Preparation and Characterization of ZnO Hollow Spheres and ZnO−Carbon Composite Materials Using Colloidal Carbon Spheres as Templates

By Xi Wang, P. Hu, Fangli Yuan, Lingjie Yu. 2007

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In this paper, a general strategy for synthesis of carbon-based core/ZnO-shell-type composite and hollow materials is reported. These materials include colloidal carbon spheres@ZnO nanospheres, ZnO-carbon composite "dandelions", ZnO-carbon branched "dandelions", Au-ZnO-carbon composite "dandelions", and size-tunable hollow ZnO spheres. As-synthesized composite "dandelions" exhibited a color change, which originated from the surface plasmon resonance of gold nanoparticles, showing their optical application. All products obtained show well photocatalytic activities and ZnO-carbon composite "dandelions" have the highest photocatalytic efficiency in all products.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/e00245e428b70119cb88037dd8744dbd15512425