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Ag_3PO_4/TiO_2纳米管阵列的制备及其可见光光催化活性 被引量:5

Fabrication and Visible-Light Photocatalytic Activity of Ag_3PO_4/TiO_2 Nanotube Arrays
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摘要 用浸渍-沉积法将Ag3PO4沉积在自组装TiO2纳米管阵列的管壁上制备Ag3PO4/TiO2纳米管阵列。用X射线衍射、扫描电子显微镜和紫外-可见漫反射光谱对样品进行表征。通过在可见光(λ>420nm)下降解水中的罗丹明B检测样品的光催化活性。结果表明:由于Ag3PO4与TiO2之间形成了异质结,在Ag3PO4的强可见光吸收性能和该异质结的协同作用下,Ag3PO4/TiO2异质结纳米管阵列的可见光光电催化活性高于单一的纯Ag3PO4和TiO2纳米管阵列膜。 Ag3PO4/TiO2 nanotube arrays were prepared via the deposition of Ag3PO4 on the tube wall of the self-organized TiO2 nanotube arrays by an impregnating-deposition method. The prepared samples were characterized by X-ray diffraction, scanning elec- tron microscope and ultraviolet visible absorption spectroscopy. The photocatalytic activity of the samples was evaluated by photo- catalytic degradation of rhodamine B aqueous solutions under visible-light irradiation (2 〉 420 nm). The results show that AgaPO4/TiO2 nanotube arrays exhibit a higher photocatalytic activity rather than the respective pure AgaPO4 and TiO2 nanotube arrays due to the synergetic effects of two factors including the strong visible absorption of Ag3PO4 and the formation of heterojunction.
出处 《硅酸盐学报》 EI CAS CSCD 北大核心 2012年第9期1242-1246,共5页 Journal of The Chinese Ceramic Society
基金 湖北省自然科学基金(No.2011CDA066 2008CDB014) 湖北省教育厅项目(No.Q20122507和Z20102601)资助
关键词 磷酸银 二氧化钛 纳米管阵列 光催化 可见光 siliver phosphate titanium dioxide nanotube arrays photocatalysis visible light
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