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dc.contributor.advisor김진흥-
dc.contributor.author박유미-
dc.creator박유미-
dc.date.accessioned2017-08-27T11:08:54Z-
dc.date.available2017-08-27T11:08:54Z-
dc.date.issued2017-
dc.identifier.otherOAK-000000137665-
dc.identifier.urihttp://dcollection.ewha.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000137665en_US
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/235958-
dc.description.abstractWith the global environmental demand and dwindling supply of fossil fuels, the chemical transformation of carbon dioxide (CO2) into chemical fuels is of vital importance.1 To solve these two problems, first, we are using hydrogen as a replacement for fossil fuels. Second, we use various catalysts to CO2 reduction to formate. We can solve these two problems by using various Metal-Organic Framework (MOF) as catalysts. In chapter Ⅰ, a generally well-known MOF containing Ni catalyst was attempted to produce hydrogen. Ni is often used as a cheap and effective catalyst, but it has a disadvantage that it is weak to heat and impossible to be reused. To complement it, we used MOF and added MOF and Ni to create a new complex. First, the Ni catalyst was treated on MOF by one-pot systhesis and substitution. Then it was characterized through solid-UV, XRD, TG, IR and so on. Two MOFs with Ni catalyst were used as a catalyst to effectively generate hydrogen in eosin Y as photosensitizer, TEOA as an electron donor and EtOH / H2O conditions. As a result, it can be seen that UIO-67pot-Ni with one-pot synthesis produces hydrogen more effectively than UIO-66sub-Ni with substitutional synthesis. In chapter Ⅱ, a MOF is a lattice structure using a metal-organic ligand, in which the organic ligand is varied to compare the role of the catalyst. Ti-based MOFs were made using three different ligands (terephthalic acid, 2-aminoterephthalic acid, 2,2’-bipyridine-5,5’-dicarboxylic acid). The three MOFs with different ligands were characterized by XRD, TG, IR, and MOF with three different ligands named MOF-Ir (H2BDC), MOF-Ir (DCBA) and MOF-Ir (H2BDC-NH2). The hydrogen production by the three ligands was compared and as a result, MOF-Ir (H2BDC-NH2) produced the highest hydrogen when used as a catalyst. In chapter Ⅲ, as in chapter 1, a Rh is a metal that is easy to reduce CO2. However, it has a disadvantage that it is weak to heat and can not be reused. To compensate it, MOF is used and MOF and Rh are added to form a new complex. we made MOF through two syntheses of Rh. One-pot synthesis method was used for UIO-67pot-Rh, and substitution synthesis was used for UIO-66sub-Rh. MOF with Rh catalyst produced formic acid through CO2 reduction. Through various characterization and experiments, it can be seen that the UIO-66sub-Rh catalyst produces higher formic acid.;지구에 대한 환경적인 요구와 화석 연료의 공급 감소로 인해 이산화탄소 (CO2)가 화학 연료로 화학적으로 변환되는 것이 매우 중요하다 .이 두 가지 문제를 해결하기 위해 먼저 수소를 화석 연료의 대체물로 사용하고 있다. 둘째, 다양한 촉매를 사용하여 포름산 염을 환원시킨다. 