Electrochemical Nanoparticle Sizing Via Nano-Impacts: How Large a Nanoparticle Can be Measured?
The field of nanoparticle (NP) sizing encompasses a wide array of techniques, with electron microscopy and dynamic light scattering (DLS) having become the established methods for NP quantification; however, these techniques are not always applicable. A new and rapidly developing method that addresses the limitations of these techniques is the electrochemical detection of NPs in solution. The 'nano-impacts' technique is an excellent and qualitative in situ method for nanoparticle characterization. Two complementary studies on silver and silver bromide nanoparticles (NPs) were used to assess the large radius limit of the nano-impact method for NP sizing. Noting that by definition a NP cannot be larger than 100 nm in diameter, we have shown that the method quantitatively sizes at the largest limit, the lower limit having been previously reported as ∼6 nm.1.
Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford South Parks Road, Oxford, OX1 3QZ, UK.
Thomas R
TR
Bartlett
Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford South Parks Road, Oxford, OX1 3QZ, UK.
Stanislav V
SV
Sokolov
Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford South Parks Road, Oxford, OX1 3QZ, UK.
Richard G
RG
Compton
nano-impacts; nanoparticles; silver; silver chloride; size