In situ L-hydroxyproline functionalization and enhanced photocatalytic activity of TiO2 nanorods

In situ L-hydroxyproline functionalization and enhanced photocatalytic activity of TiO2 nanorods
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TiO2 纳米棒的原位 L-羟基脯氨酸功能化和增强的光催化活性

DOI:
10.1021/jp803002g
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发表时间:
2008-07
影响因子:
3.7
通讯作者:
Zhang, Hailu
Zhang, Hailu
中科院分区:
化学3区
文献类型:
--
作者:
Xiao, Wen-Jing;Deng, Feng;Jia, Huimin;Zhang, Lizhi;Zheng, Zhi;Zhang, Hailu

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在这项研究中,L-羟脯氨酸功能化的TiO 2纳米棒制备的非水溶胶-凝胶路线在80 ℃。采用XRD、TEM、HRTEM、XPS、N2吸附、紫外-可见漫反射光谱等手段对样品进行了表征。通过FT-IR和C-13 NMR分析证实了L-羟脯氨酸在TiO 2表面的存在。结果表明,L-羟脯氨酸的功能化可以显著提高TiO 2在模拟太阳光下降解罗丹明B的光催化活性。在表征的基础上,分析了光催化活性提高的原因。该研究为提高TiO 2光催化活性提供了一种新的功能化方法。同时,L-羟脯氨酸对TiO 2的修饰有望在有机催化、食品、化妆品等领域获得新的应用。
In this study, L-hydroxyproline-functionalized anatase TiO2 nanorods were prepared by a nonaqueous sol-gel route at 80 degrees C. The resulting samples were characterized by XRD, TEM, HRTEM, XPS, nitrogen adsorption, and UV-vis diffuse reflectance spectroscopy. The presence Of L-hydroxyproline on the TiO2 surface was confirmed by the analysis of FT-IR and C-13 NMR. It was found that the functionalization Of L-hydroxyproline could significantly enhance the photocatalytic activity of TiO2 on the degradation of rhodamine B in aqueous solution under simulated solar light. The reasons for photocatalytic activity enhancement were analyzed on the basis of characterizations. This study provides an alternative functionalization method to improve the photocatalytic activity of TiO2. Meanwhile, the modification of L-hydroxyproline on TiO2 is expected to find new applications in fields of organic catalysis, foodstuffs, cosmetics, and so on.
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