• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Pacific Rim Meeting on Electrochemical and Solid-State Science >Gold-Palladium Bimetallic Nanoparticles for Inducing Surface Plasmon Resonance to Catalyze Ethanol Oxidation
【24h】

Gold-Palladium Bimetallic Nanoparticles for Inducing Surface Plasmon Resonance to Catalyze Ethanol Oxidation

机译：用于诱导表面等离子体共振以催化乙醇氧化的金 - 钯双金属纳米颗粒

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gold-palladium (Au-Pd) bimetallic nanoparticles were prepared as a series of alloy and core-shell nanostructures to synergistically couple plasmonic (Au) and catalytic (Pd) metals to tailor the optical and catalytic properties. Catalysts utilizing plasmonic metals that exhibit a localized surface plasmon resonance (SPR) can be harnessed for light-driven enhancement via augmented carrier generation/separation and photothermal conversion. Titania-supported Au-Pd bimetallic nanoparticles were used as catalysts to study the ethanol (EtOH) oxidation reaction, with an emphasis towards driving carbon-carbon (C-C) bond cleavage at low temperatures. Plasmonically-assisted photocatalytic oxidation of EtOH to CO_2 under solar simulated-light irradiation was studied by monitoring the yield of gaseous products via suspended particle photocatalysis and electrochemical methods. Results are correlated with Au-Pd composition and homogeneity to maintain SPR-induced charge separation and mitigate the carbon monoxide poisoning effects on Pd. Under solar simulated conditions, carrier generation/separation and photothermal conversion was achieved, resulting in the photogenerated "hot" holes driving the photo-oxidation of EtOH primarily on the AuPd, providing a method to selectively cleave C-C bonds. Bimetallics provide a pathway for driving desired photocatalytic and photoelectrochemical reactions with superior catalytic activity and selectivity.
机译：制备金 - 钯（AU-Pd）双金属纳米颗粒作为一系列合金和核 - 壳纳米结构，以协同耦合耦合的等离子体（Au）和催化（Pd）金属，以定制光学和催化性质。利用具有局部表面等离子体共振（SPR）的等离子体金属的催化剂可以通过增强的载流子产生/分离和光热转换来利用光驱动增强。使用二氧化钛支持的AU-Pd双金属纳米颗粒作为催化剂，以研究乙醇（EtOH）氧化反应，强调在低温下驱动碳 - 碳（C-C）键裂解。通过悬浮粒子光催化和电化学方法监测气态产物的产量和电化学方法，研究了在太阳模拟光照射下的等离子辅助光催化氧化。结果与AU-Pd组合物和均匀性相关，以维持SPR诱导的电荷分离并减轻对Pd的一氧化碳中毒作用。在太阳模拟条件下，实现了载流子生成/分离和光热转化，导致光发射的“热”孔主要在AUPD上驱动EtOH的光氧化，提供一种选择性地切割C-C键的方法。 Bimetallics提供了一种途径，用于驱动所需的光催化和光电化学反应，具有优异的催化活性和选择性。

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