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Exfoliation of Non-vdW Materials Using Soft Chemical Processing Methods
Exfoliation of Non-vdW Materials Using Soft Chemical Processing Methods
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104723
- ISBN
- 9798297601000
- DDC
- 540
- 저자명
- Yang, Mulan.
- 서명/저자
- Exfoliation of Non-vdW Materials Using Soft Chemical Processing Methods
- 발행사항
- [Sl] : Princeton University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 115 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-04, Section: B.
- 주기사항
- Advisor: Schoop, Leslie M.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2025.
- 초록/해제
- 요약Chemical processing methods have often been used to exfoliate van der Waals (vdW) materials, but they are difficult to extend to non-vdW materials because of the stronger bonds that need to be overcome. However, methods like chemical exfoliation are also necessary to achieve nanoscale non-vdW materials because mechanical exfoliation does not generally work in these cases. A promising class of non-vdW materials are the alkaliintercalated layered materials, which lend themselves well to chemical exfoliation because of their anisotropic structure. In this work, we use soft chemical methods to deintercalate and exfoliate alkali-intercalated transition metal dichalcogenides and alkali-intercalated transition metal oxides. First, we synthesize 1-dimensional (1D) nanoribbons from KFeS2 , demonstrating that non-vdW materials can be exfoliated to 1D and retain magnetic properties. Second, we exfoliate 2-dimensional nanosheets of Cr2O3 from NaCrO2, using NaCrO2 as a case study to better understand the effects of chemical processing methods on alkali-intercalated transition metal oxides, which have not been researched as thoroughly as their chalcogenide counterparts. We show that three common methods of chemical processing - proton exchange, solvent reaction, and oxidative extraction - result in treated NaCrO2 compounds that are distinct from each other structurally and/or magnetically. Because Cr2O3 is a non-layered material, we also optimize the exfoliation to Cr2O3 and discuss how to minimize the height of the resulting nanosheets. This dissertation expands the applications of chemical exfoliation on non-vdW compounds and sheds light on the mechanism of exfoliation of these materials.
- 일반주제명
- Chemistry
- 일반주제명
- Inorganic chemistry
- 일반주제명
- Materials science
- 키워드
- Nanoribbons
- 키워드
- Nanosheets
- 기타저자
- Princeton University Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798297601000
■035 ▼a(MiAaPQ)AAI32121765
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aYang, Mulan.▼0(orcid)0000-0002-0122-3818
■24510▼aExfoliation of Non-vdW Materials Using Soft Chemical Processing Methods
■260 ▼a[Sl]▼bPrinceton University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a115 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-04, Section: B.
■500 ▼aAdvisor: Schoop, Leslie M.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2025.
■520 ▼aChemical processing methods have often been used to exfoliate van der Waals (vdW) materials, but they are difficult to extend to non-vdW materials because of the stronger bonds that need to be overcome. However, methods like chemical exfoliation are also necessary to achieve nanoscale non-vdW materials because mechanical exfoliation does not generally work in these cases. A promising class of non-vdW materials are the alkaliintercalated layered materials, which lend themselves well to chemical exfoliation because of their anisotropic structure. In this work, we use soft chemical methods to deintercalate and exfoliate alkali-intercalated transition metal dichalcogenides and alkali-intercalated transition metal oxides. First, we synthesize 1-dimensional (1D) nanoribbons from KFeS2 , demonstrating that non-vdW materials can be exfoliated to 1D and retain magnetic properties. Second, we exfoliate 2-dimensional nanosheets of Cr2O3 from NaCrO2, using NaCrO2 as a case study to better understand the effects of chemical processing methods on alkali-intercalated transition metal oxides, which have not been researched as thoroughly as their chalcogenide counterparts. We show that three common methods of chemical processing - proton exchange, solvent reaction, and oxidative extraction - result in treated NaCrO2 compounds that are distinct from each other structurally and/or magnetically. Because Cr2O3 is a non-layered material, we also optimize the exfoliation to Cr2O3 and discuss how to minimize the height of the resulting nanosheets. This dissertation expands the applications of chemical exfoliation on non-vdW compounds and sheds light on the mechanism of exfoliation of these materials.
■590 ▼aSchool code: 0181.
■650 4▼aChemistry
■650 4▼aInorganic chemistry
■650 4▼aMaterials science
■653 ▼aChemical exfoliation
■653 ▼aNanoribbons
■653 ▼aNanosheets
■653 ▼aTransition metal dichalcogenides
■653 ▼aTransition metal oxides
■690 ▼a0485
■690 ▼a0794
■690 ▼a0488
■71020▼aPrinceton University▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-04B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358589▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
