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2 results on '"Dacheng Zhao"'

1. Three-dimensional biomimetic mineralization of dense hydrogel templates

Author

Gao Liu, Dacheng Zhao, Tomsia, Antoni P., Minor, Andrew M., Xiangyun Song, and Saiz, Eduardo

Subjects
Biomimetics -- Structure, Biomimetics -- Chemical properties, Biomimetics -- Electric properties, Hydroxylapatite -- Chemical properties, Hydroxylapatite -- Structure, Sintering -- Usage, Chemistry
Abstract

An electric-current-assisted method is used for mineralizing dense hydrogels and creating hydroxyapatite/hydrogel composites with unique hierarchical structures. A hydroxyapatite/hydrogel composite is obtained with a large inorganic content and the sintered inorganic phase has a uniformly distributed porosity and its Brunauer-Emmett-Teller (BET) surface area is 0.68 [m.sup.2]/g after being heated to 1050 [degree]C.

Published
2009

2. Crystallization and photovoltaic properties of titania-coated polystyrene hybrid microspheres and their photocatalytic activity

Author

Ming Zhang, Ge Gao, Dacheng Zhao, Zhiying Li, and Fengqi Liu

Subjects
Polymerization -- Analysis, Polystyrene -- Chemical properties, Crystallization -- Analysis, Chemicals, plastics and rubber industries
Abstract

The hybrid microspheres with polystyrene core coated by titania nanoparticles were prepared by miniemulsion polymerization, and the as-prepared samples are characterized by SEM, XRD, TG-DTA, XPS, and SPS techniques. It was concluded that polymers in hybrid microspheres have an effect on crystallization and surface photovoltaic properties of TiO2.

Published
2005

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