Publication

Morphology Selective Cu2O Microcrystal by Electrodeposition on TiO2 Nanotubes for Enhancing Photoelectrochemical Performance

조회수 : 22 등록일 : 2018.12.05 00:00

저자 : Kang, YS (Kang, Young Soo)
출처 : CRYSTAL GROWTH & DESIGN
출판일 : 2018.11.01


Morphology Selective Cu2O Microcrystal by Electrodeposition on TiO2 Nanotubes for Enhancing Photoelectrochemical Performance


Kang, YS (Kang, Young Soo)1,2 ] Kim, CW (Kim, Chang Woo)3 ]


[ 1 ] Sogang Univ, Korea Ctr Artificial Photosynth, 1 Shinsu Dong, Seoul 121742, South Korea
[ 2 ] Sogang Univ, Dept Chem, 1 Shinsu Dong, Seoul 121742, South Korea
[ 3 ] Pukyong Natl Univ, Dept Graph Arts Informat Engn, Coll Engn, 365 Sinseon Ro, Busan 48547, South Korea



Crystal growth of a second metal oxide with controllable facets on the surface of a primary metal oxide has been raised as a significant research in energy storage and conversion devices. However, because of the lack of understanding of individual crystal structures, available metal oxides have been limited for secondary crystal growth. In the present work, we demonstrate a morphology selective reaction of a Cu2O microcrystal from a truncated octahedra to a truncated cube on TiO2 nanotube arrays. Single crystal Cu2O grown on TiO2 nanotube arrays was fabricated through a two-step approach: (1) an electrochemical anodization of Ti foil and its heat treatment for an anatase TiO2 nanotube, (2) an immersion of the TiO2 nanotube into a Cu nitrate ethanolic solution and its electrodeposition into a Cu-lactate complex solution. Our findings for a Cu2O microcrystal with controllable facets on TiO2 nanotube arrays give an interesting insight into the crystal growth from nanoparticles to microcrystals in the scientific view of a morphological evolution from (111) facet to (100) facet. With a crystal facet-controlled synthetic strategy, their crystal facet dependent photoelectrochemical properties are evaluated in detail.






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