Formation of metallic silver and copper in non-aqueous media by ultrasonic radiation

Martina Pilloni; Vijay Bhooshan Kumar; Guido Ennas; Ze'ev Porat; Alessandra Scano; Valentina Cabras; Aharon Gedanken

doi:10.1016/j.ultsonch.2018.04.018

Formation of metallic silver and copper in non-aqueous media by ultrasonic radiation

Martina Pilloni
, Vijay Bhooshan Kumar
, Guido Ennas
, Ze'ev Porat
, Alessandra Scano
, Valentina Cabras
, Aharon Gedanken

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Concentrated suspensions of silver and copper salts in silicone oil were heated to 200 °C and irradiated with ultrasonic energy for different time durations. Characterization of the products was done using X-ray powder diffraction. In most cases, metallic Ag or Cu were obtained, together with their oxide forms Ag₂O and Cu₂O. The salts, used as precursors, do not dissolve in silicone oil but rather form a heterogeneous system, and we assume that local heating, caused by the acoustic cavitation, enhanced their thermal decomposition and the formation of metallic particles. It was found that the presence of silver particles enhances the formation of metallic copper. This phenomenon was observed in the experiment with the acetate salts mixture.

Original language	English
Pages (from-to)	108-113
Number of pages	6
Journal	Ultrasonics Sonochemistry
Volume	47
DOIs	https://doi.org/10.1016/j.ultsonch.2018.04.018
State	Published - 1 Oct 2018

Keywords

Cavitation
Intramolecular reduction
Metal salts
Silicone oil
Sonochemistry
Thermally induced reduction

ASJC Scopus subject areas

Environmental Chemistry
Chemical Engineering (miscellaneous)
Radiology Nuclear Medicine and imaging
Acoustics and Ultrasonics
Organic Chemistry
Inorganic Chemistry

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10.1016/j.ultsonch.2018.04.018

Cite this

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title = "Formation of metallic silver and copper in non-aqueous media by ultrasonic radiation",

abstract = "Concentrated suspensions of silver and copper salts in silicone oil were heated to 200 °C and irradiated with ultrasonic energy for different time durations. Characterization of the products was done using X-ray powder diffraction. In most cases, metallic Ag or Cu were obtained, together with their oxide forms Ag2O and Cu2O. The salts, used as precursors, do not dissolve in silicone oil but rather form a heterogeneous system, and we assume that local heating, caused by the acoustic cavitation, enhanced their thermal decomposition and the formation of metallic particles. It was found that the presence of silver particles enhances the formation of metallic copper. This phenomenon was observed in the experiment with the acetate salts mixture.",

keywords = "Cavitation, Intramolecular reduction, Metal salts, Silicone oil, Sonochemistry, Thermally induced reduction",

author = "Martina Pilloni and Kumar, \{Vijay Bhooshan\} and Guido Ennas and Ze'ev Porat and Alessandra Scano and Valentina Cabras and Aharon Gedanken",

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doi = "10.1016/j.ultsonch.2018.04.018",

language = "English",

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TY - JOUR

T1 - Formation of metallic silver and copper in non-aqueous media by ultrasonic radiation

AU - Pilloni, Martina

AU - Kumar, Vijay Bhooshan

AU - Ennas, Guido

AU - Porat, Ze'ev

AU - Scano, Alessandra

AU - Cabras, Valentina

AU - Gedanken, Aharon

PY - 2018/10/1

Y1 - 2018/10/1

N2 - Concentrated suspensions of silver and copper salts in silicone oil were heated to 200 °C and irradiated with ultrasonic energy for different time durations. Characterization of the products was done using X-ray powder diffraction. In most cases, metallic Ag or Cu were obtained, together with their oxide forms Ag2O and Cu2O. The salts, used as precursors, do not dissolve in silicone oil but rather form a heterogeneous system, and we assume that local heating, caused by the acoustic cavitation, enhanced their thermal decomposition and the formation of metallic particles. It was found that the presence of silver particles enhances the formation of metallic copper. This phenomenon was observed in the experiment with the acetate salts mixture.

AB - Concentrated suspensions of silver and copper salts in silicone oil were heated to 200 °C and irradiated with ultrasonic energy for different time durations. Characterization of the products was done using X-ray powder diffraction. In most cases, metallic Ag or Cu were obtained, together with their oxide forms Ag2O and Cu2O. The salts, used as precursors, do not dissolve in silicone oil but rather form a heterogeneous system, and we assume that local heating, caused by the acoustic cavitation, enhanced their thermal decomposition and the formation of metallic particles. It was found that the presence of silver particles enhances the formation of metallic copper. This phenomenon was observed in the experiment with the acetate salts mixture.

KW - Cavitation

KW - Intramolecular reduction

KW - Metal salts

KW - Silicone oil

KW - Sonochemistry

KW - Thermally induced reduction

UR - https://www.scopus.com/pages/publications/85046828469

U2 - 10.1016/j.ultsonch.2018.04.018

DO - 10.1016/j.ultsonch.2018.04.018

M3 - Article

C2 - 29908599

AN - SCOPUS:85046828469

SN - 1350-4177

VL - 47

SP - 108

EP - 113

JO - Ultrasonics Sonochemistry

JF - Ultrasonics Sonochemistry

ER -

Formation of metallic silver and copper in non-aqueous media by ultrasonic radiation

Abstract

Keywords

ASJC Scopus subject areas

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