Effect of irradiation on deposition of CdS in fabricating co-axial heterostructure of TiO₂ nanotube arrays via chemical deposition

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• 作者：Rongjun Pan ; Yucheng Wu ; Zhenglin Li ; Zhijie Fang
• 关键词：TiO2 nanotube arrays ; Chemical deposition ; Irradiation ; CdS ; Performances
• 刊名：Applied Surface Science
• 出版年：15 February, 2014
• 年：2014
• 卷：292
• 期：Complete
• 页码：886-891
• 全文大小：1865 K

文摘

Highly-ordered TiO₂ nanotube arrays were synthesized electrochemically. Effect of irradiation on deposition of CdS in fabricating co-axial heterogeneous structure via chemical deposition was investigated. The field emission measurements revealed that irradiation with higher energy will help to achieve not only more CdS, but also neater and more intimate heterostructure through exerting influences on ion migration into the tubes and attachment of ions onto the tube walls. The XRD measurements revealed that the deposited nanotubes are composed of anatase TiO₂, metallic Ti, and CdS. The optical characterization revealed that the photoabsorption and absorption activity are correlated with the energy of irradiation. The photoelectrochemical measurements revealed that the photocurrent density are also correlated with the energy of the irradiation. The stability of the obtained structures was governed by the contact between CdS and TiO₂ as well as the amount of CdS.