...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >Engineering of highly active Au/Pd supported on hydrogenated urchin-like yolk@shell TiO2 for visible light photocatalytic Suzuki coupling
【24h】

Engineering of highly active Au/Pd supported on hydrogenated urchin-like yolk@shell TiO2 for visible light photocatalytic Suzuki coupling

机译：工程的高度活跃的Au / Pd支持氢化urchin-like yolk@shell二氧化钛可见光的光催化铃木耦合

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

Efficient smart photocatalysts and their surface engineering are necessary for the effective conversion of light energy into chemical energy in photocatalyzed organic reactions. Herein, we designed a hydrogenated urchin-like yolk@shell TiO2 structure decorated with Au and Pd nanoparticles (HUY@S-TOH@AuPd) as a robust photocatalyst for C-C coupling reactions. The resulting architecture exhibits considerable photocatalytic performance in Suzuki coupling reactions under visible light irradiation with a turnover frequency (TOF) value as high as 7095 h(-1). The beauty of this engineered structure lies on the following four points: (I) the urchin-like structure provided a large accessible surface area for high light harvesting as well as high noble metal anchoring; (II) the yolk@shell mesoporous architecture improved the absorption of light by multiple scattering; (III) the presence of Ti3+ species on the surface of TiO2 decreased the band gap of the structure to the visible region; (IV) the enriched electron density of Pd through the injection of hot electrons from Au as well as the flow of electrons from the titanium dioxide semiconductor to the metals accelerated the rate-determining step. The merging of bimetallic plasmonic nanoparticles and urchin like yolk-shell hydrogenated titanium dioxide architecture can open an avenue for designing photocatalysts with high stability and promising activity as well as high direct harvesting of visible light for a broad range of photocatalytic organic reactions.
机译：高效的智能催化剂和表面有效的工程是必要的光能转化为化学能在photocatalyzed有机反应。设计了一种氢化urchin-like yolk@shell二氧化钛结构装饰着非盟和Pd纳米颗粒(HUY@S-TOH@AuPd)作为健壮光催化剂对碳碳偶联反应。产生的建筑表现出非常大的光催化性能在铃木耦合可见光照射下的反应周转频率(TOF)值高达7095h(1)。位于以下四点:(I)urchin-like结构提供了一个大的访问表面积高收获以及光高贵金属锚定;介孔结构改善了吸收通过多次散射的光;Ti3 +物种存在表面的二氧化钛降低结构的带隙可见区域;通过注入热Pd的密度电子从非盟以及流动电子从半导体二氧化钛金属加速速率决定的一步。纳米颗粒,像yolk-shell海胆氢化二氧化钛体系结构打开一个大道设计论文以及高稳定性,并承诺活动高直接收获的可见光广泛的光催化有机反应。

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