Microstructure of precipitated Au nanoclusters in TiO 2

C. M. Wang, V. Shutthanandan, Y. Zhang, D. R. Baer, L. E. Thomas, S. Thevuthasan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Gold nanoclusters dispersed in single crystal TiO 2 (110) have been formed by 2MeV Au 2+ implantation to an ion fluence of 1×10 17 cm -2 at 300 K and 975 K followed by annealing at 1275 K for 10 hours. The morphological features, size and crystallographic orientation of the Au nanoclusters with respect to the TiO 2 matrix have been investigated using conventional transmission electron microscopy and electron diffractions. In particular, the interface structure between the Au nanoclusters and TiO 2 was investigated. Atomic structural model of interface between Au and TiO 2 was established based on high-resolution transmission electron microscopy (HRTEM) imaging and HRTEM image simulations. Two types of orientation relationship can be identified, Au<110>//TiO 2[001] and Au{111}//TiO 2(200), and Au<110>//TiO 2[001] and Au{111}//TiO 2(110). Au clusters are faceted along Au{112}and Au{ 111} or Au {220} and Au{002} planes. The precipitated Au clusters show extensive (111) twins. These orientation relationships are the same for Au clusters grown on TiO 2(110) surface, indicating that lowering interfacial energy to be a governing factor for setting the orientation relationship.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsS. Komarneni, J.C. Parker, J.J. Watkins
Pages249-253
Number of pages5
Volume788
Publication statusPublished - 2003
Externally publishedYes
EventContinuous Nanophase and Nanostructured Materials - Boston, MA., United States
Duration: 1 Dec 20035 Dec 2003

Other

OtherContinuous Nanophase and Nanostructured Materials
CountryUnited States
CityBoston, MA.
Period1/12/035/12/03

Fingerprint

Nanoclusters
High resolution transmission electron microscopy
Microstructure
Interfacial energy
Electron diffraction
Ion implantation
Gold
Single crystals
Annealing
Ions
Transmission electron microscopy
Imaging techniques

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Wang, C. M., Shutthanandan, V., Zhang, Y., Baer, D. R., Thomas, L. E., & Thevuthasan, S. (2003). Microstructure of precipitated Au nanoclusters in TiO 2 In S. Komarneni, J. C. Parker, & J. J. Watkins (Eds.), Materials Research Society Symposium - Proceedings (Vol. 788, pp. 249-253)

Microstructure of precipitated Au nanoclusters in TiO 2 . / Wang, C. M.; Shutthanandan, V.; Zhang, Y.; Baer, D. R.; Thomas, L. E.; Thevuthasan, S.

Materials Research Society Symposium - Proceedings. ed. / S. Komarneni; J.C. Parker; J.J. Watkins. Vol. 788 2003. p. 249-253.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wang, CM, Shutthanandan, V, Zhang, Y, Baer, DR, Thomas, LE & Thevuthasan, S 2003, Microstructure of precipitated Au nanoclusters in TiO 2 in S Komarneni, JC Parker & JJ Watkins (eds), Materials Research Society Symposium - Proceedings. vol. 788, pp. 249-253, Continuous Nanophase and Nanostructured Materials, Boston, MA., United States, 1/12/03.
Wang CM, Shutthanandan V, Zhang Y, Baer DR, Thomas LE, Thevuthasan S. Microstructure of precipitated Au nanoclusters in TiO 2 In Komarneni S, Parker JC, Watkins JJ, editors, Materials Research Society Symposium - Proceedings. Vol. 788. 2003. p. 249-253
Wang, C. M. ; Shutthanandan, V. ; Zhang, Y. ; Baer, D. R. ; Thomas, L. E. ; Thevuthasan, S. / Microstructure of precipitated Au nanoclusters in TiO 2 Materials Research Society Symposium - Proceedings. editor / S. Komarneni ; J.C. Parker ; J.J. Watkins. Vol. 788 2003. pp. 249-253
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