...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemical engineering journal >Au nanoparticles decorated Kapok fiber by a facile noncovalent approach for efficient catalytic decoloration of Congo Red and hydrogen production
【24h】

Au nanoparticles decorated Kapok fiber by a facile noncovalent approach for efficient catalytic decoloration of Congo Red and hydrogen production

机译：金纳米粒子通过一种简便的非共价方法装饰了木棉纤维，以有效催化刚果红脱色和制氢

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

A facile and eco-friendly noncovalent self-assembly approach was employed to immobilize Au nanoparticles (AuNPs) onto a natural tubular Kapok fiber (KF) and used for the catalytic reducing decoloration of Congo Red (CR) dye and simultaneous hydrogen production. AuNPs fail to be directly attached on KF or carboxylated KF (CKF), but the introduction of chitosan (CTS) as a "bridge" led to the stable immobilization of AuNPs on KF or CKF with a well-dispersed distribution, as shown by UV-vis, XRD, SEM and TEM analyses. The resultant KF (or CKF)/CTS/AuNPs nanocomposites show excellent catalytic activity and stability for the catalytic reducing decoloration of CR dye, and the color of CR solution can be rapidly faded within 3 min at the low catalyst dosage of 0.3 g/L. The catalytic activity of the nanocomposite can be maintained after being treated with sonication or 1 mol/L acid for 20 min. Along with the catalytic decoloration of CR, hydrogen was simultaneously produced and can be collected as a clean green fuel, and the maximum yield of hydrogen reaches 430 mL/L (CR solution, 20 mg/L). Thus, the nanocomposite can be used as a catalyst to decolor dye wastewater and produce hydrogen by one-step process. Moreover, the reported strategy follows the sustainable development idea of "from nature, for nature, into the nature" and promotes the use of naturally renewable resources to produce promising and eco-friendly functional materials for various applications.
机译：采用一种简便且环保的非共价自组装方法将Au纳米颗粒（AuNPs）固定在天然管状Kapok纤维（KF）上，并用于催化还原刚果红（CR）染料的脱色并同时制氢。 AuNPs不能直接附着在KF或羧化KF（CKF）上，但是壳聚糖（CTS）作为“桥”的引入导致AuNPs稳定地固定在KF或CKF上，具有良好分散的分布，如UV所示。 -vis，XRD，SEM和TEM分析。所得的KF（或CKF）/ CTS / AuNPs纳米复合材料显示出优异的催化活性和对CR染料的催化还原脱色的稳定性，在0.3 g / L的低催化剂用量下，CR溶液的颜色可在3分钟内迅速褪色。超声处理或1 mol / L酸处理20分钟后，纳米复合材料的催化活性得以保持。随着CR的催化脱色，同时产生了氢气，可以将其收集为清洁的绿色燃料，并且氢气的最大产量达到430 mL / L（CR溶液为20 mg / L）。因此，该纳米复合材料可用作一步法使染料废水脱色并产生氢的催化剂。此外，所报告的战略遵循“从大自然，为自然，到大自然”的可持续发展理念，并促进利用天然可再生资源生产有前途且环保的功能材料，以用于各种用途。

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