Effect of copper salts and reducing agents on characteristics and antimicrobial activity of copper nanoparticles

Shiv Shankar; Jong Whan Rhim

doi:10.1016/j.matlet.2014.06.014

Effect of copper salts and reducing agents on characteristics and antimicrobial activity of copper nanoparticles

Shiv Shankar, Jong Whan Rhim

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

110 Citations (Scopus)

Abstract

Copper nanoparticles (CuNPs) were synthesized using different types of copper salts (copper acetate, copper chloride, and copper sulfate) and reducing agents (NaOH and ascorbic acid). The resulting solutions exhibited the maximum absorption peaks between 250-350 nm, which was caused by the change in the surface Plasmon resonance of CuNPs and clearly indicated the formation of CuNPs. The results of FE-SEM exhibited that the CuNPs of various shapes and size, depended upon the type of copper salts and reducing agents used. The FTIR results demonstrated the involvement of bioactive functional groups as reducing and capping agents. XRD spectra confirmed the crystalline nature of CuNPs. Furthermore, all the CuNPs exhibited strong antimicrobial activity against both, Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli) food-borne pathogens.

Original language	English
Pages (from-to)	307-311
Number of pages	5
Journal	Materials Letters
Volume	132
DOIs	https://doi.org/10.1016/j.matlet.2014.06.014
Publication status	Published - 1 Oct 2014

Bibliographical note

Funding Information:
This research was supported by the Agriculture Research Center ( ARC 710003 ) program of the Ministry for Agriculture, Food and Rural Affairs, Korea .

Keywords

Antimicrobial activity
Biomaterials
Copper
FTIR
Nanoparticles

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10.1016/j.matlet.2014.06.014

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title = "Effect of copper salts and reducing agents on characteristics and antimicrobial activity of copper nanoparticles",

abstract = "Copper nanoparticles (CuNPs) were synthesized using different types of copper salts (copper acetate, copper chloride, and copper sulfate) and reducing agents (NaOH and ascorbic acid). The resulting solutions exhibited the maximum absorption peaks between 250-350 nm, which was caused by the change in the surface Plasmon resonance of CuNPs and clearly indicated the formation of CuNPs. The results of FE-SEM exhibited that the CuNPs of various shapes and size, depended upon the type of copper salts and reducing agents used. The FTIR results demonstrated the involvement of bioactive functional groups as reducing and capping agents. XRD spectra confirmed the crystalline nature of CuNPs. Furthermore, all the CuNPs exhibited strong antimicrobial activity against both, Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli) food-borne pathogens.",

keywords = "Antimicrobial activity, Biomaterials, Copper, FTIR, Nanoparticles",

author = "Shiv Shankar and Rhim, {Jong Whan}",

note = "Funding Information: This research was supported by the Agriculture Research Center ( ARC 710003 ) program of the Ministry for Agriculture, Food and Rural Affairs, Korea .",

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T1 - Effect of copper salts and reducing agents on characteristics and antimicrobial activity of copper nanoparticles

AU - Shankar, Shiv

AU - Rhim, Jong Whan

N1 - Funding Information: This research was supported by the Agriculture Research Center ( ARC 710003 ) program of the Ministry for Agriculture, Food and Rural Affairs, Korea .

PY - 2014/10/1

Y1 - 2014/10/1

N2 - Copper nanoparticles (CuNPs) were synthesized using different types of copper salts (copper acetate, copper chloride, and copper sulfate) and reducing agents (NaOH and ascorbic acid). The resulting solutions exhibited the maximum absorption peaks between 250-350 nm, which was caused by the change in the surface Plasmon resonance of CuNPs and clearly indicated the formation of CuNPs. The results of FE-SEM exhibited that the CuNPs of various shapes and size, depended upon the type of copper salts and reducing agents used. The FTIR results demonstrated the involvement of bioactive functional groups as reducing and capping agents. XRD spectra confirmed the crystalline nature of CuNPs. Furthermore, all the CuNPs exhibited strong antimicrobial activity against both, Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli) food-borne pathogens.

AB - Copper nanoparticles (CuNPs) were synthesized using different types of copper salts (copper acetate, copper chloride, and copper sulfate) and reducing agents (NaOH and ascorbic acid). The resulting solutions exhibited the maximum absorption peaks between 250-350 nm, which was caused by the change in the surface Plasmon resonance of CuNPs and clearly indicated the formation of CuNPs. The results of FE-SEM exhibited that the CuNPs of various shapes and size, depended upon the type of copper salts and reducing agents used. The FTIR results demonstrated the involvement of bioactive functional groups as reducing and capping agents. XRD spectra confirmed the crystalline nature of CuNPs. Furthermore, all the CuNPs exhibited strong antimicrobial activity against both, Gram-positive (Listeria monocytogenes) and Gram-negative (Escherichia coli) food-borne pathogens.

KW - Antimicrobial activity

KW - Biomaterials

KW - Copper

KW - FTIR

KW - Nanoparticles

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U2 - 10.1016/j.matlet.2014.06.014

DO - 10.1016/j.matlet.2014.06.014

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SN - 0167-577X

VL - 132

SP - 307

EP - 311

JO - Materials Letters

JF - Materials Letters

ER -

Effect of copper salts and reducing agents on characteristics and antimicrobial activity of copper nanoparticles

Abstract

Bibliographical note

Keywords

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