Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Surface-passivated SBA-15-supported gold nanoparticles: Highly improved catalytic activity and selectivity toward hydrophobic substrates

    Access Status
    Fulltext not available
    Authors
    Gao, J.
    Zhang, X.
    Yang, Y.
    Ke, J.
    Li, Xin Yong
    Zhang, Y.
    Tan, F.
    Chen, J.
    Quan, X.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Gao, J. and Zhang, X. and Yang, Y. and Ke, J. and Li, X.Y. and Zhang, Y. and Tan, F. et al. 2013. Surface-passivated SBA-15-supported gold nanoparticles: Highly improved catalytic activity and selectivity toward hydrophobic substrates. Chemistry - An Asian Journal. 8 (5): pp. 934-938.
    Source Title
    Chemistry - An Asian Journal
    DOI
    10.1002/asia.201300088
    ISSN
    1861-4728
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/24573
    Collection
    • Curtin Research Publications
    Abstract

    Silanol groups on a silica surface affect the activity of immobilized catalysts because they can influence the hydrophilicity/hydrophobicity, matter transfer, or even transition state in a catalytic reaction. Previously, these silanol groups have usually been passivated by using surface-passivation reagents, such as alkoxysilanes, bis-silylamine reagents, chlorosilanes, etc., and surface passivation has typically been found in mesoporous-silicas-supported molecular catalysts and heteroatomic catalysts. However, this property has rarely been reported in mesoporous-silicas-supported metal-nanoparticle catalysts. Herein, we prepared an almost-superhydrophobic SBA-15-supported gold-nanoparticle catalyst by using surface passivation, in which the catalytic activity increased more than 14 times for the reduction of nitrobenzene compared with non-passivated SBA-15. In addition, this catalyst can selectively catalyze hydrophobic molecules under our experimental conditions, owing to its high (almost superhydrophobic) hydrophobic properties. Passive aggressive: Surface-passivated SBA-15-supported gold nanoparticles that were almost superhydrophobic, with a contact angle of 144°, were prepared by surface passivation. The catalytic activity of this catalyst was more than 14-times that of non-passivated SBA-15 for the reduction of nitrobenzene. This method is a general method for the preparation of surface-passivated catalysts. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

    Related items

    Showing items related by title, author, creator and subject.

    • Correlations of WO3 species and structure with the catalytic performance of the selective oxidation of cyclopentene to glutaraldehyde on WO3/TiO2 catalysts
      Lu, G.; Li, Xin Yong; Qu, Z.; Zhao, Q.; Li, H.; Shen, Y.; Chen, G. (2010)
      A series of WO3/TiO2 catalysts were synthesized by ultrasonic impregnation method using as-prepared TiO2 microspheres as support as a function of tungsten oxide species loading. The crystalline structure, molecular structure ...
    • Significance of surface-generated radicals in the gas-solid catalytic reactions
      Syed Hassan, Syed Shatir Asghrar (2010)
      The conversion of light hydrocarbons with solid catalysts is an important class of reactions in the chemical and energy industries. Our knowledge on the exceedingly complex reaction kinetics of these catalytic reactions, ...
    • Promoted catalytic performances of highly dispersed V-doped SBA-16 catalysts for oxidative dehydrogenation of ethane to ethylene
      Kong, L.; Li, J.; Liu, Q.; Zhao, Z.; Sun, Q.; Liu, Jian; Wei, Y. (2016)
      © 2016. V-doped SBA-16 catalysts (V-SBA-16) with 3D nanocage mesopores have been successfully synthesized by a modified one-pot method under weak acid condition. The obtained materials were characterized by means of small ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.