Open AccessElectrochemical Nanoparticle Sizing Via Nano‐Impacts: How Large a Nanoparticle Can be Measured?
Author(s) -
Bartlett Thomas R.,
Sokolov Stanislav V.,
Compton Richard G.
Publication year - 2015
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.201500061
Subject(s) - nanoparticle , sizing , nanotechnology , dynamic light scattering , detection limit , materials science , nano , silver nanoparticle , electrochemistry , chemistry , chromatography , electrode , organic chemistry , composite material
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][, ]