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Title: Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Organized chains of copper oxide nanoparticles were synthesized, without palladium (Pd) activation, using the M13 filamentous virus as a biological template. The interaction of Cu precursor ions with the negatively charged viral coat proteins were studied with Fourier transform infrared spectroscopy, transmission electron microscopy, and energy dispersive x-ray spectroscopy. Discrete nanoparticles with an average diameter of 4.5 nm and narrow size distribution were closely spaced along the length of the high aspect ratio templates. The synthesized material was identified as a mixture of cubic Cuâ‚‚O and monoclinic CuO. UV/Vis absorption measurements were completed and a direct optical band gap of 2.87 eV was determined using Tauc's method. This value was slightly larger than bulk, signaling quantum confinement effects within the templated materials.
Authors:
 [1] ;  [1] ;  [2]
  1. Department of Electrical and Computer Engineering, University of California, Riverside, California 92521 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22305842
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; ASPECT RATIO; CHAINS; CONFINEMENT; COPPER OXIDES; DISTRIBUTION; FOURIER TRANSFORM SPECTROMETERS; INTERACTIONS; IONS; MINERALIZATION; MIXTURES; MONOCLINIC LATTICES; NANOPARTICLES; PRECURSOR; TRANSMISSION ELECTRON MICROSCOPY; X-RAY SPECTROSCOPY