Electrochemical Nanoparticle Sizing Via Nano‐Impacts: How Large a Nanoparticle Can be Measured?

ChemistryOpen

Thomas R. Bartlett¹  Stanislav V. Sokolov¹ 

[1] Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, UK

关键词: nano-impacts;    nanoparticles;    silver;    silver chloride;    size;   

DOI  :  10.1002/open.201500061

来源: Wiley

【 摘 要 】

Abstract

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]

【 授权许可】

CC BY-NC-ND   
© 2015 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.