Fe、N共掺杂TiO2纳米管阵列的制备及可见光光催化活性

doi:10.3866/PKU.WHXB201112231

物理化学学报 >> 2012, Vol. 28 >> Issue (03): 635-640.doi: 10.3866/PKU.WHXB201112231

Fe、N共掺杂TiO₂纳米管阵列的制备及可见光光催化活性

吴奇, 苏钰丰, 孙岚, 王梦晔, 王莹莹, 林昌健

厦门大学化学化工学院化学系, 福建厦门 361005

收稿日期:2011-11-14 修回日期:2011-12-15 发布日期:2012-02-23
通讯作者: 孙岚 E-mail:sunlan@xmu.edu.cn
基金资助:
国家自然科学基金(51072170, 21021002), 福建省自然科学基金(2011J01057)和国家基础科学人才培养基金(J1030415)资助项目

Preparation and Visible Light Photocatalytic Activity of Fe-N Codoped TiO₂ Nanotube Arrays

WU Qi, SU Yu-Feng, SUN Lan, WANG Meng-Ye, WANG Ying-Ying, LIN Chang-Jian

Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received:2011-11-14 Revised:2011-12-15 Published:2012-02-23
Contact: SUN Lan E-mail:sunlan@xmu.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (51072170, 21021002), Natural Science Foundation of Fujian Province, China (2011J01057), and National Foundation for Fostering Talents of Basic Science, China (J1030415).

摘要/Abstract

摘要： 应用电化学阳极氧化法结合浸渍和退火后处理制备了Fe 和N共掺杂的TiO₂纳米管阵列光催化剂, 并用场发射扫描电镜(FESEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)和俄歇电子能谱(AES)仪对其进行了表征. 结果表明, Fe、N共掺杂对TiO₂纳米管阵列的形貌和结构没有明显影响, Fe 和N均掺入了TiO₂晶格. 紫外-可见(UV-Vis)漫反射光谱显示Fe和N共掺杂TiO₂纳米管阵列的吸收带边较纯TiO₂纳米管阵列和单一掺杂TiO₂纳米管阵列红移, 可见光吸收增强. 以可见光催化降解罗丹明B(RhB)考察了材料的光催化活性, Fe和N共掺杂TiO₂纳米管阵列对RhB的降解速率较纯TiO₂纳米管阵列和单一掺杂TiO₂纳米管阵列明显提高, 证明了Fe、N共掺杂产生的协同效应提高了TiO₂纳米管阵列在可见光照射下的光催化活性.

关键词: Fe和N, 共掺杂, TiO₂纳米管阵列, 罗丹明B, 可见光

Abstract: Fe-N codoped TiO₂ nanotube arrays were fabricated by anodization of Ti, followed by wet immersion and annealing post-treatment. The doped TiO₂ nanotube array photocatalysts were characterized by field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Auger electron spectroscopy (AES). The results indicated that Fe and N dopants had almost no effect on the morphology and structure of TiO₂ nanotube arrays, and that Fe and N were doped into the TiO₂ lattice. UV-Vis diffuse reflectance spectra showed that the absorption band edge of Fe-N codoped TiO₂ nanotube arrays exhibited a red shift compared with that of pure TiO₂ nanotube arrays and Fe- or N-doped TiO₂ nanotube arrays. The photocatalytic activity of Fe-N codoped TiO₂ nanotube arrays was evaluated by their ability to degrade rhodamine B under visible light irradiation. The degradation rate of rhodamine B over Fe-N codoped TiO₂ nanotube arrays was obviously higher than that over pure TiO₂ nanotube arrays and Fe- or N-doped TiO₂ nanotube arrays, which is attributed to the synergistic effect of the Fe and N codopants.

Key words: Fe and N, Codoping, TiO₂ nanotube array, Rhodamine B, Visible light

吴奇, 苏钰丰, 孙岚, 王梦晔, 王莹莹, 林昌健. Fe、N共掺杂TiO₂纳米管阵列的制备及可见光光催化活性[J]. 物理化学学报, 2012, 28(03), 635-640. doi: 10.3866/PKU.WHXB201112231

WU Qi, SU Yu-Feng, SUN Lan, WANG Meng-Ye, WANG Ying-Ying, LIN Chang-Jian. Preparation and Visible Light Photocatalytic Activity of Fe-N Codoped TiO₂ Nanotube Arrays[J]. Acta Phys. -Chim. Sin. 2012, 28(03), 635-640. doi: 10.3866/PKU.WHXB201112231

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201112231

https://www.whxb.pku.edu.cn/CN/Y2012/V28/I03/635

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Fe、N共掺杂TiO₂纳米管阵列的制备及可见光光催化活性

Preparation and Visible Light Photocatalytic Activity of Fe-N Codoped TiO₂ Nanotube Arrays

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