writer：Liu, Yan，Zhang, Yong Cai，Zhang, Ming
keywords：Semiconductors, Nanomaterials, Green synthesis, Optical materials and properties, CdO2 and Hydrothermal synthesis
source：期刊
specific source：Materials Letters
Issue time：2010年
A green hydrothermal method has been developed for the synthesis of CdO2 nanoparticles from Cd(OH)2 powder and 6 vol.% H2O2 aqueous solution at 80–150 °C. The characterization results from X-ray diffraction, transmission electron microscopy, and thermal gravimetric and differential scanning calorimetry analysis disclosed that the resultant products were pure cubic phase CdO2 nanoparticles with the sizes in the range of about 11–13 nm. The UV–vis absorption spectra revealed that the as-synthesized CdO2nanoparticles had similar optical band gaps of about 3.85 eV. The Raman spectra of the as-synthesized CdO2 nanoparticles displayed two obvious peaks at about 348 and 830/833 cm–1, a characteristic of pyrite-type IIB-peroxides.