rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Development and Application of Surface-active Graphene Quantum Dots
  name:
    name part: Ma, Rong
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Wang, Qingsheng
    role:
      role term: thesis advisor.
  name:
    name part: Texas A&M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2023
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Graphene quantum dots (GQDs), as one of derivatives of graphene, are essentially zero- dimensional for graphene. Their extremely small size endows them with more intriguing properties. Additionally, plenty of oxygen-containing groups are available on their surface or edges, which provide GQDs a great potential for surface modifications. Upon surface functionalization, the applications of GQDs nanoplates have been greatly enhanced in Pickering emulsification and fabrication of flame retardant polymer nanocomposites. First of all, amphiphilic GQDs functionalized with dodecyl alkyl groups (C-GQDs) which are synthesized by a facile one-step method. The amphiphilicity could be acquired controllably and effectively, which make them used as Pickering emulsifier. The C-GQDs based Pickering emulsion could be obtained with a very low concentration, which could be utilized in a large-scale application considered about eco-friendly and cost-effective manner. Moreover, the pH-responsive properties of C-GQDs make these nanoplatelets recycled and reused in Pickering emulsion system. In order to improve the salt tolerance of GQDs as Pickering emulsifier, the GQDs was functionalized with zwitterionic structure (ZGQDs), which made them could be used under high ionic strength. Meanwhile, ZGQDs have the capacity to regulate molecular diffusion at interface, which made them have potential to be applied in controlled-release fields. Furthermore, GQDs, as a type of carbon-based nanomaterials, have been widely used in fabricating polymer composites to improve the mechanical, thermal and flame retardant properties. C-GQDs, as a kind of stabilizer, could be used to fabricated PS nanocomposites which were coated with C-GQDs via an in-suit Pickering emulsion polymerization method The incorporation of C-GQDs onto the PS surface increased the thermal stability and flame retardancy of PS nanocomposites. Moreover, GQDs, as a kind of zero-dimensional nanomaterials, have potential to be used to func…
  note: by Rong Ma.
  note: "Major Subject: Chemical Engineering"
  note: Includes vita.
  note: Doctor of Philosophy Texas A&M University 2022 https://hdl.handle.net/1969.1/197807
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major Chemical Engineering
  subject:
    topic: Graphene quantum dots
  subject:
    topic: Interface
  subject:
    topic: Encapsulation
  subject:
    topic: Controlled-release
  subject:
    topic: Flame retardant
  identifier: https://hdl.handle.net/1969.1/197807
  record info:
    record content source: TXA
    record creation date: 240823
    record change date: 20240829173455.8
    record identifier: in00005468371
    language of cataloging:
      language term: eng