Browsing by Author "Chen, Yung Sheng"

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Formation of Core/Shell-Type ZnO/CeO(2) Nanorods and CeO(2) Nanotube Arrays by Aqueous Synthesis and Wet-Etching
(2008-06-01)
Chen, Yung Sheng
;
Tseng, Tseung Yuen
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
Aqueous synthesis and wet-etching process for fabricating core/shell-type ZnO/CeO(2) nanorods and CeO(2) nanotube arrays without any chemical modification or assisted surfactant are reported. Ce ions are adsorbed on ZnO to form core/shell-type ZnO/CeO(2) nanorods and polycrystalline CeO(2) nanotubes are fabricated by wet-etching the ZnO cores with a dilute hydrochloric acid solution. The as-synthesized ZnO/CeO(2) nanorods reveal that the ZnO cores are coated with CeO(2) shells to form a plastered layer. The obtained CeO(2) nanotubes show a perfect hexagonal structure and large cavities. The possible formation mechanism for the core/shell-type ZnO/CeO(2) nanorods and CeO(2) nanotube arrays is discussed.
Formation of Core/Shell-Type ZnO/CeO2 Nanorods and CeO2 Nanotube Arrays by Aqueous Synthesis and Wet-Etching
(2008-06-01)
Chen, Yung Sheng
;
Tseng, Tseung Yuen
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
Aqueous synthesis and wet-etching process for fabricating core/shell-type ZnO/CeO2 nanorods and CeO2 nanotube arrays without any chemical modification or assisted surfactant are reported. Ce ions are adsorbed on ZnO to form core/shell-type ZnO/CeO2 nanorods and polycrystalline CeO2 nanotubes are fabricated by wet-etching the ZnO cores with a dilute hydrochloric acid solution. The as-synthesized ZnO/CeO2 nanorods reveal that the ZnO cores are coated with CeO2 shells to form a plastered layer. The obtained CeO2 nanotubes show a perfect hexagonal structure and large cavities. The possible formation mechanism for the core/shell-type ZnO/CeO2 nanorods and CeO2 nanotube arrays is discussed.