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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Publication Detail

Title: Effects of surface chemistry on the generation of reactive oxygen species by copper nanoparticles.

Authors: Shi, Miao; Kwon, Hyun Soo; Peng, Zhenmeng; Elder, Alison; Yang, Hong

Published In ACS Nano, (2012 Mar 27)

Abstract: Mercaptocarboxylic acids with different carbon chain lengths were used for stabilizing uniform 15 nm copper nanoparticles. The effects of surface chemistry such as ligand type and surface oxidation on the reactive oxygen species (ROS) generated by the copper nanoparticles were examined. Transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), UV-vis spectroscopy, and an acellular ROS assay show that ROS generation is closely related to the surface oxidation of copper nanoparticles. It was found that the copper nanoparticles with longer chain ligands had surfaces that were better protected from oxidation and a corresponding lower ROS generating capacity than did particles with shorter chain ligands. Conversely, the copper nanoparticles with greater surface oxidation also had higher ROS generating capacity.

PubMed ID: 22390268 Exiting the NIEHS site

MeSH Terms: No MeSH terms associated with this publication

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