...
  • 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 >Fabrication of Co@SiO2@C/Ni submicrorattles as highly efficient catalysts for 4-nitrophenol reduction
【24h】

Fabrication of Co@SiO2@C/Ni submicrorattles as highly efficient catalysts for 4-nitrophenol reduction

机译：CO @ SiO2 @ C / Ni亚麻制的制备作为4-硝基苯酚还原的高效催化剂

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

In this paper, an extended Stober method has been developed to fabricate a Ni2+-polydopamine (PDA) complex coated on Co-3[Co(CN)(6)](2)@SiO2 composites. After one-step carbonization involving the heat treatment of a Prussian blue analogue (PBA) of Co-3[Co(CN)(6)](2) cores and the PDA-Ni2+ shell under a nitrogen atmosphere, homogeneous Co@SiO2@C/Ni submicrorattles were synthesized. Notably, the silica interlayer played a vital role in the formation of such Co@SiO2@C/Ni submicrorattle structures. Without the protection of SiO2, Co-Ni@C composites were obtained instead and aggregated seriously due to sintering at high temperature. While with the silica layer as the spacer, the obtained Co@SiO2@C/Ni composites were not only well dispersed in the solution, but could also be adjusted in terms of the size and density of Ni nanoparticles (NPs) on the surface. Moreover, the size of core Co and surficial Ni NPs can be facilely modulated via changing the calcination temperature, which can effectively control the catalytic performance of the as-prepared nanocomposites. The as-prepared Co@SiO2@C/Ni submicrorattles were employed as the reaction catalyst for the reduction of 4-nitrophenol (4-NP), and exhibit both superior catalytic activity and cycling stability to Co@SiO2 and Co-Ni@C composites.
机译：在本文中，已经开发了一种延长的抗氧化镁方法以制造涂覆在CO-3上的Ni2 + -Polydamine（PDA）复合物（6）（6）]（2）/ 2/4 / 2）复合材料。在一步碳化后，涉及CO-3 [CO（CN）（6）]（2）芯和氮气氛下的PDA-Ni2 +壳体的普鲁士蓝色类似物（PBA）的热处理，同质CO @ SiO2 @ C / NI亚型潜艇被合成。值得注意的是，二氧化硅中间层在这种CO @ C / Ni亚型血管结构的形成中起着至关重要的作用。在不保护SiO2的情况下，代替Co-Ni @ C复合材料并根据烧结在高温下严重地聚集。在用二氧化硅层作为间隔物的同时，所得的CO @ SiO 2 @ C / Ni复合材料不仅可以很好地分散在溶液中，但也可以根据表面上Ni纳米颗粒（NPS）的尺寸和密度来调节。此外，可以通过改变煅烧温度来施加核心CO和曲面Ni NP的尺寸，这可以有效地控制所制备的纳米复合材料的催化性能。用作4-硝基苯酚（4-NP）的反应催化剂用作反应催化剂，表现出优异的催化活性和循环稳定性为CO @ SiO2和Co-Ni @ C的反应催化剂复合材料。

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