In order to effectively broaden the absorption band edge of Cu-doped TiO2 nanotubes with simple and controllable preparation,electrochemical anodization was used to grow well organized Cu-Ti-O nanotube arrays on Cu5Ti95 alloy substrate with 5wt% Cu concentration and crystallized in oxygen atmosphere at 450℃ for 2h.The morphology,structure,and absorbility of annealed Cu-Ti-O nanotube arrays were characterized.The results showed that the tub length,diameter and thickness were ～5.8μm,～150nm and ～10-15nm,respectively.The transformation of anatase to rutile was occurred in the bottom of nanotubes after being annealed in O2 atmosphere at 450℃.The absorption edge of annealed Cu-Ti-O nanotube arrays had red-shifts to ～450nm.These provided a key experimental evidence for the future photo-electrochemical property researches.
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基金资助
国家自然科学基金项目(51302150);深圳市基础研究计划项目(JCYJ20150402103811551)
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