Abstract:
PURPOSE: A manufacturing method of metal oxide nano-plate on a non-polar organic solvent-ice interface and a metal oxide nano-plate manufactured by using thereof are provided to shorten manufacturing time and reduce manufacturing cost. CONSTITUTION: A manufacturing method of metal oxide nano-plate on a non-polar organic solvent-ice interface comprises the following steps: forming metal oxide nano-plate on surface of ice by processing sol-gel reaction in a mixture of precursor of the metal oxide and ice; removing ice and water from the mixture solution in which the metal oxide nano-plate is formed; and collecting the metal oxide nano-plate. A manufacturing method of the metal oxide nano-plate comprises the following steps: adding ice in the mixture solution of the non-polar organic solvent and titanium dioxide precursor; and forming the metal oxide nano-plate by the sol-gel reaction in interface between ice and the non-polar organic solvent.
Abstract:
본 발명은 유기염료 감응 이산화티타늄을 사용하여 가시 광선 하에서도 오염물질의 분해 효율이 높으며, 넓은 pH 범위에서도 안정성을 유지하여 높은 광촉매 활성을 나타내는 유기염료/이산화티타늄의 광촉매, 이의 제조방법 및 이를 이용한 폐수 처리방법에 관한 것이다. [화학식 1]
Abstract:
PURPOSE: A method for coating a titania thin film on the surface of a metal is provided to rapidly coat the titania thin film on the surface of the metal while preventing faults such as crack and a pin hole from being generated on the surface of the metal. CONSTITUTION: A method for coating a titania thin film on the surface of a metal comprises the following steps: washing a metal surface; and forming the titania thin film on the metal surface through a plasma-enhanced atomic layer deposition. The titania thin film has TDMAT(Trakisdimethylamidotitanium) as a precursor. The titania thin film is deposited using oxygen of plasma state as a reactive group. The deposition method comprises: a step injecting the TDMAT on a heated metal surface; a purging step for eliminating remaining precursor; injecting oxygen of plasma state to react with the TDMAT; and the purging step for removing remaining gas and by-products.
Abstract:
본발명은금속시드층; 및금속시드층상에형성되고일방향으로정렬된나노와이어;를포함하는광전극에관한것이다. 본발명의광전극은일방향으로정렬된나노와이어를포함함으로써계면저항이거의없고안정성이우수하며, 빛의반사및 굴절률이증가하여빛의흡수율이향상될수 있다. 또한, 수열합성시간에따라일방향으로정렬된나노와이어의두께및 길이를조절하여광전극의광전류및 빛흡수율을최적화할수 있는광전극의제조방법을제공할수 있다. 또한, 이와같은광전극을적용하여우수한효율로수소를생산할수 있는수소의제조방법을제공할수 있다.
Abstract:
6가 크롬의 환원 방법에 관한 것으로, 6가 크롬을 포함하는 용액을 준비하는 단계; 상기 용액에 유기산을 투입하는 단계; 및 상기 유기산이 투입된 용액을 냉각하는 단계를 포함하는 6가 크롬의 환원 방법을 이용하여, 간단한 공정으로 독성이 강한 6가 크롬을 독성이 덜한 3가 크롬으로 환원시킬 수 있다.
Abstract:
PURPOSE: A method for preparing a photocatalyst is provided to simply and cheaply obtain the photocatalyst with excellent photo-conversion efficiency. CONSTITUTION: A method for preparing a photocatalyst comprises a step of treating a graphite solution by electrochemical oxidation and ultrasonic wave and preparing a graphite oxide colloid solution; a step of adding TiO_2 powder to the graphite oxide colloid solution at pH 2-5 and mixing; and a step of drying the mixture. The oxidation voltage and ultrasonic wave frequency are 28-35 V and 95-105 kHz.
Abstract:
PURPOSE: A photo conversion material and a manufacturing method thereof are provided to offer a semiconductor composite which includes ternary system hybrid material of CdS-TiO2-WO3. CONSTITUTION: A semiconductor composite comprises ternary system hybrid material of CdS-TiO2-WO3. An atomic ratio of Cd, Ti, and W of the semiconductor composite is 4 : 1 : 1 to 0.25 : 1 : 1. An optical band gap of the semiconductor composite is from 2.3eV to 2.5eV. The semiconductor composite has an absorption edge of 490nm to 550nm. The semiconductor composite is a crystalline structure.
Abstract:
본 발명은 광감응성 전극 및 이의 제조방법에 관한 것으로, 보다 상세하게는 종래의 고온 열처리(450 내지 500 ℃) 과정을 거치지 않고, 저온 코팅 공정(100 ℃ 이하)만 수행하여도 우수한 전자전달 효율을 얻을 수 있어, 태양전지 또는 광감응성 센서의 전극으로 매우 유용한 광감응성 전극 및 이의 제조방법을 제공할 수 있다. 저온 코팅 공정, 광감응성 전극, 태양전지