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TiOCl<sub>2</sub> 를 이용한 TiO<sub>2</sub> 초미분체의 제조
임한슬,윤소영,김새롬,최윤정,이창용 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
최근 나노 크기의 다양한 재료들이 안료, 태양전지, 반도체와 같은 다양한 분야에서 많은 연구의 대상이 되고 있다. 또한 우수한 기계적, 전기적, 광학적, 자기적 특성을 지닌 나노 복합체는 새로운 소재로 주목받고 있다. TiO<sub>2</sub>는 자기정화 기능, 우수한 산화력, 고효율 수소 생산성 및 태양 전지로 활용성 등을 포함하여 다양한 분야의 친환경 소재로 각광을 받고 있다. 특히 나노 TiO<sub>2</sub>는 투명도, 내열성, 유전율, 굴절률이 높고 화학적 및 생화학적 안정성이 높아 다양한 용도로 활용하기 위한 연구가 활발히 진행되고 있다. 이러한 나노 크기의 TiO<sub>2</sub>는 제조 방법에 따라 입자, 와이어, 튜브, 다공성 및 에어로젤과 같은 다양한 형태를 가지는 입자들로 제조될 수 있다. TiO<sub>2</sub>는 크기 및 결정에 따라서도 특성이 달라 응용 분야마다 제조 방법이 다양하다. TiO<sub>2</sub>를 제조하는 방법에는 수열합성법이나 졸-겔법 등과 같은 습식화학 제조 방법이 가장 일반적이다. 본 실험에서는 나노 크기의 TiO<sub>2</sub>를 제조하기 위하여 TiCl<sub>4</sub>로부터 TiOCl<sub>2</sub> 수용액(titanium oxychloride - hydrochloric acid solution)을 제조하였다. 제조한 TiOCl<sub>2</sub> 수용액을 이용하여 최종적으로 TiO<sub>2</sub> 초미분체를 제조하고 물리화학적 특성분석을 하였다.
Simultaneous analysis of tar in gasification by using GC/MS
임한슬,이창용,최현정 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
In recent years, the quantity of municipal solid waste(MSW) has increased significantly in the worldwide raising the question of its sustainable disposal management. Most of the MSW has been disposed by incineration and landfill, which causes many problems in the aspects of environment. To solve theses problems, many researches and developments on renewable energy are in progress. Especially, the Gasification process has emerged as a new alternative for waste treatment process of existing systems. In order to use synthesis gas produced for process of MSW as gas engines, turbines or chemical material transferring processes, it is necessary to refine pollutants(tar, char, etc.) in the synthesis gas produced from the gasification of MSW. Consequently, tar as a pollutants can cause operational problems in downstream processes by blocking gas coolers, turbine and engine suction channels. In this work, we study GC/MS analysis of tar produced from MSW gasification.
체험형 전시연출기법을 활용한 박물관의 신(新)한류 콘텐츠 개발 사례연구 -국립민속박물관 ‘한국문화상자’ 중심으로
임한슬 한국박물관학회 2020 博物館學報 Vol.- No.38
Owing to the ripple effects of K-pop, likability toward Korean culture (i.e., traditional Korean costume and Korean food) is increasing. Hallyu is undergoing major transformations including the advent of regular subscription service to Korean culture for those who want to experience it. Now is the time to look into new Hallyu from museum level, which is a leading cultural institute in the new Korean wave. This study aimed to examine the development process and examples of using new Hallyu contents through the Korean Culture Box of the National Folk Museum of Korea by using experience-based exhibition technique. The Korean Culture Box - a new Korean wave contents developed by applying adjustable, interactive, participation-based, demonstration-based, and play-based experience-based exhibition technique - has created new Korean wave culture after being used at major events such as local community events and the Asian Games. Also, it was used in ‘Understanding Korean Culture’ course of the King Sejong Institute of the Korean Cultural Center overseas, which is the base of Hallyu. Therefore, the Korean Culture Box - new Korean wave contents introducing Korean culture abroad - is planning to maximize its availability by applying experience-based exhibition technique and providing services in other languages. K-POP 파급효과로 한복, 한식 등 한국문화 호감도가 상승하고 있다. 직접적인 한국문화체험을 원하는 사람을 위한 한국문화 정기구독서비스가 생겨나는 등 이전과는 다른 한류의 모습을 보이고 있다. 이러한 흐름 속 대표적인 문화기관인 박물관차원에서의 신한류에 대한 고찰이 필요한 시점이다. 본 연구에서는 체험형 전시연출기법을 활용한 국립민속박물관의 한국문화상자 사례를 통해 신한류콘텐츠 개발과정 및 활용사례를 고찰해보고자 한다. 한국문화상자는 조작식, 인터렉티브, 참여형, 시연형, 놀이형의 체험전시 연출방법을 적용하여, 신한류콘텐츠로 해당 국가의 주요 행사 및 교육에서 활용되었다. 따라서 한국문화상자는 신한류콘텐츠로 지속가능한 한류문화를 창출하고 있다.
Synthesis and characterization of TiO2-doped SiO2 Hollow spheres
임한슬,윤소영,이윤아,이창용 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Nano-sized titania is the most effective photocatalyst and has been widely applied in purification of water and air. Nano-size materials have attracted much attention because of interesting physical properties caused by their unusual sizes and shapes. To this end, a great deal of effort has been devoted to the synthesis of TiO2 nanotubes, nanorods, or nanowires. Of them, the hollow sphere structures certainly provide advantageous features, such as a high surface area, delivering ability, surface permeability and a low density. Hollow spheres have extensive applications in the fields of biology, catalysis, electronics, optics, photonic materials, medical analysis, coating, and so on. Inorganic (SiO2 beads, glass bubble) and organic (polystyrene (PS), poly methyl methacylate (PMMA) and copolymer beads) materials can be used as cores. In this study, TiO2-doped SiO2 hollow spheres were obtained by coating the SiO2 hollow sphere particles with appropriate amount of titanic chloride solution. The obtained nanoparticles were characterized using XRD, SEM, XPS and probe reaction.
Recycling of waste positive electrolyte solution in vanadium redox flow battery
윤소영,임한슬,이창용 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Developing reliable energy storage system is pivotal to meet the world’s growing energy demands. Among the promising technologies for the large-scale ESS, the VRFB uses vanadium reactants on both the anode and cathode half-cells, and consequently, cross-contamination of ions causes no harm on battery capacity, prolongs their cycle life and operates at high energy efficiencies. However, the development of the VRFB has been inhibited by low energy density and narrow operation temperature window (10 to 30oC), which are mainly limited by the solubility of various vanadium cations in the electrolyte system. In particular, the V+5 species indicate poor stability at elevated temperatures. This thermal and chemical instability is observed as V2O5 particles precipitation, which results in energy loss and failure of the battery. In this work, we studied recycling of waste positive electrolyte in VRFB by a reducing agent. The positive electrolyte in VRFB is characterized using UV/Vis spectrophotometry, Raman spectrophotometry, and electron spin resonance (ESR).