Monodisperse Platinum Nanospheres with Adjustable Diameters from 10 to 100 nm: Synthesis and Distinct Optical Properties
- 5 November 2008
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 8 (12) , 4588-4592
Abstract
We present a facile and reproducible method for synthesizing monodisperse platinum (Pt) spheres with sizes ranging from 10 to 100 nm in diameter and exceptionally small standard deviations of 3% for large spheres. The reaction takes place in aqueous solution using a multistep seed-mediated approach. The Pt nanospheres consist of several small crystallites resulting in a surface roughness of 5−10 nm. Extinction spectra are measured from particles dispersed in water and calculated for single particles which are found to be in excellent agreement. We obtain a linear correlation between the plasmon extinction maximum (from UV to the visible regions) and the particle diameter which might be of value for experimentalists in the field.Keywords
This publication has 59 references indexed in Scilit:
- Ionic interactions of microspheres. Reversible coating of Prussian blue nanoparticles on the submicrospheres of platinum(II) complexesMaterials Letters, 2008
- Optical Fabrication of Hollow Platinum Nanospheres by Excavating the Silver Core of Ag@Pt NanoparticlesAdvanced Materials, 2007
- One‐pot dual size‐ and shape selective synthesis of tetrahedral Pt nanoparticlesApplied Organometallic Chemistry, 2006
- From Self‐Assembly of Platinum Nanoparticles to Nanostructured MaterialsSmall, 2005
- Synthesis of platinum nanoparticles in microemulsions and their catalytic activity for the oxidation of carbon monoxideColloids and Surfaces A: Physicochemical and Engineering Aspects, 2003
- Shape-Controlled Synthesis of Gold and Silver NanoparticlesScience, 2002
- Morphology of Platinum Nanoparticles Protected by Poly(N-isopropylacrylamide)Langmuir, 2000
- Synthesis, Characterization, and Catalytic Properties of Colloidal Platinum Nanoparticles Protected by Poly(N-isopropylacrylamide)Langmuir, 1997
- Shape-Controlled Synthesis of Colloidal Platinum NanoparticlesScience, 1996
- “Cubic” Colloidal Platinum NanoparticlesChemistry of Materials, 1996