http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Quinacridone을 첨가시킨 SnO<sub>2</sub>가 도핑된 TiO<sub>2</sub> 분말의 광촉매 특성
정미원,곽윤정,Jung, Miewon,Kwak, Yunjung 한국공업화학회 2007 공업화학 Vol.18 No.6
$SnO_2$가 도핑된 $TiO_2$ 분말을 tin (IV) bis(acetylacetonate) dichloride와 titanium diisopropoxide bis(acetylacetonate)를 출발물질로, 유기염료인 quinacridone을 첨가하여 합성하였다. 반응 전후 염료의 구조를 FT-IR로 관찰하였고, 입자의 모양과 형태 및 결정의 구조는 FE-SEM과 XRD 분석기로 알아보았다. 환경오염물질로 유기염료인 indigo carmine을 선택하여 관찰한결과, 아나타제 구조를 갖는 quinacridone이 첨가된 분말을 합성하여, 가시광선 영역에서 광분해 효과를 관찰할 수 있었다. $SnO_2$-doped $TiO_2$ powder was obtained from tin (IV) bis(acetylacetonate) dichloride and titanium diisopropoxide bis(acetylacetonate) with quinacridone as the dye sensitizer molecule. The structural changes of the reaction mixture were monitored by fourier transform infrared (FT-IR) spectroscopy. The morphology and microstructure of gel powder were studied by field-emission scanning electron microscopy (FE-SEM) and X-ray diffractometry (XRD). The photocatalytic activity of these powders with the anatase structure was investigated by using indigo carmine solution as a test dye
고분자 첨가법에 의해 SnO<sub>2</sub>가 도핑된 TiO<sub>2</sub> 분말의 합성 및 광촉매 특성
정미원,곽윤정,Jung, Miewon,Kwak, Yunjung 한국공업화학회 2006 공업화학 Vol.17 No.5
$SnO_{2}$-doped anatase type $TiO_{2}$ powder was prepared by the polymerization complex route from tin(IV) bis (acetylacetonate) dichloride, titanium diisopropoxide bis (acetylacetonate) and polyethylene glycol (PEG) as a complexing agent. The structural changes of reaction mixture were monitored by fourier transform infarared (FT-IR) spectroscopy. The microstructure and morphology of gel powder were studied by field-emission scanning electron microscopy (FE-SEM) and X-ray diffractometry (XRD). The photocatalytic activity of these powders with the anatase structure was investigated by using indigo carmine solution. $SnO_{2}$가 도핑된 아나타제형의 $TiO_{2}$ 분말을 tin (IV) bis (acetylacetonate) dichloride와 titanium diisopropoxide bis (acetyl- acetonate)를 출발물질로, polyethylene glycol (PEG)을 첨가하여 합성하였다. 반응과정에 대한 구조변화를 FT-IR로 추적하였고, 입자의 모양과 형태 및 결정의 구조는 FE-SEM과 XRD 분석기로 관찰하였다. 합성된 분말의 광촉매 효과는 환경오염물질로 indigo carmine (IC)을 선택하여 UV-visible 스펙트라로 관찰하였다.
졸-겔법으로 합성한 TiO<sub>2</sub>-SiO<sub>2</sub> 분말의 분광학적 분석
정미원,염수진,이복임,Jung, Miewon,Yeum, Sujin,Lee, Bockim 한국분석과학회 2005 분석과학 Vol.18 No.1
반응 속도를 조절하기 위하여 유기 첨가제인 아세트산을 사용해 치환된 티타늄 이소프로폭사이드를 합성한 뒤 가수분해 시킨 실리콘(IV)에톡사이드와 반응시켜 $TiO_2-SiO_2$ 분말을 얻었다. 반응 과정 동안의 구조 변화와 특징을 NMR과 FT-IR을 통해서 살펴보았다. 열처리 과정을 거친 분말의 FT-IR 결과로부터 상 분리를 관찰하였다. The stable $Ti(OPr^i)_2(OAc)_2$ sol which reacts with a solution of prehydrolysed $Si(OEt)_4$ was made by addition of acetic acid. The structure evolution of the reaction mixture was monitered by $^1H$, $^{29}Si$ NMR and FT-IR spectroscopy.
폴리카보실란계 바인더를 이용한 다공성 SiC 세라믹스의 제조
박지혜,김영희,정미원,Park, Jihye,Kim, Younghee,Jung, Miewon 한국세라믹학회 2012 한국세라믹학회지 Vol.49 No.5
Porous SiC ceramics were prepared by using recycled SiC sludge, which is an industrial waste generated from solar cell industry. Polycarbosilane derivatives, such as polycarbosilane (PCS), polyphenylcarbosilane (PPCS) and hydridopolycarbosilane (HPCS) were used as binding agents for the fabrication of porous SiC ceramics at $1800^{\circ}C$ under Ar atmosphere. The effects of the various binding agents having different C/Si ratios were discussed on the sintering and porosity of the SiC ceramics. The prepared porous SiC ceramics were characterized by X-ray Diffraction (XRD) and Field-Emission Scanning Electron Microscope (FE-SEM). Thermal conductivity and porosity of SiC ceramics were measured at room temperature, and they were 56.7W/mK and 29.8%, respectively.