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Understanding Changes to the Surface of Silver Nanocubes During Their Polyol Synthesis, Processing, and Seeded Growth
Understanding Changes to the Surface of Silver Nanocubes During Their Polyol Synthesis, Processing, and Seeded Growth
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105505
- ISBN
- 9798263326166
- DDC
- 600
- 저자명
- Huang, Qijia.
- 서명/저자
- Understanding Changes to the Surface of Silver Nanocubes During Their Polyol Synthesis, Processing, and Seeded Growth
- 발행사항
- [Sl] : Georgia Institute of Technology, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 138 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Xia, Younan.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2025.
- 초록/해제
- 요약Silver nanocubes have been extensively studied owing to their remarkable plasmonic and catalytic properties. Despite the success in synthesis, a detailed understanding of the surface chemistry during and after the synthesis remains elusive. This dissertation leverages the high sensitivity of surface-enhanced Raman scattering (SERS) to probe the native surface of Ag nanocubes. In the first part of my thesis, I investigated Ag nanocubes synthesized using an HCl-mediated polyol method. I provided direct evidence to support the presence of Clon the surface of Ag nanocubes while they were suspended in the original reaction solution by resolving the Ag-Cl vibrational peak. I also investigated the synthesis in the absence of Cl- , proving the crucial role of Clin directing shape evolution. Moreover, I demonstrated that solvents used during sample preparation critically influenced surface chemistry and morphology retention. Acetone facilitated reversible aggregation and co-adsorption of carbonyl groups and Cl- , which suppressed oxidative etching and improved recovery during collection. Subsequent washing with water or ethanol enables effective redispersion while facilitating the desorption of Clions and the adsorption of poly(vinyl pyrrolidone) (PVP). The second part of my thesis investigated surface changes during seed-mediated growth of Ag nanocubes in an aqueous system. SERS revealed ligand exchange between PVP and the Clfrom CTAC, and the deposition of AgCl on Ag seeds. Upon addition of ascorbic acid, electron transfer increased surface electron density, enhancing SERS signals and enabling direct reduction of AgCl into Ag. Collectively, my thesis contributes to a deeper understanding of the mechanisms governing the synthesis and preservation of Ag nanocubes, offering guidance for the rational synthesis of Ag nanocrystals.
- 일반주제명
- Metals
- 일반주제명
- Dielectric properties
- 일반주제명
- Nanoparticles
- 일반주제명
- Symmetry
- 일반주제명
- Adsorption
- 일반주제명
- Silver
- 일반주제명
- Water
- 일반주제명
- Decomposition
- 일반주제명
- Energy
- 일반주제명
- Aldehydes
- 일반주제명
- Oxidation
- 일반주제명
- Surface chemistry
- 일반주제명
- Electromagnetism
- 일반주제명
- Electric fields
- 일반주제명
- Seeds
- 일반주제명
- Nanocrystals
- 일반주제명
- Chemical synthesis
- 일반주제명
- Extinction
- 일반주제명
- Agronomy
- 일반주제명
- Atomic physics
- 일반주제명
- Nanotechnology
- 일반주제명
- Chemistry
- 일반주제명
- Electromagnetics
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105505
■006m o d
■007cr#unu||||||||
■020 ▼a9798263326166
■035 ▼a(MiAaPQ)AAI32308008
■035 ▼a(MiAaPQ)GeorgiaTech78735
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a600
■1001 ▼aHuang, Qijia.
■24510▼aUnderstanding Changes to the Surface of Silver Nanocubes During Their Polyol Synthesis, Processing, and Seeded Growth
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a138 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Xia, Younan.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2025.
■520 ▼aSilver nanocubes have been extensively studied owing to their remarkable plasmonic and catalytic properties. Despite the success in synthesis, a detailed understanding of the surface chemistry during and after the synthesis remains elusive. This dissertation leverages the high sensitivity of surface-enhanced Raman scattering (SERS) to probe the native surface of Ag nanocubes. In the first part of my thesis, I investigated Ag nanocubes synthesized using an HCl-mediated polyol method. I provided direct evidence to support the presence of Clon the surface of Ag nanocubes while they were suspended in the original reaction solution by resolving the Ag-Cl vibrational peak. I also investigated the synthesis in the absence of Cl- , proving the crucial role of Clin directing shape evolution. Moreover, I demonstrated that solvents used during sample preparation critically influenced surface chemistry and morphology retention. Acetone facilitated reversible aggregation and co-adsorption of carbonyl groups and Cl- , which suppressed oxidative etching and improved recovery during collection. Subsequent washing with water or ethanol enables effective redispersion while facilitating the desorption of Clions and the adsorption of poly(vinyl pyrrolidone) (PVP). The second part of my thesis investigated surface changes during seed-mediated growth of Ag nanocubes in an aqueous system. SERS revealed ligand exchange between PVP and the Clfrom CTAC, and the deposition of AgCl on Ag seeds. Upon addition of ascorbic acid, electron transfer increased surface electron density, enhancing SERS signals and enabling direct reduction of AgCl into Ag. Collectively, my thesis contributes to a deeper understanding of the mechanisms governing the synthesis and preservation of Ag nanocubes, offering guidance for the rational synthesis of Ag nanocrystals.
■590 ▼aSchool code: 0078.
■650 4▼aMetals
■650 4▼aDielectric properties
■650 4▼aNanoparticles
■650 4▼aSymmetry
■650 4▼aAdsorption
■650 4▼aSilver
■650 4▼aWater
■650 4▼aDecomposition
■650 4▼aEnergy
■650 4▼aAldehydes
■650 4▼aOxidation
■650 4▼aSurface chemistry
■650 4▼aElectromagnetism
■650 4▼aElectric fields
■650 4▼aSeeds
■650 4▼aNanocrystals
■650 4▼aAtoms & subatomic particles
■650 4▼aChemical synthesis
■650 4▼aExtinction
■650 4▼aAgronomy
■650 4▼aAtomic physics
■650 4▼aNanotechnology
■650 4▼aChemistry
■650 4▼aElectromagnetics
■690 ▼a0791
■690 ▼a0285
■690 ▼a0748
■690 ▼a0652
■690 ▼a0485
■690 ▼a0607
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360312▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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