...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Formation of self-inhibiting copper(II) nanoparticles in an autocatalytic Fenton-like reaction
【24h】

Formation of self-inhibiting copper(II) nanoparticles in an autocatalytic Fenton-like reaction

机译：自抑制类Fenton反应中形成自抑制铜（II）纳米粒子

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

Cu(II)-catalysed decomposition of hydrogen peroxide at alkaline pH in the presence of etidronic acid (HEDP) showed a sigmoid kinetic profile typical of autocatalytic reactions. However, the reaction abruptly stopped well before all hydrogen peroxide had decomposed, and further addition of Cu(II) and HEDP did not restart the reaction. Results of a mechanistic study suggest that the reaction involves the formation of an active catalyst which decomposes hydrogen peroxide and oxidizes HEDP. Once all HEDP has been consumed, the active complex triggers Cu(II) aggregation to form remarkably stable but catalytically inactive nanoparticles. The nanoparticles were found to be basic Cu(II) phosphate/carbonate. They exhibit self-poisoning behaviour in the hydrogen peroxide decomposition and undergo seed-mediated growth upon addition of further Cu(II).
机译：在乙二膦酸（HEDP）的存在下，Cu（II）催化在碱性pH下过氧化氢的分解显示出S型动力学特征，这是自催化反应的典型特征。然而，在所有过氧化氢分解之前，反应突然停止，并且进一步添加Cu（II）和HEDP并没有重新开始反应。机理研究的结果表明该反应涉及活性催化剂的形成，该活性催化剂分解过氧化氢并氧化HEDP。一旦所有的HEDP被消耗掉，活性复合物就会触发Cu（II）聚集，形成非常稳定但无催化活性的纳米颗粒。发现纳米颗粒为碱性磷酸铜（II）/碳酸盐。它们在过氧化氢分解中表现出自中毒行为，并在添加其他Cu（II）后经历种子介导的生长。

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