Impacts reveal and quantify monolayer adsorption on single alumina particles
- Authors: Lin Q.1, Compton R.G.1
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Affiliations:
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory
- Issue: Vol 53, No 9 (2017)
- Pages: 994-1002
- Section: Section 2. Physicochemical Mechanics
- URL: https://journals.rcsi.science/1023-1935/article/view/189040
- DOI: https://doi.org/10.1134/S1023193517090087
- ID: 189040
Cite item
Abstract
A particle impact method is used to quantify adsorption of redox active species on single insulating particles by simulation of individual spike transient, circumventing the complexity of measurements with ensembles of particles. For catechol, anthraquinone and chloranil molecules and the ferrocene moiety of poly(vinylferrocene) adsorbed on alumina, the surface coverages are found to be (3.0 ± 0.9), (1.5 ± 1.4), (2.7 ± 1.7) and (2.1 ± 0.7) × 10–10 mol cm–2, and the charge diffusion coefficients are found as (2.5 ± 0.5), (7.9 ± 4.0), (0.4 ± 0.2) and (2.4 ± 0.8) × 10–6 cm2 s–1, respectively.
Keywords
About the authors
Qianqi Lin
Department of Chemistry, Physical and Theoretical Chemistry Laboratory
Email: richard.compton@chem.ox.ac.uk
United Kingdom, South Parks Road, Oxford, OX1 3QZ
Richard G. Compton
Department of Chemistry, Physical and Theoretical Chemistry Laboratory
Author for correspondence.
Email: richard.compton@chem.ox.ac.uk
United Kingdom, South Parks Road, Oxford, OX1 3QZ