View in EDS

A General Method for Growing Large Area Mesoporous Silica Thin Films on Flat Substrates with Perpendicular Nanochannels.

Saved in:
Bibliographic Details
Title: A General Method for Growing Large Area Mesoporous Silica Thin Films on Flat Substrates with Perpendicular Nanochannels.
Authors: Kun-Che Kao1, Cheng-Han Lin1, Tzu-Ying Chen1, Yi-Hsin Liu2 yliu@ntnu.edu.tw, Chung-Yuan Mou1 cymou@ntu.edu.tw
Source: Journal of the American Chemical Society. 3/25/2015, Vol. 137 Issue 11, p3779-3782. 4p.
Subjects: Biochemical substrates, Mesoporous silica, Mesoporous materials, Scanning electron microscopy, X-ray scattering
Abstract: Here we introduce a new synthetic approach to grow mesoporous silica thin films with vertical mesochannels on centimeter-sized substrates via an oil-induced co-assembly process. Adding an oil, i.e., decane, into a CTAB--EtOH--TEOS ammonia solution leads to thin-film formation of mesoporous silica of controlled thickness between 20 and 100 nm with vertical mesochannels on various surfaces. The vertical mesoporous channels were evidenced by grazing incidence small-angle X-ray scattering (GISAXS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) characterizations. Decane played two roles: (a) as a pore expansion agent (up to 5.7 ± 0.5 nm) and (b) inducing vertically oriented hexagonal mesophases of micelle--silica composite. The production of periodic and vertical nanochannels is very robust, over many different substrate surfaces (from silicon to polystyrene), various silica precursors (TEOS, fumed silica, or zeolite seed), and many oils (decane, petroleum ether, or ethyl acetate). This wide robustness in the formation of vertical nanophases is attributed to a unique mechanism of confined synthesis of surfactant--silicate between two identical thin layers of oils on a substrate. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 102130715
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: A General Method for Growing Large Area Mesoporous Silica Thin Films on Flat Substrates with Perpendicular Nanochannels.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Kun-Che+Kao%22">Kun-Che Kao</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cheng-Han+Lin%22">Cheng-Han Lin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tzu-Ying+Chen%22">Tzu-Ying Chen</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yi-Hsin+Liu%22">Yi-Hsin Liu</searchLink><relatesTo>2</relatesTo><i> yliu@ntnu.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Chung-Yuan+Mou%22">Chung-Yuan Mou</searchLink><relatesTo>1</relatesTo><i> cymou@ntu.edu.tw</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Chemical+Society%22">Journal of the American Chemical Society</searchLink>. 3/25/2015, Vol. 137 Issue 11, p3779-3782. 4p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Biochemical+substrates%22">Biochemical substrates</searchLink><br /><searchLink fieldCode="DE" term="%22Mesoporous+silica%22">Mesoporous silica</searchLink><br /><searchLink fieldCode="DE" term="%22Mesoporous+materials%22">Mesoporous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+scattering%22">X-ray scattering</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Here we introduce a new synthetic approach to grow mesoporous silica thin films with vertical mesochannels on centimeter-sized substrates via an oil-induced co-assembly process. Adding an oil, i.e., decane, into a CTAB--EtOH--TEOS ammonia solution leads to thin-film formation of mesoporous silica of controlled thickness between 20 and 100 nm with vertical mesochannels on various surfaces. The vertical mesoporous channels were evidenced by grazing incidence small-angle X-ray scattering (GISAXS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) characterizations. Decane played two roles: (a) as a pore expansion agent (up to 5.7 ± 0.5 nm) and (b) inducing vertically oriented hexagonal mesophases of micelle--silica composite. The production of periodic and vertical nanochannels is very robust, over many different substrate surfaces (from silicon to polystyrene), various silica precursors (TEOS, fumed silica, or zeolite seed), and many oils (decane, petroleum ether, or ethyl acetate). This wide robustness in the formation of vertical nanophases is attributed to a unique mechanism of confined synthesis of surfactant--silicate between two identical thin layers of oils on a substrate. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=102130715
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1021/Jacs.5b01180
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 4
        StartPage: 3779
    Subjects:
      – SubjectFull: Biochemical substrates
        Type: general
      – SubjectFull: Mesoporous silica
        Type: general
      – SubjectFull: Mesoporous materials
        Type: general
      – SubjectFull: Scanning electron microscopy
        Type: general
      – SubjectFull: X-ray scattering
        Type: general
    Titles:
      – TitleFull: A General Method for Growing Large Area Mesoporous Silica Thin Films on Flat Substrates with Perpendicular Nanochannels.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Kun-Che Kao
      – PersonEntity:
          Name:
            NameFull: Cheng-Han Lin
      – PersonEntity:
          Name:
            NameFull: Tzu-Ying Chen
      – PersonEntity:
          Name:
            NameFull: Yi-Hsin Liu
      – PersonEntity:
          Name:
            NameFull: Chung-Yuan Mou
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 25
              M: 03
              Text: 3/25/2015
              Type: published
              Y: 2015
          Identifiers:
            – Type: issn-print
              Value: 00027863
          Numbering:
            – Type: volume
              Value: 137
            – Type: issue
              Value: 11
          Titles:
            – TitleFull: Journal of the American Chemical Society
              Type: main
ResultId 1