首页> 外文期刊>RSC Advances >On the morphology of MoS2 slabs on MoS2/Al2O3 catalysts: the influence of Mo loading
【24h】

On the morphology of MoS2 slabs on MoS2/Al2O3 catalysts: the influence of Mo loading

机译:MoS2 / Al2O3催化剂上MoS2平板的形态:Mo负载的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Two-dimensional MoS2 is an important material with diverse catalytic applications. The edge sites exposed by MoS2 are of great importance to its catalytic performance since the catalytic reactions generally occur on the edge sites rather than on the basal planes. In this work, low temperature (100 K) CO adsorption followed by IR spectroscopy (IR/CO) was used to in situ probe the edge sites of the MoS2 phase on MoS2/Al2O3 catalysts. It is found that the morphology of the MoS2 phase on an Al2O3 support is a truncated triangle exposing mainly Mo-terminated edges (M-edge). However, the proportion of sulfur-terminated edges (S-edge) increases with increasing the Mo loading, resulting in a more heavily truncated triangle morphology of MoS2. The change of MoS2 morphology with Mo loading can be explained by the modification of MoS2-Al2O3 interactions, indicating the importance of phase-support interactions in supported MoS2 catalysts.
机译:二维MoS2是具有多种催化应用的重要材料。 MoS 2暴露的边缘部位对其催化性能非常重要,因为催化反应通常发生在边缘部位而不是在基面上。在这项工作中,使用低温(100 K)CO吸附,然后进行IR光谱(IR / CO)来原位探测MoS2 / Al2O3催化剂上MoS2相的边缘部位。发现在Al 2 O 3载体上的MoS 2相的形态是截短的三角形,主要暴露了以Mo为末端的边缘(M-edge)。但是,硫封端的边缘(S边缘)的比例随着Mo含量的增加而增加,从而导致MoS2的三角形形状更加截断。 MoS2形态随Mo负载的变化可以通过MoS2-Al2O3相互作用的修饰来解释,表明在负载型MoS2催化剂中相-载体相互作用的重要性。

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