• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Cucurbit[7]uril-stabilized gold nanoparticles as catalysts of the nitro compound reduction reaction
【24h】

Cucurbit[7]uril-stabilized gold nanoparticles as catalysts of the nitro compound reduction reaction

机译：葫芦[7] URIL稳定的金纳米颗粒作为硝基化合物还原反应的催化剂

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

The catalytic performance of cucurbit[7]uril-protected gold nanoparticles is reported for the first time for the reductive degradation of the banned but still used antibacterial compound nitrofurantoin. The cucurbit[7]uril-protected gold nanoparticles were produced by Au(III) reduction by sodium borohydride and subsequent addition of cucurbit[7]uril as a ligand. Working in this way, 5.7 nm gold nanoparticles were obtained and characterised by spectrophotometric and high-resolution transmission electron microscopic techniques. For a 1 : 100 nitro compound : sodium borohydride molar ratio, a normalised pseudo-first order apparent constant of 0.27 L s(-1) m(-2) at 25 degrees C and an activation energy of 34 kJ mol(-1) were obtained. For comparative purposes, the reduction reaction of the pollutant 4-nitrophenol was also studied and an apparent kinetic constant of 0.12 L s(-1) m(-2) at 25 degrees C and an activation energy of 68 kJ mol-1 were obtained, data that, when compared with recently reported work, demonstrates that these nanoparticles are an efficient catalyst.
机译：葫芦保护的尿素保护金纳米颗粒的催化性能首次报告用于禁用但仍然使用的抗菌化合物含有含有含氮素的还原但仍然使用的抗菌化合物。将葫芦保护的金纳米颗粒通过硼氢化钠还原并随后加入葫芦作为配体的葫芦加入。以这种方式工作，获得5.7nm的金纳米颗粒并通过分光光度法和高分辨率透射电子显微镜技术表征。对于1：100硝基化合物：硼氢化钠摩尔比，在25摄氏度下为0.27Ls（-1）m（-2）的归一化伪第一阶常数，并为34kJ摩尔（-1）的活化能获得了。对于比较目的，还研究了污染物4-硝基苯酚的还原反应，并且在25℃下的表观动力量为0.12Ls（-1）m（-2），并获得68kJ-1的活化能量，与最近报道的工作相比，数据表明这些纳米颗粒是有效的催化剂。

著录项

  • 来源
    《RSC Advances》 |2016年第89期|共7页
  • 作者

    Blanco E.; Esteve-Adell I.; Atienzar P.; Casas J. A.; Hernandez P.; Quintana C.;

  • 作者单位

    Univ Autonoma Madrid Dept Quim Analit &

    Anal Instrumental E-28049 Madrid Spain;

    Univ Politecn Valencia Dept Quim CSIC UPV Inst Univ Tecnol Quim E-46022 Valencia Spain;

    Univ Politecn Valencia Dept Quim CSIC UPV Inst Univ Tecnol Quim E-46022 Valencia Spain;

    Univ Autonoma Madrid Dept Quim Fis Aplicada E-28049 Madrid Spain;

    Univ Autonoma Madrid Dept Quim Analit &

    Anal Instrumental E-28049 Madrid Spain;

    Univ Autonoma Madrid Dept Quim Analit &

    Anal Instrumental E-28049 Madrid Spain;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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