公开(公告)号：KR100800588B1

公开(公告)日：2008-02-04

申请号：KR1020060054045

申请日：2006-06-15

Applicant: 한국산업기술대학교산학협력단

Inventor： 임실묵 ,  최우석

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

Abstract: 본 발명은 높은 광산화 반응력 보유 물질로 알려진 이산화티탄 광촉매의 제조방법에 관한 것으로, 야외 및 실내에서의 광촉매 효율성을 높이기 위한 이산화티탄제조법에 관한 것이다.
상기와 같은 목적을 달성하기 위한 본 발명의 구성은 건식법(진공증착법 또는 스퍼터링법) 또는 습식법(Sol-Gel법)으로 형성되고 이산화티탄을 이용하는 광촉매 제조방법에 있어서, 환원제 용액중에 백금을 양극전극으로 설치하고, 상기 이산화티탄 표면에 음극을 설치하여 전기분해에 의해 광촉매의 활성을 증가시키는 태양광 반응형 이산화티탄 광촉매재 제조방법을 특징으로 한다.
광촉매재, 이산화티탄, 태양광

公开(公告)号：KR1020070119425A

公开(公告)日：2007-12-20

申请号：KR1020060054045

申请日：2006-06-15

Applicant: 한국산업기술대학교산학협력단

Inventor： 임실묵 ,  최우석

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

CPC classification number: B01J37/036 ,  B01J21/063 ,  B01J35/004 ,  B01J37/348 ,  C01G23/047 ,  C01G23/053

Abstract: A preparation method of a titanium dioxide photocatalytic material reacting to sunlight is provided to allow sunlight of violet to indigo series having a wavelength of 350 to 480 nm to be used as a reaction source for oxidation by applying an additional process to a surface of a photocatalyst prepared by a conventional preparation method, thereby reducing a band gap from 3.0 eV to more or less of 2.5 to 2.6 eV. In a method for preparing a photocatalyst from titanium dioxide as a principal component by a dry process such as a vacuum deposition process or a sputtering process, or a wet process such as a sol-gel process, a preparation method of a titanium dioxide photocatalytic material reacting to sunlight comprises: installing a Pt electrode as an anode at a reducing agent; installing a cathode on a surface of the prepared titanium dioxide; performing a reduction reaction by electrolysis to increase activities of the photocatalyst; and oxidizing the photocatalyst by a sunlight reaction source to prepare a titanium dioxide photocatalyst. The reducing agent is hydrogen peroxide or a solution comprising hydrogen peroxide, or ammonia or a solution comprising ammonia. The sunlight reaction source is sunlight of violet to indigo series having a wavelength of 350 to 480 nm.

Abstract translation: 提供了对阳光反应的二氧化钛光催化材料的制备方法，以通过向光催化剂的表面施加额外的方法来使波长为350至480nm的紫光到靛蓝系列的阳光被用作氧化的反应源 通过常规制备方法制备，从而将带隙从3.0eV减小到更多或更小的2.5至2.6eV。 在通过诸如真空沉积工艺或溅射工艺之类的干法处理的二氧化钛作为主要组分的光催化剂或溶胶 - 凝胶法等湿法制备光催化剂的方法中，二氧化钛光催化材料的制备方法 对阳光反应包括：在还原剂上安装Pt电极作为阳极; 在制备的二氧化钛的表面上安装阴极; 通过电解进行还原反应以增加光催化剂的活性; 并通过阳光反应源氧化光催化剂以制备二氧化钛光催化剂。 还原剂是过氧化氢或包含过氧化氢或氨或氨的溶液的溶液。 阳光反应源是波长为350〜480nm的紫色到靛蓝系列的阳光。