公开(公告)号：KR1020130070333A

公开(公告)日：2013-06-27

申请号：KR1020110137601

申请日：2011-12-19

Applicant: 서울대학교산학협력단

Inventor： 장정식 ,  황선혜 ,  송희

IPC: B82B3/00 ,  D01F9/08 ,  B82Y40/00

CPC classification number: C01G23/047 ,  B82Y40/00 ,  C01G9/02 ,  C01P2004/16 ,  D01F1/103 ,  D01F9/08

Abstract: PURPOSE: Fabrication of titanium dioxide nanofiber containing zinc oxide nanoparticles and an antibactericidal application of the same are provided to easily fabricate titanium dioxide nanofiber containing zinc oxide nanoparticles using a mixed solution of a titanium dioxide precursor, a zinc oxide precursor, and a polymer. CONSTITUTION: Fabrication of titanium dioxide nanofiber includes the following steps of: preparing the mixed solution of a titanium dioxide precursor, a zinc oxide precursor, polymer, and acetic acid; preparing polymer nanofiber, in which the titanium dioxide precursor and the zinc oxide precursor are mixed, by an electrospinning method; forming titanium dioxide from the titanium dioxide precursor by hydrolysis; and preparing titanium dioxide nanofiber containing zinc oxide nanoparticles by thermally treatment. The sizes of the voltages in the electrospinning method are in a range between 1-60kV. The thermal treatment temperature is in a range between 400-550°C, and the thermal treatment time is in a range between 1 and 4 hours.

Abstract translation: 目的：提供含有氧化锌纳米颗粒的二氧化钛纳米纤维及其杀菌应用的制备，以便使用二氧化钛前体，氧化锌前体和聚合物的混合溶液容易地制造含有氧化钛纳米颗粒的二氧化钛纳米纤维。 构成：二氧化钛纳米纤维的制造包括以下步骤：制备二氧化钛前体，氧化锌前体，聚合物和乙酸的混合溶液; 通过静电纺丝法制备其中二氧化钛前体和氧化锌前体混合的聚合物纳米纤维; 通过水解从二氧化钛前体形成二氧化钛; 并通过热处理制备含有氧化锌纳米颗粒的二氧化钛纳米纤维。 静电纺丝法中电压的大小在1-60kV之间。 热处理温度在400-550℃之间，热处理时间在1-4小时的范围内。

公开(公告)号：KR101311604B1

公开(公告)日：2013-09-26

申请号：KR1020120073732

申请日：2012-07-06

Applicant: 서울대학교산학협력단

Inventor： 장정식 ,  송희 ,  황선혜

IPC: H01L31/042 ,  H01L31/18

CPC classification number: Y02E10/542 ,  H01L31/042 ,  H01L31/18

Abstract: PURPOSE: A method for fabricating a dye-sensitized solar cell containing branched titania nanofibers as a scattering material is provided to increase a light path by scattering light absorbed by titania nanopaticles in an anode. CONSTITUTION: A titania nanofiber of an anatase crystalline phase is fabricated. The titania nanofiber is added to a mixture solution of a titania precursor, water, and hydrochloric acid. A titania branch of a rutile crystalline phase is grown on the surface of the titania nanofiber. The titania nanofiber with the titania branch is mixed with titania nanoparticle paste. The titania nanoparticle paste is applied to the anode for a dye-sensitized solar cell. [Reference numerals] (AA) Current density/mA cm^-2; (BB) Titanium dioxide nanoparticle; (CC) Titanium dioxide nanoparticle + titanium dioxide nanofiber with titanium dioxide branches grown; (DD) Voltage/mV

Abstract translation: 目的：提供一种制造含有支链二氧化钛纳米纤维作为散射材料的染料敏化太阳能电池的方法，以通过在阳极中散射由二氧化钛纳米颗粒吸收的光来增加光路。 构成：制造锐钛矿晶相的二氧化钛纳米纤维。 将二氧化钛纳米纤维加入到二氧化钛前体，水和盐酸的混合溶液中。 在二氧化钛纳米纤维的表面上生长金红石结晶相的二氧化钛分支。 将具有二氧化钛分支的二氧化钛纳米纤维与二氧化钛纳米颗粒糊混合。 将二氧化钛纳米粒子糊剂施加到染料敏化太阳能电池的阳极上。 （标号）（AA）电流密度/ mA cm ^ -2; （BB）二氧化钛纳米颗粒; （CC）二氧化钛纳米颗粒+二氧化钛纳米纤维与二氧化钛分枝生长; （DD）电压/ mV

公开(公告)号：KR1020130070317A

公开(公告)日：2013-06-27

申请号：KR1020110137573

申请日：2011-12-19

Applicant: 서울대학교산학협력단

Inventor： 장정식 ,  손수임 ,  김찬회 ,  황선혜 ,  송희

IPC: C01G23/047 ,  B01J13/04 ,  B01J2/00 ,  B82B3/00

Abstract: PURPOSE: A fabrication method of nano-hollow spheres using silica/titanium dioxide core/shell nanoparticles is provided to obtain titanium dioxide nano-hollow spheres of 150nm or less of diameters by thermally treating the silica/titanium dioxide core/shell nanoparticles and etching the silica core with hydrofluoric acid. CONSTITUTION: A fabrication method of nano-hollow sphere includes the following steps of: manufacturing silica/titanium dioxide core/shell nanoparticles; drying and thermally treating the silica/titanium dioxide core/shell nanoparticles; and etching the silica core of the thermally treated silica/titanium dioxide core/shell nanoparticles for 10 minutes to 3 hours using a hydrofluoric acid solution. The sizes of the silica/titanium dioxide core/shell nanoparticles are in a range between 10 and 150nm. The thermally treating temperature is in a range between 400 and 700°C. The concentration of the hydrofluoric acid solution is in a range between 0.5 and 5wt%.

Abstract translation: 目的：使用二氧化硅/二氧化钛核/壳纳米颗粒的纳米中空球的制造方法，通过热处理二氧化硅/二氧化钛核/壳纳米颗粒并蚀刻其直径为150nm或更小的二氧化钛纳米中空球体 硅胶与氢氟酸。 构成：纳米空心球的制造方法包括以下步骤：制备二氧化硅/二氧化钛核/壳纳米颗粒; 干燥和热处理二氧化硅/二氧化钛核/壳纳米颗粒; 并使用氢氟酸溶液将热处理的二氧化硅/二氧化钛核/壳纳米颗粒的二氧化硅核心蚀刻10分钟至3小时。 二氧化硅/二氧化钛核/壳纳米颗粒的尺寸在10至150nm的范围内。 热处理温度在400-700℃的范围内。 氢氟酸溶液的浓度为0.5〜5重量％。