東北大学 · Energy
Shu Yin 교수의 연구실은 광촉매 및 나노소재 개발을 핵심으로 하며, 특히 질소 도핑된 트이티아( TiO₂)를 활용한 자외선 및 가시광선 반응성 광촉매 소재를 중심으로 연구를 진행하고 있습니다. 고에너지 볼 밀링, 수열합성, 수용액-알코올 공정 등을 활용한 다각적 합성 전략을 통해 색상 변화와 촉매 성능을 제어하는 데 성공했으며, NOx 제거 등 대기 오염 제어에 응용 가능한 고성능 소재를 개발하고 있습니다. 또한, NIR 차단 능력을 갖춘 나노 구조물인 CsxWO₃의 합성과 환경 노출에 따른 암 발생 위험 분석 등 다양한 응용 분야로 연구 영역을 확장하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract Nitrogen-doped yellowish rutile titania prepared by high energy ball milling of P-25 titania - 5% HMT (Hexamethylenetetramine, C6H12N4) mixed powders followed by calcination in air at 400 °C possessed two absorption edges around 400 and 540 nm and showed excellent photocatalytic ability for nitrogen monoxide oxidization under irradiation of the visible light of wavelength >510 nm.
Nitrogen-doped yellowish rutile titania was prepared by a mechanochemical method. The samples were prepared by high-energy ball milling of a P-25 titania powder with various amounts of hexamethylenetetramine (HMT) under different milling conditions at around room temperature. The effects of the reaction conditions on the phase composition, particle size, specific surface area, amount of nitrogen-doping, microstructure and photocatalysis of nitrogen monoxide destruction were investigated in detai
Anatase, brookite and rutile type nitrogen-doped titania nanocrystals (TiO2−xNy) which are beige in color were successfully prepared by a ‘Homogeneous Precipitation–Solvothermal Process’ (HPSP) in TiCl3–hexamethylenetetramine (C6H12N4) aqueous and alcohol solutions. The phase composition, crystallinity, microstructure, specific surface area, nitrogen doping amount and photocatalytic activity of titania powders greatly changed depending on pH, temperature and the type of treatment alcohols. The T
The photocatalytic deNOx activities of titania, nitrogen-doped titania, Fe-loaded nitrogen-doped titania, and Pt-loaded nitrogen-doped titania under irradiation from monochrome LED lamps using various light wavelengths were investigated in detail. The improvement of visible light induced photocatalytic activity was successfully realized using Fe and Pt loading. Both Fe-loaded nitrogen-doped titania and Pt-loaded nitrogen-doped titania showed excellent visible light response ability. The photocat
Nanosize homogenous rod-like tungsten bronze CsxWO3 with excellent NIR shielding ability was successfully synthesized by a novel and facile water controlled-release solvothermal process (WCRSP).
An expanded cohort study of 74,828 benzene-exposed and 35,805 unexposed workers were followed during 1972 to 1987, based on a previous study in 12 cities in China. A small increase was observed in total cancer mortality among benzene-exposed compared with unexposed workers (relative risk [RR] = 1.2). Statistically significant excesses were noted for leukemia (RR = 2.3), malignant lymphoma (RR = 4.5), and lung cancer (RR = 1.4). When risks were evaluated by leukemia subtype, only acute myelogenou
