...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Philosophical transactions of the Royal Society. Mathematical, physical, and engineering sciences >Green solvent for green materials: a supercritical hydrothermal method and shape-controlled synthesis of Cr-doped CeO2 nanoparticles
【24h】

Green solvent for green materials: a supercritical hydrothermal method and shape-controlled synthesis of Cr-doped CeO2 nanoparticles

机译：绿色材料的绿色溶剂：超临界水热法和形状控制的Cr掺杂CeO2纳米粒子的合成

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

This paper describes a supercritical hydrothermal synthesis method as a green solvent process, along with products based on this method that can be used as green materials that contribute to solving environmental problems. The first part of this paper summarizes the basics of this method, including the mechanism of the reactions, specific features of the supercritical state for nanoparticle synthesis, the continuous flow-type reactor and applications; this provides a better understanding of the suitability of this method to synthesize green materials. The second part of the paper describes the method used to synthesize Cr-doped CeO2 nanoparticles, which show an extremely high oxygen storage capacity, suggesting their high potential as an environmental catalyst. Transmission electron microscopy and scanning electron microscope images showed octahedral Cr-doped CeO2 nanoparticles with sizes of 15-30 nm and cubic Cr-doped CeO2 nanoparticles with sizes of 5-8 nm. Octahedral Cr-doped CeO2 nanoparticles exposing (111) facets and cubic Cr-doped CeO2 nanoparticles exposing (100) facets were determined by high-resolution transmission electron microscopy and selected area electron diffraction. The X-ray diffraction peaks shifted to a high angle because the radius of the Cr ion is smaller than that of the Ce ion.
机译：本文将超临界水热合成方法描述为一种绿色溶剂工艺，并介绍了基于该方法的产品可用作绿色材料，这些材料有助于解决环境问题。本文的第一部分概述了该方法的基础，包括反应的机理，用于纳米颗粒合成的超临界态的特定特征，连续流式反应器及其应用。这样可以更好地理解此方法是否适合合成绿色材料。本文的第二部分描述了用于合成Cr掺杂的CeO2纳米颗粒的方法，该方法显示出极高的储氧能力，表明它们具有作为环境催化剂的巨大潜力。透射电子显微镜和扫描电子显微镜图像显示尺寸为15-30nm的八面体Cr掺杂的CeO 2纳米颗粒和尺寸为5-8nm的立方Cr掺杂的CeO 2纳米颗粒。通过高分辨率透射电子显微镜和选定区域电子衍射确定暴露八面体Cr掺杂的CeO2纳米颗粒（111）的小面和立方掺杂Cr的CeO2纳米颗粒暴露（100）的小面。由于Cr离子的半径小于Ce离子的半径，因此X射线衍射峰向高角度移动。

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