촉매로 다양한 금속 - 유기 구조 (MOF)를 사용하여 이 두 가지 문제를 해결할 수 있다. Chapter Ⅰ에서는 일반적으로 잘 알려진 Ni 촉매를 포함하는 MOF (Metal-Organic Framework)가 수소 생산을 시도하였다. Ni은 싸고 효과적인 촉매로 많이 사용한다. 하지만 열에 약하고 재사용이 불가능 하다는 단점이 있다. 그것을 보완하기 위해 MOF를 사용하게 되었고 MOF와 Ni을 붙여 새로운 complex를 만들었다. 첫째, Ni 촉매는 MOF상에서 one-pot 합성방법과 치환합성으로 만들었다. 그런 다음 solid-UV, XRD, TG, IR 등으로 촉매를 분석하였다. Ni 촉매를 갖는 2 개의 MOF는 eosin Y에서 광 증감 제, TEOA를 전자 공여체 및 EtOH / H2O 조건으로 효과적으로 수소를 생성시키는 촉매로서 사용되었다. 결과적으로, one-pot 합성을 이용한 UIO-67pot-Ni는 치환 합성을 통해 만들어진 UIO-66sub-Ni보다 효과적으로 수소를 생성한다. Chapter Ⅱ 장에서 MOF는 metal과 organic ligand를 사용한 격자구조인데 여기서 organic ligand를 여러가지로 바꿔서 촉매역할을 비교해 보았다. Ti 을 기본으로한 MOF는 세 가지 다른 리간드 (terephthalic acid, 2-Aminotere phthalic acid, 2,2’-bipyridine-5,5’-dicarboxylic acid)를 사용하여 제조되었다. MOF-Ir (H2BDC), MOF-Ir (DCBA) 및 MOF-Ir (H2BDC-NH2)로 명명 된 세 가지 다른 리간드를 갖는 MOF를 XRD, TG, IR 로 분석하였다. 3개의 리간드에 의한 수소 생성을 비교 한 결과, MOF-Ir (H2BDC-NH2)는 촉매로 사용될 때 가장 높은 수소를 생성했다. Chapter Ⅲ 장에서는 Chapter Ⅰ에서와 같이 Rh으로 두 가지 합성을 통해 MOF를 만들었다. Rh 은 CO2 reduction에 용이한 metal이다 하지만 열에 약하고 재사용이 불가능하다는 단점이 있다 그것을 보완하기 위해 MOF를 사용하게 되었고 MOF와 Rh을 붙여 새로운 complex를 만들었다. UIO-67pot-Rh는 one-pot 합성방법이 사용되었고 UIO-66sub-Rh는 치환 합성이 사용되었다. Rh 촉매를 포함한 MOF는 CO2 감소를 통해 포름산을 생산했다. 다양한 분석 및 실험을 통해 UIO-66sub-Rh 촉매가 높은 포름산을 생성한다는 것을 알 수 있었다.-
dc.description.tableofcontentsChapter Ⅰ. Efficient Hydrogen Photoproduction by Molecular Nickel Catalysts Incorporated into Metal-Organic Frameworks 16 I. Introduction 1 II. Experimental Section 4 A. Materials and instruments 4 B. Synthesis 5 C. Measurement of Hydrogen Evolution 8 D. Measurement of Formic Acid 8 E. Characterization 9 III. Results and Discussion 16 IV. Conclusion 37 V. References 38 Chapter Ⅱ. Efficient Hydrogen Photoproduction by Pt Nanoparticles@Photoactive Metal-Organic Frameworks 40 I. Introduction 41 II. Experimental Section 45 A. Materials and instruments 45 B. Synthesis 46 C. Measurement of Hydrogen Evolution 48 D. Characterization 49 III. Results and Discussion 54 IV. Conclusion 70 V. References 71 Chapter Ⅲ. Photocatalytic CO2 Reduction to Formic Acid Using a Rhodium Catalyst in a Robust Metal-Organic Frameworks 74 I. Introduction 75 II. Experimental Section 79 A. Materials and instruments 79 B. Synthesis 80 C. Measurement of Hydrogen Evolution 83 D. Measurement of Formic Acid 83 E. Chemical NADH generation 84 F. Characterization 85 III. Results and Discussion 91 IV. Conclusion 107 V. References 108 Chapter Ⅳ. Synthesis of various new Metal-Organic Frameworks 110 I. Experimental Section 111 A. Materials and instruments 111 B. Synthesis 112-
dc.formatapplication/pdf-
dc.format.extent4777092 bytes-
dc.languageeng-
dc.publisher이화여자대학교 대학원-
dc.subject.ddc500-
dc.titleEfficient Photocatalytic Hydrogen Production and CO2 Reduction with Various Metal-Organic Frameworks-
dc.typeMaster's Thesis-
dc.format.pagexvi, 118 p.-
dc.contributor.examiner김관묵-
dc.contributor.examiner황성주-
dc.contributor.examiner김진흥-
dc.identifier.thesisdegreeMaster-
dc.identifier.major대학원 화학·나노과학과-
dc.date.awarded2017. 2-
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