1. Preparation and characterization of CuO nanoparticles encapsulated in mesoporous Silica
- Author
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Wang, Peiyu, Zheng, Xiaoping, Wu, Xueyong, Wei, Xiufang, and Zhou, Ling
- Subjects
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COPPER oxide , *NANOPARTICLES , *MICROENCAPSULATION , *MESOPOROUS materials , *SILICA , *NANOCOMPOSITE materials , *ENERGY bands , *TRANSMISSION electron microscopy - Abstract
Abstract: CuO nanoparticles supported in mesoporous silica MCM-41 (or CuO-nano-MCM-41 nanocomposites) were prepared via an in situ method. A 2.10wt.% Cu loading was achieved without the loss of pore ordering. Highly dispersed and uniform CuO nanoparticles could be detected using transmission electron microscopy (TEM) confirming also the absence of large particles outside the mesopore silica. The bandgaps of the resulting CuO particles are widened from 1.7 to 3.15eV for an indirect allowed bandgap and from 3.25 to 4.43eV for a direct allowed interband transition owing to the quantum size effect. [Copyright &y& Elsevier]
- Published
- 2012
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