公开(公告)号：KR100807171B1

公开(公告)日：2008-02-27

申请号：KR1020070067220

申请日：2007-07-04

Applicant: 재단법인대구경북과학기술원

Inventor： 김순현 ,  이수근 ,  서운영 ,  김참 ,  강진규

IPC: B01J21/06 ,  B01J23/42 ,  C01G23/047

Abstract: 본 발명은 이산화 티탄 격자 내에 백금이온 및 질소이온이 동시에 도핑되어 있는 것을 특징으로 하는 이산화 티탄 광촉매를 제공한다. 상기 이산화 티탄 광촉매는 백금이온과 질소이온이 이산화 티탄 격자 내에 각각 도핑된 경우보다 훨씬 높은 효율을 갖는 가시광 활성을 나타낸다.
광촉매, 가시광

公开(公告)号：KR1020070111653A

公开(公告)日：2007-11-22

申请号：KR1020060044725

申请日：2006-05-18

Applicant: 재단법인대구경북과학기술원

Inventor： 김순현 ,  이수근 ,  서운영 ,  김참 ,  강진규

IPC: B01J21/06 ,  C01G23/047 ,  C01G23/053 ,  B82Y30/00

CPC classification number: B01J35/004 ,  B01J21/063 ,  B01J37/0018 ,  B01J37/0072 ,  C01G23/047 ,  C01G23/053

Abstract: A noble titanium dioxide photocatalyst and a method of effectively preparing the titanium dioxide photocatalyst are provided to have a wide wavelength range of absorbable visible lights and be very excellent in absorption efficiency of the visible lights. A method of preparing a titanium dioxide photocatalyst comprises the steps of: dissolving a platinum ion precursor into a first solvent to prepare a platinum ion precursor solution; dissolving a titanium dioxide precursor into a second solvent to prepare a titanium dioxide precursor solution; mixing and primarily stirring the platinum ion precursor solution and the titanium dioxide precursor solution; adding a nitrogen ion precursor into a mixed solution of the platinum ion precursor solution and the titanium dioxide precursor solution and secondly stirring the nitrogen ion precursor and the mixed solution to produce a nano colloidal solution; and evaporating the nano colloidal solution at a reduced pressure under a temperature of 30 to 50 deg.C to obtain a powdered titanium dioxide photocatalyst. Further, the platinum ion precursor is Ti(OC3H7)4.

Abstract translation: 提供了一种贵重二氧化钛光催化剂和有效制备二氧化钛光催化剂的方法，其具有可吸收的可见光的宽波长范围，并且对可见光的吸收效率非常优异。 制备二氧化钛光催化剂的方法包括以下步骤：将铂离子前体溶解在第一溶剂中以制备铂离子前体溶液; 将二氧化钛前体溶解在第二溶剂中以制备二氧化钛前体溶液; 混合并主要搅拌铂离子前体溶液和二氧化钛前体溶液; 向铂离子前体溶液和二氧化钛前体溶液的混合溶液中加入氮离子前体，二次搅拌氮离子前体和混合溶液，制成纳米胶体溶液; 并在30〜50℃的温度下在减压下蒸发纳米胶体溶液，得到粉末状二氧化钛光催化剂。 此外，铂离子前体是Ti（OC 3 H 7）4。

公开(公告)号：KR100762255B1

公开(公告)日：2007-10-04

申请号：KR1020060134579

申请日：2006-12-27

Applicant: 재단법인대구경북과학기술원 ,  영남대학교 산학협력단

Inventor： 이성준 ,  이세근 ,  김호영 ,  도석주 ,  김참 ,  류원석

IPC: D01D5/00 ,  B82Y40/00

CPC classification number: D01D5/003 ,  B82Y40/00 ,  D01F6/62

Abstract: A method for manufacturing nanofiber is provided to produce a nonwoven fabric formed of continued nanofiber without beads, by mixing and spinning polymers having the same molecular structure and different molecular weights. A spinning solution is formed by mixing and dissolving a plurality of polymers in a solvent, wherein the polymers have the same molecular structure and different molecular weights(S110). The spinning solution is electro-spun and enriched to prepare nanofiber(S120). Each of the polymers has a weight percents of at least 10%, based on the total weight of the polymers. The plurality of polymers are polycaprolactone substances having different molecular weights.

Abstract translation: 提供一种制造纳米纤维的方法，通过混合并纺丝具有相同分子结构和不同分子量的聚合物，制造由连续纳米纤维形成的无珠的无纺织物。 通过将多种聚合物混合并溶解在溶剂中形成纺丝溶液，其中聚合物具有相同的分子结构和不同的分子量（S110）。 将纺丝溶液电纺并富集以制备纳米纤维（S120）。 基于聚合物的总重量，每种聚合物的重量百分数至少为10％。 多种聚合物是具有不同分子量的聚己内酯物质。