• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanoscale >Enhanced catalytic activity for CO oxidation by the metal-oxide perimeter of TiO2/nanostructured Au inverse catalysts
【24h】

Enhanced catalytic activity for CO oxidation by the metal-oxide perimeter of TiO2/nanostructured Au inverse catalysts

机译：增强对CO氧化催化活性二氧化钛/纳米金属氧化物周长非盟逆催化剂

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

We report the effect of metal-oxide interfaces on CO oxidation catalytic activity with inverse TiO2-nano-structured Au catalysts. The inverse nanocatalysts were prepared by depositing TiO2 via the liquid-phase immersion method on electrochemically synthesized Au nanostructure supports. The catalytic performance for CO oxidation was investigated using various amounts of Ti (i.e. 0.1-1.0 wt%) on two different morphologies of Au nanostructures (i.e. nanoporous and nanorod). In comparing the different Au morphologies, we found an overall higher TOF and lower activation energy for the TiO2/nanoporous Au than those for the TiO2/nanorod Au. In addition, the CO oxidation activity increased as the Ti content increased up to 0.5 wt% probably due to active TiO2-Au interface sites enhancing CO oxidation via the supply of adsorption sites or charge transfer from TiO2 to Au. However, a higher titania content (i.e. 1.0 wt% TiO2) resulted in decreased activity caused by high surface coverage of TiO2 decreasing the number of TiO2 Au interface sites. These results implied that the perimeter area of the metal-oxide interface played a significant role in determining the catalytic performance for CO oxidation.
机译：我们报告的影响金属氧化物界面与逆CO氧化催化活性TiO2-nano-structured盟催化剂。nanocatalysts被沉积二氧化钛的准备通过液相浸渍法电化学合成金纳米结构支持。使用各种量氧化进行了研究Ti(即0.1 - -1.0 wt %)在两个不同的Au纳米结构(即形态。纳米多孔和奈米棒)。非盟形态不同,我们发现一个整体TOF和较低的活化能较高二氧化钛/比的纳米多孔金二氧化钛/奈米棒盟。活动增加随着钛含量的增加0.5 wt % TiO2-Au可能活跃界面增强CO氧化通过网站吸附供应网站或电荷转移二氧化钛盟。内容(即1.0 wt %二氧化钛)导致下降活动引起的高表面二氧化钛的报道降低二氧化钛盟接口网站的数量。这些结果暗示的周边地区发挥了重要的金属氧化物界面角色在决定催化性能CO氧化。

著录项

相似文献

  • 外文文献
  • 中文文献
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