DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Park, Seung-Bin | - |
dc.contributor.advisor | 박승빈 | - |
dc.contributor.author | Kim, Eun-Jung | - |
dc.contributor.author | 김은정 | - |
dc.date.accessioned | 2011-12-13T01:54:45Z | - |
dc.date.available | 2011-12-13T01:54:45Z | - |
dc.date.issued | 2006 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=255457&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/29882 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2006.2, [ ⅵ, 79 p. ] | - |
dc.description.abstract | The photocatalytic production of hydrogen from water using solar energy is potentially a clean and renewable source for hydrogen fuel. In this thesis, $NaTaO_3$ was prepared by spray pyrolysis without post-treatment for water splitting in pure water under UV light irradiation. Precursor solution was prepared from $NaTaO_3$ and $Ta(OC_2H_5)_5$ as precursors in nitric acid solution and spray pyrolyzed at various temperatures. XRD, SEM, $N_2$ adsorption/desorption method and UV-vis spectroscopy were used to characterize the prepared photocatalysts. NiO was loaded on $NaTaO_3$ synthesized by conventional solid-state reaction and spray pyrolysis to enhance charge separation, resulting in the enhancement photocatalytic activity for water splitting into $H_2$ and $O_2$ in a stoichiometric ratio. When NiO was loaded on $NaTaO_3$ prepared by spray pyrolysis, high photocatalytic activity for water splitting was obtained. It was because of highly dispersion of NiO particles on surface of $NaTaO_3$ observed from TEM caused by high surface area of the $NaTaO_3$ prepared. The quantum yield of $NiO(0.05wt%)/NaTaO_3$ prepared by spray pyrolysis was 3.1% by chemical actinometry using potassium ferrioxalate. Also, the activity of photocatalyst evaluated by practical term was 59.2μmol/gㆍLㆍhㆍW. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | spray pyrolysis | - |
dc.subject | water splitting | - |
dc.subject | Photocatalyst | - |
dc.subject | hydrogen | - |
dc.subject | 수소 | - |
dc.subject | 분무열분해법 | - |
dc.subject | 물분해 | - |
dc.subject | 광촉매 | - |
dc.subject | spray pyrolysis | - |
dc.subject | water splitting | - |
dc.subject | Photocatalyst | - |
dc.subject | hydrogen | - |
dc.subject | 수소 | - |
dc.subject | 분무열분해법 | - |
dc.subject | 물분해 | - |
dc.subject | 광촉매 | - |
dc.title | Synthesis of $NaTaO_3$ by spray pyrolysis and evaluation of photocatalytic activity for hydrogen production by water splitting | - |
dc.title.alternative | 분무열분해법에 의한 $NaTaO_3$ 제조 및 물분해 수소제조 광활성 평가 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 255457/325007 | - |
dc.description.department | 한국과학기술원 : 생명화학공학과, | - |
dc.identifier.uid | 020043119 | - |
dc.contributor.localauthor | Park, Seung-Bin | - |
dc.contributor.localauthor | 박승빈 | - |
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