School of Materials Science and Engineering, Zhengzhou University, 75 Daxue Road, Zhengzhou 450052, PR China.
Nanoscale. 2013 Sep 7;5(17):7913-9. doi: 10.1039/c3nr00010a.
Herein, we report the preparation of poly (cyclotriphosphazene-co-4,4'-sulfonyldiphenol) (PZS) nanotubes decorated with Ag nanoparticles (NPs). The PZS nanotubes have been synthesized firstly via an in situ template approach, and then Ag nanoparticles were prepared via in situ reduction of AgNO3 with NaBH4 as the reductant, supported on the surface of the PZS nanotubes. The as-obtained PZS nanotubes and PZS@Ag NPs composites were characterized by means of Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) equipped with energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), thermogravimetric analysis (TGA), and UV-vis spectroscopy. Characterization results showed that Ag NPs with good dispersibility were well anchored onto the surface of the PZS nanotubes with superior thermal stability. In addition, the catalytic activities and reusability of these composites were investigated by employing the reduction of 4-nitrophenol (4-NP) into 4-aminophenol (4-AP) by NaBH4 as a model reaction.
本文报道了聚（环三磷腈-共-4,4'-磺酰二苯酚）（PZS）纳米管负载 Ag 纳米颗粒（NPs）的制备。首先通过原位模板法合成 PZS 纳米管，然后以 NaBH4 为还原剂，原位还原 AgNO3，在 PZS 纳米管表面负载 Ag NPs。通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、能量色散 X 射线光谱（EDS）、X 射线衍射（XRD）、原子吸收光谱（AAS）、热重分析（TGA）和紫外可见光谱对所得到的 PZS 纳米管和 PZS@Ag NPs 复合材料进行了表征。表征结果表明，Ag NPs 具有良好的分散性，很好地锚定在 PZS 纳米管表面，具有优异的热稳定性。此外，还通过 NaBH4 将 4-硝基苯酚（4-NP）还原为 4-氨基酚（4-AP）的模型反应，考察了这些复合材料的催化活性和可重复使用性。
