Issue 6, 2010

Size-controlled synthesis of Pdnanocrystals using a specific multifunctional peptide

Abstract

Here we report a peptide-mediated synthesis of Pd NCs in aqueous solution with controllable size in the sub-10 nanometre regime. The specific multifunctional peptide Q7 selected using the phage display technique can bind to the Pd NC surface and act as a stabilizer to mediate Pd crystal nucleation and growth. At the nucleation stage, Q7 bound to and helped stabilize the different-sized small Pd NC nuclei achieved using different concentrations of the external reducing agent, NaBH4. At the growth stage, Q7 played the dual role of binding to and reducing the precursor onto the existing nuclei, which led to the further controllable growth of the Pd NCs. By using the variable sizes of nuclei as seeds, and by introducing different amounts of precursors Pd NCs with tunable sizes from 2.6 to 6.6 nm were achieved with good size distribution.

Graphical abstract: Size-controlled synthesis of Pd nanocrystals using a specific multifunctional peptide

Supplementary files

Article information

Article type
Communication
Submitted
16 Mar 2010
Accepted
12 Apr 2010
First published
12 May 2010

Nanoscale, 2010,2, 927-930

Size-controlled synthesis of Pd nanocrystals using a specific multifunctional peptide

C. Chiu, Y. Li and Y. Huang, Nanoscale, 2010, 2, 927 DOI: 10.1039/C0NR00194E

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