Fabrication and Surface Properties of Composite Films of SAM/Pt/ZnO/SiO 2

Handle URI:
http://hdl.handle.net/10754/598301
Title:
Fabrication and Surface Properties of Composite Films of SAM/Pt/ZnO/SiO 2
Authors:
Yao, Ke Xin; Zeng, Hua Chun
Abstract:
Through synthetic architecture and functionalization with self-assembled monolayers (SAMs), complex nanocomposite films of SAM/Pt/ZnO/SiO2 have been facilely prepared in this work. The nanostructured films are highly uniform and porous, showing a wide range of tunable wettabilities from superhydrophilicity to superhydrophobicity (water contact angles: 0° to 170°). Our approach offers synthetic flexibility in controlling film architecture, surface topography, coating texture, crystallite size, and chemical composition of modifiers (e.g., SAMs derived from alkanethiols). For example, wettability properties of the nanocomposite films can be finely tuned with both inorganic phase (i.e., ZnO/SiO2 and Pt/ZnO/SiO2) and organic phase (i.e., SAMs on Pt/ZnO/SiO2). Due to the presence of catalytic components Pt/ZnO within the nanocomposites, surface reactions of the organic modifiers can further take place at room temperature and elevated temperatures, which provides a means for SAM formation and elimination. Because the Pt/ZnO forms an excellent pair of metal-semiconductors for photocatalysis, the anchored SAMs can also be modified or depleted by UV irradiation (i.e., the films possess self-cleaning ability). Potential applications of these nanocomposite films have been addressed. Our durability tests also confirm that the films are thermally stable and structurally robust in modification- regeneration cycles. © 2008 American Chemical Society.
Citation:
Yao KX, Zeng HC (2008) Fabrication and Surface Properties of Composite Films of SAM/Pt/ZnO/SiO 2 . Langmuir 24: 14234–14244. Available: http://dx.doi.org/10.1021/la802528y.
Publisher:
American Chemical Society (ACS)
Journal:
Langmuir
Issue Date:
16-Dec-2008
DOI:
10.1021/la802528y
PubMed ID:
19360946
Type:
Article
ISSN:
0743-7463; 1520-5827
Sponsors:
The authors gratefully acknowledge the technical assistance provided by Miss Jie Ren in thin film preparation and XRD phase confirmation, and the financial supports provided by the National University of Singapore, Singapore, and the King Abdullah University of Science and Technology, Saudi Arabia.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorYao, Ke Xinen
dc.contributor.authorZeng, Hua Chunen
dc.date.accessioned2016-02-25T13:18:17Zen
dc.date.available2016-02-25T13:18:17Zen
dc.date.issued2008-12-16en
dc.identifier.citationYao KX, Zeng HC (2008) Fabrication and Surface Properties of Composite Films of SAM/Pt/ZnO/SiO 2 . Langmuir 24: 14234–14244. Available: http://dx.doi.org/10.1021/la802528y.en
dc.identifier.issn0743-7463en
dc.identifier.issn1520-5827en
dc.identifier.pmid19360946en
dc.identifier.doi10.1021/la802528yen
dc.identifier.urihttp://hdl.handle.net/10754/598301en
dc.description.abstractThrough synthetic architecture and functionalization with self-assembled monolayers (SAMs), complex nanocomposite films of SAM/Pt/ZnO/SiO2 have been facilely prepared in this work. The nanostructured films are highly uniform and porous, showing a wide range of tunable wettabilities from superhydrophilicity to superhydrophobicity (water contact angles: 0° to 170°). Our approach offers synthetic flexibility in controlling film architecture, surface topography, coating texture, crystallite size, and chemical composition of modifiers (e.g., SAMs derived from alkanethiols). For example, wettability properties of the nanocomposite films can be finely tuned with both inorganic phase (i.e., ZnO/SiO2 and Pt/ZnO/SiO2) and organic phase (i.e., SAMs on Pt/ZnO/SiO2). Due to the presence of catalytic components Pt/ZnO within the nanocomposites, surface reactions of the organic modifiers can further take place at room temperature and elevated temperatures, which provides a means for SAM formation and elimination. Because the Pt/ZnO forms an excellent pair of metal-semiconductors for photocatalysis, the anchored SAMs can also be modified or depleted by UV irradiation (i.e., the films possess self-cleaning ability). Potential applications of these nanocomposite films have been addressed. Our durability tests also confirm that the films are thermally stable and structurally robust in modification- regeneration cycles. © 2008 American Chemical Society.en
dc.description.sponsorshipThe authors gratefully acknowledge the technical assistance provided by Miss Jie Ren in thin film preparation and XRD phase confirmation, and the financial supports provided by the National University of Singapore, Singapore, and the King Abdullah University of Science and Technology, Saudi Arabia.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleFabrication and Surface Properties of Composite Films of SAM/Pt/ZnO/SiO 2en
dc.typeArticleen
dc.identifier.journalLangmuiren
dc.contributor.institutionNational University of Singapore, Singapore City, Singaporeen

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