Abstract:
A metal hydroxide containing complex fiber, a metal oxide nanofiber and a manufacturing method thereof are provided to have the ultra-fine holes, thereby capable of using as various uses. A precursor containing metal ions is mixed with the high polymer resin solution so that the mixture solution containing metal hydroxide is prepared. The mixture solution is spun electrically so that the complex fiber containing the metal hydroxide and the high polymer resin is manufactured. The metal hydroxide is transformed into the metal oxide and then the high polymer fiber is sintered in order to remove the high polymer resin. The precursor containing metal ions is a metal salt or an organic metal compound including at least one metal selected from a group consisting of indium, tin, copper and zinc and the like. The precursor of 0.01 to 2 mol is mixed with the high polymer resin of 1 mol. The electric spun is performed by voltage of 5 to 10kV. Further, a plasticizing temperature of the complex fiber is 400-800°C.
Abstract:
PURPOSE: A manufacturing method of an indium tin oxide rod is provided to manufacture an indium tin oxide rod with controlled aspect ratio of length and thickness. CONSTITUTION: A manufacturing method an indium tin oxide rod comprises a step of forming a first mixture by mixing indium precursor, tin precursor, and terephthalte; a step of mixing alcohol into the first mixture, to obtain a second mixture into dimethyl formamide; a step of obtaining precipitation by refluxing the second mixture; a step of washing and drying the precipitation; and a step of heat treating the precipitation. The weight mixing ratio of the alcohol and the dimethyl formamide is 0.1-0.5. The aspect ratio of the indium tin oxide rod is 4-30. The weight mixing ratio of the indium precursor and the tin precursor is 1-5. The weight mixing ratio of the terephthalte and the indium precursor is 0.5-0.8. The reflux reaction is conducted at 80-140 deg. C, and the heat treatment is conducted at 400-800 deg. C.
Abstract:
(a) 강알칼리 수용액 내에서 이산화티탄을 반응시켜 티타네이트 나노튜브를 얻는 단계; (b) 상기 티타네이트 나노튜브와 강산 수용액을 반응시켜 아나타제 결정상을 갖는 이산화티탄 함유 티타네이트 나노튜브를 얻는 단계; 및 (c) 상기 아나타제 결정상을 갖는 이산화티탄 함유 티타네이트 나노튜브를 금속 전구체를 포함하는 수용액에 분산시킨 후 자외선을 일정 시간동안 조사하여 결과물을 얻는 단계를 포함하는 금속입자가 담지된 티타네이트 나노튜브의 제조방법이 제공된다.
Abstract:
A method for preparing metal oxide nanopowder is provided to obtain metal oxide nanopowder easily controllable in particle characteristics including particle size and particle size distribution through a simple process at a high yield. A method for preparing metal oxide nanopowder comprises the steps of: mixing and agitating a thermoplastic polymer resin solution with a compound containing at least one kind of metal ion; and heat-treating the mixed solution to obtain nanosized metal oxide powder. The heat treating step is carried out at a 350-800 deg.C. The thermoplastic polymer resin solution comprises 5-30 wt% of a thermoplastic polymer resin. Further, the solvent is selected from a group consisting of water, methanol, ethanol and isopropylalcohol.