• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Use of poly(3-hydroxybutyrate)/niobium oxyhydroxide nanocomposites in photocatalysis: Effect of preparation methods
【24h】

Use of poly(3-hydroxybutyrate)/niobium oxyhydroxide nanocomposites in photocatalysis: Effect of preparation methods

机译：在光催化中使用聚（3-羟基丁酯）/氧氧化铌纳米复合材料：制备方法的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, nanocomposites were obtained by the dispersion of niobium oxyhydroxide into a poly(3-hydroxybutyrate) (PHB) matrix by different preparative methods. These methods led to changes in the polymer morphology and in their photocatalytic properties. Thermal and structural properties of the nanocomposites were investigated using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FTIR)-attenuated total reflection (ATR). Scanning electron microscopy images were analyzed in order to observe the different morphologies of nanocomposites as well as the distribution of niobium nanoparticles in the PHB matrix. The chemical interactions between the polymer and niobium nanoparticles were observed in the FTIR-ATR and thermal analyses. The results of TGA and DSC indicated an improvement in the thermal stability of the polymer and the action of inorganic nanoparticles as nucleating agents in the process of heterogeneous nucleation of PHB. The composites exhibited good catalytic activity for the removal of methylene blue dye from an aqueous medium (approximate to 90%) during a photocatalytic process. The different morphologies of PHB/niobium oxyhydroxide composites directly influenced the catalytic activity of the material due to the difference in the dispersion of nanoparticles. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45836.
机译：在这项工作中，通过氢氧化正铌的分散成的聚（3-羟基丁酸酯）（PHB）由不同的制备方法矩阵获得纳米复合材料。这些方法导致聚合物形态的变化，并在其光催化性能。使用热重量分析（TGA），差示扫描量热法（DSC）的纳米复合材料的热和结构性能进行了研究，并傅里叶变换红外光谱（FTIR）-attenuated全反射（ATR）。扫描电子显微镜的图像，以观察纳米复合材料的不同的形态以及铌纳米颗粒在基质PHB的分布进行了分析。在FTIR-ATR和热分析中观察到的聚合物和铌纳米颗粒之间的化学相互作用。 TGA和DSC的结果表明该聚合物的热稳定性的提高和无机纳米颗粒的如PHB的异相成核的过程中成核剂的作用。该复合材料中光催化过程表现出从（接近90％）的含水介质中除去亚甲蓝染料的良好的催化活性。 PHB /羟基氧化铌复合材料的不同的形态直接影响所述材料的催化活性由于在纳米粒子的分散体中的差异。 （C）2017年威利期刊公司J.申请聚合物。 SCI。 2018年，135，45836。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号