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Metal-Based Clusters Encapsulated in Metal-Organic Framework for Catalysis and Chemical Separations
Metal-Based Clusters Encapsulated in Metal-Organic Framework for Catalysis and Chemical Separations
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104659
- ISBN
- 9798291583661
- DDC
- 540
- 저자명
- Sui, Jingyi.
- 서명/저자
- Metal-Based Clusters Encapsulated in Metal-Organic Framework for Catalysis and Chemical Separations
- 발행사항
- [Sl] : Northwestern University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 106 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Hupp, Joseph.
- 학위논문주기
- Thesis (Ph.D.)--Northwestern University, 2025.
- 초록/해제
- 요약Metal-organic frameworks (MOFs) are a class of highly porous and crystalline materials, composed of inorganic nodes connected and multitopic organic linkers. Their high tunability, and large internal surface areas make them promising candidates for a wide range of applications in catalysis, chemical separation, and so on. One powerful strategy to enhance the functionalities of MOFs is post-synthetic metalation, which incorporates metal ions or clusters into the framework without compromising the overall structure. This dissertation explores two strategies to incorporate metal species into MOFs, using the resulting composite as precursors for synthesis ultra-small metal phosphide or sulfide that are otherwise difficult to prepare. In the first approach, we leveraged the labile -OH/H2O on the nodes of Zr-MOFs, depositing nickel oxide clusters that were subsequently converted into nickel phosphide. Results showed that the resulting materials retained crystallinity while having highly dispersed nickel phosphide. Even though the nickel species existed as a mixture of nickel oxide and phosphide, the phosphide component remained active for photocatalytic hydrogen evolution in the presence of photosensitizers and sacrificial electron donors. In the second approach, we functionalized a Zr-MOF with a well-defined metal oxide cluster, polyoxometalate (POM). By judiciously selecting MOFs and POMs, POMs can be immobilized inside the framework via impregnation. The resulting composite had the POMs effectively sculpting the pore volume of the parent MOF. The pore-sculpted POM MOF exhibited enhanced Xe/Kr separation performance, with significant increased Xe and Kr uptake capacities and improved Xe selectivity compared to the parent MOF. Subsequent sulfidation converted the encapsulated POM into a fully sulfided analogue, polythiometalate (PTM). The PTM MOF composite demonstrated rapid and selective Ag+ capture.
- 일반주제명
- Chemistry
- 일반주제명
- Inorganic chemistry
- 일반주제명
- Organic chemistry
- 키워드
- Sulfidation
- 키워드
- Polythiometalate
- 기타저자
- Northwestern University Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798291583661
■035 ▼a(MiAaPQ)AAI32116054
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aSui, Jingyi.
■24510▼aMetal-Based Clusters Encapsulated in Metal-Organic Framework for Catalysis and Chemical Separations
■260 ▼a[Sl]▼bNorthwestern University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a106 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Hupp, Joseph.
■5021 ▼aThesis (Ph.D.)--Northwestern University, 2025.
■520 ▼aMetal-organic frameworks (MOFs) are a class of highly porous and crystalline materials, composed of inorganic nodes connected and multitopic organic linkers. Their high tunability, and large internal surface areas make them promising candidates for a wide range of applications in catalysis, chemical separation, and so on. One powerful strategy to enhance the functionalities of MOFs is post-synthetic metalation, which incorporates metal ions or clusters into the framework without compromising the overall structure. This dissertation explores two strategies to incorporate metal species into MOFs, using the resulting composite as precursors for synthesis ultra-small metal phosphide or sulfide that are otherwise difficult to prepare. In the first approach, we leveraged the labile -OH/H2O on the nodes of Zr-MOFs, depositing nickel oxide clusters that were subsequently converted into nickel phosphide. Results showed that the resulting materials retained crystallinity while having highly dispersed nickel phosphide. Even though the nickel species existed as a mixture of nickel oxide and phosphide, the phosphide component remained active for photocatalytic hydrogen evolution in the presence of photosensitizers and sacrificial electron donors. In the second approach, we functionalized a Zr-MOF with a well-defined metal oxide cluster, polyoxometalate (POM). By judiciously selecting MOFs and POMs, POMs can be immobilized inside the framework via impregnation. The resulting composite had the POMs effectively sculpting the pore volume of the parent MOF. The pore-sculpted POM MOF exhibited enhanced Xe/Kr separation performance, with significant increased Xe and Kr uptake capacities and improved Xe selectivity compared to the parent MOF. Subsequent sulfidation converted the encapsulated POM into a fully sulfided analogue, polythiometalate (PTM). The PTM MOF composite demonstrated rapid and selective Ag+ capture.
■590 ▼aSchool code: 0163.
■650 4▼aChemistry
■650 4▼aInorganic chemistry
■650 4▼aOrganic chemistry
■653 ▼aMetal-organic frameworks
■653 ▼aSulfidation
■653 ▼aPolythiometalate
■690 ▼a0485
■690 ▼a0488
■690 ▼a0490
■71020▼aNorthwestern University▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0163
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358419▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
