Controlled synthesis of octahedral Cu2O on TiO2 nanotube arrays by electrochemical deposition
Author(s)
Huang, Lei
Peng, Feng
Wang, Hongjuan
Yu, Hao
Geng, Wei
Yang, Jian
Zhang, Shanqing
Zhao, Huijun
Year published
2011
Metadata
Show full item recordAbstract
TiO2 nanotube (TNT) arrays loaded with octahedral Cu2O particles were successfully prepared by anodic oxidation followed with cathodic deposition. Annealing the TNT arrays before the cathodic deposition could effectively lower the electric resistance at the bottom of TNTs walls and then favor the deposition of octahedral Cu2O particles into TNT arrays. The effects of the applied reduction potential, the CuSO4 concentration, the pH value, the reaction temperature on the kinetics of cathode deposition and the Cu2O morphology were investigated. It was found that octahedral Cu2O particles were obtained under larger deposition ...
View more >TiO2 nanotube (TNT) arrays loaded with octahedral Cu2O particles were successfully prepared by anodic oxidation followed with cathodic deposition. Annealing the TNT arrays before the cathodic deposition could effectively lower the electric resistance at the bottom of TNTs walls and then favor the deposition of octahedral Cu2O particles into TNT arrays. The effects of the applied reduction potential, the CuSO4 concentration, the pH value, the reaction temperature on the kinetics of cathode deposition and the Cu2O morphology were investigated. It was found that octahedral Cu2O particles were obtained under larger deposition current, while amorphous Cu2O were obtained under smaller current.
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View more >TiO2 nanotube (TNT) arrays loaded with octahedral Cu2O particles were successfully prepared by anodic oxidation followed with cathodic deposition. Annealing the TNT arrays before the cathodic deposition could effectively lower the electric resistance at the bottom of TNTs walls and then favor the deposition of octahedral Cu2O particles into TNT arrays. The effects of the applied reduction potential, the CuSO4 concentration, the pH value, the reaction temperature on the kinetics of cathode deposition and the Cu2O morphology were investigated. It was found that octahedral Cu2O particles were obtained under larger deposition current, while amorphous Cu2O were obtained under smaller current.
View less >
Journal Title
Materials Chemistry and Physics
Volume
130
Issue
1-2
Subject
Solid state chemistry
Macromolecular and materials chemistry
Colloid and surface chemistry
Electrochemistry
Materials engineering
Nanotechnology