F2305/08 , C02F2305/10
摘要： 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.
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