Publication detail

Top-down Cleaner Production of Nanoparticle Dispersions in Liquid Phase by Vibrating Granular Beds

Reverberi, A.P., Varbanov, P.S., Salerno, M., Soda, O., Vocciante, M., Fabiano, B.

Original Title

Top-down Cleaner Production of Nanoparticle Dispersions in Liquid Phase by Vibrating Granular Beds

Type

journal article in Scopus

Language

English

Original Abstract

A mechanosynthesis process aiming at producing stable particles dispersions embedded in a liquid phase is proposed, starting from spheres of a metal precursor subject to a progressive disaggregation carried out by a tribological process. The method consists in using a precursor in metal spheres of millimetric dimensions, placed in a suitable vessel together with a ceramic milling medium in a liquid phase. The vessel is subject to vertical oscillations at variable frequency, leading to a production of a micro- or nanometric dispersion of the pristine material in a liquid medium as a consequence of friction and impact between spheres. The process has been tested for Ag spheres at different operating conditions and the effect of frequency, hold-up fraction and capping agents dissolved in the liquid phase has been considered and related to the quality of the final product. The characterization of the solid phase has been carried out by dynamic scattering for particle diameter, giving distribution curves with average values at 11.7 and 16.9 nm using polyvinyl pyrrolidone as capping agent of two different molecular weights. The present indirect milling technique, as other analogous reagentless methods for the synthesis of nanodispersions, may represent a sustainable alternative to the standard wet chemical bottom-up schemes, owing to its cost-effectiveness and ease of realization.

Keywords

top-down; cleaner; production; nanoparticle; dispersions; liquid; phase; vibrating; granular; beds

Authors

Reverberi, A.P., Varbanov, P.S., Salerno, M., Soda, O., Vocciante, M., Fabiano, B.

Released

1. 9. 2022

Publisher

Italian Association of Chemical Engineering - AIDIC

ISBN

2283-9216

Periodical

Chemical Engineering Transactions

Number

94

State

Republic of Italy

Pages from

535

Pages to

540

Pages count

6

URL

http://www.cetjournal.it/cet/22/94/089.pdf

BibTex

@article{BUT179621,
  author="Petar Sabev {Varbanov}",
  title="Top-down Cleaner Production of Nanoparticle Dispersions in Liquid Phase by Vibrating Granular Beds",
  journal="Chemical Engineering Transactions",
  year="2022",
  number="94",
  pages="535--540",
  doi="10.3303/CET2294089",
  issn="2283-9216",
  url="http://www.cetjournal.it/cet/22/94/089.pdf"
}