Search Constraints

Start Over
Filtering by: Creator Sirisaksoontorn, Weekit, 1985- Remove constraint Creator: Sirisaksoontorn, Weekit, 1985-

Search Results

  • Graphite intercalation compounds containing tetra-n-alkylammonium cations

    Creator:
    Sirisaksoontorn, Weekit
    Abstract:
    Novel donor-type graphite intercalation compounds (GICs) containing tetra-n-alkylammonium (TAA) cations have been synthesized by using both ion-exchange and electrochemical methods. Structural and compositional data of the resulting TAA-GICs are investigated by using powder X-ray diffraction (PXRD), one-dimensional electron density calculations, thermogravimetric and elemental analyses, and capillary zone electrophoresis (CZE). A...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Weekit Sirisaksoontorn for the degree of Doctor of Philosophy

  • The Electrochemical Synthesis of the Graphite Intercalation Compounds Containing Tetra-n-alkylammonium Cations

    Creator:
    Sirisaksoontorn, Weekit and Lerner, Michael M.
    Abstract:
    The electrochemical intercalation of tetra-n-alkylammonium (TAA) cations into graphite is investigated using galvanostatic reduction and cyclic voltammetry in TAABr/ dimethylsulfoxide (DMSO) electrolytes. Structural and compositional analyzes by X-ray diffraction, thermogravimetric and elemental analyzes show that stable graphite intercalation compounds (GICs) are formed with highly-flattened TAA cation bilayers for (C₅H₁₁)₄N⁺, (C₆H₁₃)₄N⁺,...
    Resource Type:
    Article
    Full Text:
    Synthesis of the Graphite Intercalation Compounds Containing Tetra-n-alkylammonium Cations Weekit

  • Preparation, Characterization, and Structure Trends for Graphite Intercalation Compounds Containing Pyrrolidinium Cations

    Creator:
    Zhang, Hanyang, Wu, Yuanyuan, Sirisaksoontorn, Weekit, Remcho, Vincent T., and Lerner, Michael M.
    Abstract:
    New graphite intercalation compounds (GICs) containing N,N-n-alkyl substituted pyrrolidinium cation intercalates (Py[subscript n.m], n, m = alkyl chain lengths) are obtained via cationic exchange from stage-1 donor-type GIC [Na(ethylenediamine)₁.₀]C₁₅. Powder X-ray diffraction and thermogravimetric analyses are used to determine the GIC structures and compositions. [Py₄.₈]C₄₇·0.71DMSO and [Py₈.₈]C₄₈ with intercalate monolayers...
    Resource Type:
    Article
    Full Text:
      Hanyang Zhang,† Yuanyuan Wu,† Weekit Sirisaksoontorn,‡ Vincent T. Remcho† and Michael M.  Lerner

  • Efficient Fabrication of Nanoporous Si and Si/Ge Enabled by a Heat Scavenger in Magnesiothermic Reactions

    Creator:
    Luo, Wei, Wang, Xingfeng, Meyers, Colin, Wannenmacher, Nick, Sirisaksoontorn, Weekit, Lerner, Michael M., and Ji, Xiulei
    Abstract:
    Magnesiothermic reduction can directly convert SiO₂ into Si nanostructures. Despite intense efforts, efficient fabrication of highly nanoporous silicon by Mg still remains a significant challenge due to the exothermic reaction nature. By employing table salt (NaCl) as a heat scavenger for the magnesiothermic reduction, we demonstrate an effective route to...
    Resource Type:
    Article
    Full Text:
    Wannenmacher2, Weekit Sirisaksoontorn1, Michael M. Lerner1 & Xiulei Ji1 1Department of Chemistry, 2Department

  • New Graphite Intercalation Chemistry with Ethers and Amines

    Creator:
    Zhang, Hanyang
    Abstract:
    Novel donor-typed ternary graphite intercalation compounds (GICs) are synthesized and characterized containing (1) pyrrolidinium cations with DMSO co-intercalates; (2) alkali metal cations with crown ether co-intercalates; and (3) alkali metal cations with polyethylene glycol co-intercalates. Structural and compositional data are obtained for the stable products. A new ether-amine co-intercalate exchange...
    Resource Type:
    Dissertation
    Full Text:
    programming computation, and the past and present members of the Lerner group: Dr. Weekit Sirisaksoontorn

  • Novel ternary graphite intercalation compounds of alkali metal cations and amines

    Creator:
    Maluangont, Tosapol
    Abstract:
    Novel ternary graphite intercalation compounds (GICs) of alkali metal cations and a wide variety of amines have been synthesized by one-pot chemical syntheses. Alkali metals studied includes Li, Na and K. The families of amines employed are nalkylamines, branched alkylamines, and different structural isomers of diamines and polyamines. Intragallery structures...
    Resource Type:
    Dissertation
    Full Text:
    -Monkul, Weekit Sirisaksoontorn, and Amila Liyanage. I would like to thanks friends for supports

  • Synthesis of Intercalation Compounds and Nanocomposites of Inorganic Layered Hosts

    Creator:
    Liyanage, Medagama Liyanage Amila Udayanga
    Abstract:
    Novel synthetic strategies are developed to prepare new intercalation compounds and nanocomposites with several layered hosts (NiPS₃, Na-montmorillonite, MoS₂ and MoO₃). In these products, alkali metals are ionic intercalates and linear polymers, dendrimers or amines act as co-intercalates. In addition to new synthetic approaches, new structures are identified and characterized....
    Resource Type:
    Dissertation
    Full Text:
    . Tosapol Maluangnont, Dr. Esther Ikhuoria, Dr. Weekit Sirisaksoontorn, Hanyang Zhang, and

  • New Graphite Intercalation Chemistry with Alkaline Earth Metals

    Creator:
    Xu, Wei
    Abstract:
    Novel graphite intercalation compounds (GICs) and associated chemistry have been explored, specifically: (1) containing alkyl- substituted imidazolium cations; (2) a series containing alkaline earth metal (Mg, Ca, Sr, Ba) cations with ethylenediamine (en) co-intercalates; (3) showing reversible intragallery M-M bonding and (4) via electrochemical intercalation of Mg cations with potential...
    Resource Type:
    Dissertation

  • Graphite intercalation with fluoroanions by chemical and electrochemical methods

    Creator:
    Özmen Monkul, Bahar
    Abstract:
    New acceptor-type graphite intercalation compounds (GICs) containing perfluoroalkyl anions have been synthesized by using both chemical and electrochemical methods and characterized by elemental and thermogravimetric analyses. Investigation into these graphite intercalation compounds can provide novel materials and a detailed understanding of their properties. GICs of composition Cx[FB(C₂F₅)₃]·δF are prepared for...
    Resource Type:
    Dissertation
    Full Text:
    and Weekit Sirisaksoontorn, thank you for sharing your ideas and suggestions with me. Amila

  • Chemical transformation of rice husk ash for sustainable, constructable, and durable binary cementitious system

    Creator:
    Prasittisopin, Lapyote
    Abstract:
    The production of cement and concrete results in the production of large amounts of CO₂ emissions which can have significant negative environmental impacts. Using supplementary cementing materials (SCMs) as a cement replacement is an effective solution to reduce these negative environmental impacts, as most SCMs are waste by-products from other...
    Resource Type:
    Dissertation
    Full Text:
    , Weekit Sirisaksoontorn of the Department of Chemistry, and Noon Prasertpalichatr of Materials Science