Surface modification of zinc oxide nanorods for potential applications in organic materials
Surface modification of zinc oxide nanorods for potential applications in organic materials
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DOI：
10.1016/j.apsusc.2011.09.128
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发表时间：
2011-12
影响因子：
6.7
通讯作者：
Lei Zhang;M. Zhong;H. Ge
中科院分区：
文献类型：
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作者：
Lei Zhang;M. Zhong;H. Ge
通过在三颈烧瓶中回流前驱体，发展了一种简单易行的方法，将氧化锌纳米棒的表面性质从亲水转变为疏水。与本文讨论的其他改性剂相比，NDZ-311W钛酸酯偶联剂被选为最佳改性剂，不仅因为它具有良好的亲油性，而且它的多官能团在与有机材料的进一步复合中起到关键作用。并用透射电子显微镜、X射线衍射仪和傅立叶变换红外光谱仪对表面改性前后的表面形貌、结构和结合方式进行了表征。透射电子显微镜分析表明，改性后的氧化锌纳米棒表面覆盖了一层薄层，可以认为是NDZ-311W钛酸酯偶联剂。通过X-射线衍射仪的结构分析发现，表面改性并没有显著改变其晶体结构。此外，FT-IR测试表明，NDZ-311W钛酸酯偶联剂是以共价键合方式键合在氧化锌纳米棒表面的，而不是物理封端。从更实际的角度来说，NDZ-311W钛酸酯偶联剂改性的氧化锌纳米棒在有机材料中的潜在应用比未改性的要大得多。
A facile and simple modification method towards changing surface property of ZnO nanorods from a hydrophilic one to a hydrophobic one have been developed by refluxing precursor in three-necked flask. Comparing with the other modifiers discussed in the paper, NDZ-311w titanate coupling agent was selected as the best one not only because of the good lipophilic modification effect, but also for its multifunctional groups could play a crucial part in further composite with organic materials. Moreover, transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), respectively, were used to evaluate the morphology, structure and combinative way before and after surface modification. The TEM result showed, after modifying process, there was a thin layer capping on the surface of ZnO nanorods which could be considered as NDZ-311w titanate coupling agent. Through the structure analysis by XRD, it was found that the surface modification had not substantially altered crystalline structure. Besides, the FT-IR test proved that NDZ-311w titanate coupling agent was rather covalently bonded to the surface of ZnO nanorods than physically capping. More practically speaking, the NDZ-311w titanate coupling agent modified ZnO nanorods have much more potential applications in organic materials than unmodified ones.