光谱学与光谱分析 |
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Study on Spectroscopic Properties of CuO Nanoparticles |
WANG Dan-jun1,GUO Li1,LI Dong-sheng1*,FU Feng1,WANG Wen-liang2,YAN Hong-tiao3 |
1. Department of Chemistry & Chemical Engineering, Yan’an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan’an 716000, China 2. School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, China 3. Department of Chemistry, Northwest University, Xi’an 710069, China |
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Abstract The precursor Cu2(NO3)(OH)3 was synthesized by homogeneous precipitation processing in ethanol-water(φ,1∶1)mixed solvent system using (CH2)6N4 as host-precipitates. CuO nanoparticles were prepared by heating Cu2(NO3)(OH)3 at different temperatures. XRD, FTIR, XPS, FT-Raman and UV-Vis absorption spectra techniques were applied to investigated spectrum properties of CuO nanoparticles. All of the obtained samples were indicated to be monoclinic CuO under XRD measurement. Consistent with the XRD results,the XPS method also revealed that the atomic ratio of Cu to O in our samples was 1∶1. With the increase in the calcinations temperature, the crystal of CuO grew up, the FTIR patterns revealed that the absorption of Cu—O and —OH bond in CuO nanoparticles blue-shifted and red-shifted at the same time, XPS spectrum indicated that the content of surface oxygen decreased, and the FT-Raman spectrum showed that the Raman scattering peak broadened with the decrease in the nano-CuO diameter; UV-Vis adsorption spectroscopy revealed that CuO has a wide adsorption peak at -350 nm, and the absorption edge blue-shifted with the size decreasing.
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Received: 2006-12-04
Accepted: 2007-03-08
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Corresponding Authors:
LI Dong-sheng
E-mail: LLLn1832@sina.com
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