title: Bi2 O3 Nanoparticle Clusters: Reversible Agglomeration Revealed by Imaging and Nano-Impact Experiments.
abstract: Colloidal suspensions of Bi2 O3 nanoparticles were studied in aqueous solution using imaging and electrochemical techniques. Nanoparticle tracking analysis revealed the particles to be agglomerated. In contrast, electrochemical detection via the nano-impacts technique showed almost exclusive detection of monomeric nanoparticles. Comparison of the two techniques allows the conclusion to be drawn that the agglomeration/deagglomeration of the nanoparticles is reversible. A minimum rate constant for the deagglomeration process was estimated.
authors.affiliation: Department of Chemistry, Oxford University, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK.
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Bartlett
authors.affiliation: Department of Chemistry, Oxford University, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK.
authors.forename: Stanislav V
authors.initials: SV
authors.lastname: Sokolov
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Holter
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
authors.forename: Neil
authors.initials: N
authors.lastname: Young
authors.affiliation: Department of Chemistry, Oxford University, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK. richard.compton@chem.ox.ac.uk.
authors.forename: Richard G
authors.initials: RG
authors.lastname: Compton
keywords: agglomeration; bismuth oxide; nano-impact; nanoparticles; voltammetry