DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Park, Seung-Bin | - |
dc.contributor.advisor | 박승빈 | - |
dc.contributor.author | Jeong, Eun-Soo | - |
dc.contributor.author | 정은수 | - |
dc.date.accessioned | 2015-04-23T02:09:31Z | - |
dc.date.available | 2015-04-23T02:09:31Z | - |
dc.date.issued | 2014 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=592342&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/196288 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2014.8, [ vii, 65 p. ] | - |
dc.description.abstract | Alternative energy and environmental pollution problems are serious global issues and one of the solution is the photocatalyst. Conventional photocatalytsts such as $TiO_2, SrTiO_3, BaTiO_3, ZnO$ and ZnS are only able to have activity under UV light which occupies the very small portion in the sun light. Therefore, to broaden the active region of photocatalyst and use widely, the photocatalyst activated under visible light is needed to develop. In this work, the Bismuth-containing phtocatalysts are the attractive materials to satisfy the requirements due to the effect of $Bi^{3+}$ ion. Spray pyrolysis which has some advantages such as high purity of product, uniformity of particle size and shape, convenience to make multicomponent product and etc. was used to synthesize the materials. Additionally, for $BiVO_4$ photocatalyst, PO4 doping and composite with cobalt oxide were conducted to increase the photocatalytic activity. As a result, all Bismuth-containing photocatalysts were well synthesized by spray pyrolysis and showed enhanced activities under visible light irradiation compared with other synthesis methods. Also, 0.5 mol % doped BiVO4 showed 1.17 times increased activity for degradation of methylene blue and 1.2 wt.% $CoO_x/BiVO_4$ composite had 1.43 and 1.29 times improved activity for methylene blue and rhodamine B degradation, respectively. Finally, prepared $Bi_3NbO_7$ was possible not only to degrade organic dyes also to evolve the $H_2$ gas from water splitting. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Photocatalyst | - |
dc.subject | 물 분해 | - |
dc.subject | 유기물 분해 | - |
dc.subject | 가시광선 | - |
dc.subject | 분무 열 분해 법 | - |
dc.subject | 광촉매 | - |
dc.subject | Spray pyrolysis | - |
dc.subject | Visible light | - |
dc.subject | Organic degradation | - |
dc.subject | Water splitting | - |
dc.title | Synthesis of bismuth-containing photocatalyst by spray pyrolysis and their characteristics | - |
dc.title.alternative | 분무 열분해법을 이용한 비스무스를 포함한 광촉매 제조 및 활성 평가 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 592342/325007 | - |
dc.description.department | 한국과학기술원 : 생명화학공학과, | - |
dc.identifier.uid | 020124543 | - |
dc.contributor.localauthor | Park, Seung-Bin | - |
dc.contributor.localauthor | 박승빈 | - |
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