Jump to main content
Jump to site search

Issue 10, 2010
Previous Article Next Article

One-pot synthesis of triangular gold nanoplates allowing broad and fine tuning of edge length

Author affiliations

Abstract

A photocatalytic approach was used to synthesize triangular nanoplates in aqueous solution. The synthesis is based on the reduction of a gold salt using a tin(IV) porphyrin as photocatalyst, cetyltrimethylammonium bromide (CTAB) as a stabilizing agent, and triethanolamine (TEA) as the final electron donor. The average edge length of the triangular nanoplates can be easily changed in the range 45–250 nm by varying the concentration of photocatalyst, and fine-tuning of the average edge length is achieved by varying the concentration of CTAB. Study of the mechanism of formation of the nanoplates by UV-vis and by transmission electron microscopy (TEM) shows that there is a first stage where formation of 5 nm seeds takes place, further growth is probably by fusion and by direct reduction of gold onto the preformed nanoparticles. The nanoparticles formed during the photocatalytic reduction of the gold precursor show an irregular shape that evolves to regular triangular nanoplates after ripening in solution for 24 h.

Graphical abstract: One-pot synthesis of triangular gold nanoplates allowing broad and fine tuning of edge length

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 May 2010, accepted on 21 Jun 2010 and first published on 16 Aug 2010


Article type: Paper
DOI: 10.1039/C0NR00337A
Citation: Nanoscale, 2010,2, 2209-2216
  •   Request permissions

    One-pot synthesis of triangular gold nanoplates allowing broad and fine tuning of edge length

    A. Miranda, E. Malheiro, E. Skiba, P. Quaresma, P. A. Carvalho, P. Eaton, B. de Castro, J. A. Shelnutt and E. Pereira, Nanoscale, 2010, 2, 2209
    DOI: 10.1039/C0NR00337A

Search articles by author

Spotlight

Advertisements