Synthesis of nanocomposites using glasses and mica as templates

D. Chakravorty, S. Basu, B. N. Pal, P. K. Mukherjee, B. Ghosh, K. Chatterjee, A. Bose, Santanu Bhattacharya, A. Banerjee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Various nanocomposites were synthesized using either a silica-based glass or mica crystallites as the medium. In some cases by an oxidation or a sulfidation treatment a core-shell nanostructure could be generated. Iron-iron oxide core-shell structured nanocomposites exhibited excellent humidity sensing behaviour. Gold-gold sulfide core-shell nanorods exhibited a number of optical absorption peaks which arose because of their structural characteristics. Nanoparticles of silver and silver oxide could be aligned in a polymethylmethacrylate film by an a.c. electric field of 1 MHz frequency. The composites showed large sensitivity to relative humidity. Lead sulfide nanowires of diameter, 1·2 nm, were grown within the nanochannels of Na-4 mica. These exhibited a semiconductor to metal transition at around 300 K. This arose because of high pressure generated on the nanowires. Copper sulfide nanowires grown within the Na-4 mica channels showed metallic behaviour. Silver core-silver orthosilicate shell nanostructures developed within a silicate glass medium showed discontinuous changes in resistivity at some specific temperatures. This was explained as arising due to excitation of Lamb modes at certain pressures generated because of thermal expansion mismatch of the core and the shell phases. Optical properties of iron core-iron oxide shell nanocomposites when analysed by effective medium theory led to the result of a metal non-metal transition for particle diameters below a critical value. Similar results were obtained from optical absorption data of silver nanoparticles grown in a tetrapeptide solution.

Original languageEnglish (US)
Pages (from-to)263-276
Number of pages14
JournalBulletin of Materials Science
Volume31
Issue number3
DOIs
StatePublished - Jun 2008
Externally publishedYes

Fingerprint

Mica
Silver
Nanocomposites
Nanowires
Glass
Sulfides
Iron oxides
Gold
Light absorption
Nanostructures
Atmospheric humidity
Iron
Silver oxides
Nanoparticles
Silicates
Polymethyl Methacrylate
Nanorods
Crystallites
Silicon Dioxide
Transition metals

Keywords

  • Glasses
  • Mica
  • Nanocomposites
  • Synthesis

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials

Cite this

Chakravorty, D., Basu, S., Pal, B. N., Mukherjee, P. K., Ghosh, B., Chatterjee, K., ... Banerjee, A. (2008). Synthesis of nanocomposites using glasses and mica as templates. Bulletin of Materials Science, 31(3), 263-276. https://doi.org/10.1007/s12034-008-0044-y

Synthesis of nanocomposites using glasses and mica as templates. / Chakravorty, D.; Basu, S.; Pal, B. N.; Mukherjee, P. K.; Ghosh, B.; Chatterjee, K.; Bose, A.; Bhattacharya, Santanu; Banerjee, A.

In: Bulletin of Materials Science, Vol. 31, No. 3, 06.2008, p. 263-276.

Research output: Contribution to journalArticle

Chakravorty, D, Basu, S, Pal, BN, Mukherjee, PK, Ghosh, B, Chatterjee, K, Bose, A, Bhattacharya, S & Banerjee, A 2008, 'Synthesis of nanocomposites using glasses and mica as templates', Bulletin of Materials Science, vol. 31, no. 3, pp. 263-276. https://doi.org/10.1007/s12034-008-0044-y
Chakravorty D, Basu S, Pal BN, Mukherjee PK, Ghosh B, Chatterjee K et al. Synthesis of nanocomposites using glasses and mica as templates. Bulletin of Materials Science. 2008 Jun;31(3):263-276. https://doi.org/10.1007/s12034-008-0044-y
Chakravorty, D. ; Basu, S. ; Pal, B. N. ; Mukherjee, P. K. ; Ghosh, B. ; Chatterjee, K. ; Bose, A. ; Bhattacharya, Santanu ; Banerjee, A. / Synthesis of nanocomposites using glasses and mica as templates. In: Bulletin of Materials Science. 2008 ; Vol. 31, No. 3. pp. 263-276.
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