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Preparation of Metal-Complexed Carbon Membrane Using Monodispersed Silica Nanoparticles and Application for removal of gases

  • 저자

    김운중

  • 학위수여기관

    한남대학교 대학원

  • 학위구분

    국내박사

  • 학과

    화학과 물리 및 분석화학

  • 지도교수

    이승호

  • 발행년도

    2014

  • 총페이지

    xiv, 198 p.

  • 키워드

    VOCs TiO2 photocatalyst Adsorption type Silica nanoparticle Porous carbon membrane Complex;

  • 언어

    kor

  • 원문 URL

    http://www.riss.kr/link?id=T13539087&outLink=K  

  • 초록

    Recently pollution of air by various types of materials such as fine dust, volatile organic compound (VOC), and hydrofluoric acid has become serious. Among them, VOC is of particular concern, which is emitted from automobiles and from consumption of oil or organic solvents is growing. Aromatic compounds (eg., benzene), as members of VOC, are carcinogens doing serious harm to human's immune system, and must be removed before they are discharged. Removal of VOC can be achieved using catalysts such as transition metal oxide catalysts, TiO2 photocatalyst, or composite catalyst of a mixture of TiO2 and activated carbon. VOC removal with catalytic treatment may produce by-products that could become secondary sources of pollution, and thus air filter of adsorption type is drawing interest. In this study, a porous carbon membrane based on silica nanoparticle was prepared. Various synthesis parameters were systematically investigated to study the effects on the size and the size distribution of silica nanoparticles. The silica nanoparticles were pressurized into a disk, and then calcinated to obtain porous carbon membrane. Then the membrane was chemically treated with COOH group, and Ag was complexed on the surface of the membrane. The Ag-complexed carbon membrane showed gas-removal capacity of 5.90 x 10-3 mg butane/g which is about four times higher than that of TiO2 catalyst (1.55 x 10-3 mg butane/g). Results suggest the metal-complexed carbon membrane developed in this study has a high potential for application to removal of gases including VOCs. As it is based on adsorption, the process is harmless. Also anti-microbial and fine dust removal function were added.


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