DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 김일두 | - |
dc.contributor.author | Woo, Sungyoon | - |
dc.contributor.author | 우성윤 | - |
dc.date.accessioned | 2024-07-30T19:31:16Z | - |
dc.date.available | 2024-07-30T19:31:16Z | - |
dc.date.issued | 2024 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1096755&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/321537 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 신소재공학과, 2024.2,[iv, 44 p. :] | - |
dc.description.abstract | Single-crystal stucture made of catalytic metals and oxides play a key role in understanding how catalyst surfaces interact with reactants. However, a full understanding of the crystallographic reasons for these enhancements was lacking. This study fills that gap by providing evidence of the structure-property relationship using single-crystal $TiO_2$ as a model. We use a powerful method involving transient pulse heating to control porosity and phase in single-crystal $TiO_2$ nanosheets along the (001) plane. This controlled transition and pore creation happen without compromising the structure. Introducing high-entropy alloy nanoparticles shows excellent catalytic activity in CO oxidation, achieving $T_50$ and $T_90$ at $117^\circ C$ and $143^\circ C$. This better performance comes from the interaction between catalytic nanoparticles and the support, aiding CO and $O_2$ adsorption for oxidation. In summary, our study helps us understand catalyst systems better, and our method could be useful for making practical advanced nanocatalysts using single crystals. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 고 엔트로피 합금▼a줄 히팅▼a단결정▼aCO 산화반응▼a이종 구조체 | - |
dc.subject | High-entropy alloy▼aJoule heating▼aSingle crystal▼aCO oxidation▼aHeterogeneous catalyst | - |
dc.title | Unveiling catalytic properties of high-entropy alloys on square pores of multiphase $TiO_2$ | - |
dc.title.alternative | 다상 $TiO_2$의 정사각형 기공에서 고엔트로피 합금의 촉매 특성 향상에 대한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :신소재공학과, | - |
dc.contributor.alternativeauthor | Kim, Il-Doo | - |
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