Complementary and synergic effects of microwaves and ultrasound in metal-assisted synthesis | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

2157883

Reference Type

Journal Article

Title

Complementary and synergic effects of microwaves and ultrasound in metal-assisted synthesis

Author(s)

Cintas, P; Carnaroglio, D; Rinaldi, L; Cravotto, G

Year

2012

Is Peer Reviewed?

Yes

Journal

Chimica Oggi
ISSN: 0392-839X

Volume

Issue

Page Numbers

33-35

Web of Science Id

WOS:000305146800007

Abstract

While synthetic protocols involving metal dispersions have long been a favourite domain in sonochemistry, the irradiation of metal particles with microwaves has been a forbidden practice because of the risk of arcing and explosion. Modern reactors and suitable procedures under inert atmosphere, make metal-assisted reactions under combined ultrasound-microwave irradiation feasible and safe. The interaction of acoustic and electromagnetic waves with a heterogeneous reaction mixture containing metals usually strongly accelerates the process. Both the hot spots generated by acoustic cavitation and dielectric heating activate the metal surface enhancing its reactivity even with relatively low metal content.

Keywords

Ultrasound; microwaves; combined ultrasound and microwaves; metal based synthesis; process intensification