Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials

Clean silica surfaces have a high surface energy. In consequence, colliding silica nanoparticles will stick rather than bounce over a wide range of collision velocities. Often, however, silica surfaces are passivated by adsorbates, in particular water, which considerably reduce the surface energy. W...

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Detalles Bibliográficos
Autores principales: Nietiadi, Maureen L., Rosandi, Yudi, Urbassek, Herbert M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2020
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7105590/
https://www.ncbi.nlm.nih.gov/pubmed/32232683
http://dx.doi.org/10.1186/s11671-020-03296-y
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author Nietiadi, Maureen L.
Rosandi, Yudi
Urbassek, Herbert M.
author_facet Nietiadi, Maureen L.
Rosandi, Yudi
Urbassek, Herbert M.
author_sort Nietiadi, Maureen L.
collection PubMed
description Clean silica surfaces have a high surface energy. In consequence, colliding silica nanoparticles will stick rather than bounce over a wide range of collision velocities. Often, however, silica surfaces are passivated by adsorbates, in particular water, which considerably reduce the surface energy. We study the effect of surface hydroxylation on silica nanoparticle collisions by atomistic simulation, using the REAX potential that allows for bond breaking and formation. We find that the bouncing velocity is reduced by more than an order of magnitude compared to clean nanoparticle collisions.
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spelling pubmed-71055902020-04-06 Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials Nietiadi, Maureen L. Rosandi, Yudi Urbassek, Herbert M. Nanoscale Res Lett Nano Express Clean silica surfaces have a high surface energy. In consequence, colliding silica nanoparticles will stick rather than bounce over a wide range of collision velocities. Often, however, silica surfaces are passivated by adsorbates, in particular water, which considerably reduce the surface energy. We study the effect of surface hydroxylation on silica nanoparticle collisions by atomistic simulation, using the REAX potential that allows for bond breaking and formation. We find that the bouncing velocity is reduced by more than an order of magnitude compared to clean nanoparticle collisions. Springer US 2020-03-30 /pmc/articles/PMC7105590/ /pubmed/32232683 http://dx.doi.org/10.1186/s11671-020-03296-y Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Nano Express
Nietiadi, Maureen L.
Rosandi, Yudi
Urbassek, Herbert M.
Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
title Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
title_full Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
title_fullStr Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
title_full_unstemmed Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
title_short Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
title_sort bouncing of hydroxylated silica nanoparticles: an atomistic study based on reax potentials
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7105590/
https://www.ncbi.nlm.nih.gov/pubmed/32232683
http://dx.doi.org/10.1186/s11671-020-03296-y
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