首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >In situ monitoring of catalytic reaction on single nanoporous gold nanowire with tuneable SERS and catalytic activity
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In situ monitoring of catalytic reaction on single nanoporous gold nanowire with tuneable SERS and catalytic activity

机译:用可调谐SERS和催化活性对单纳米孔金纳米线催化反应的原位监测

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摘要

Single nanoporous gold nanowire was introduced as a tunable one-dimensional nano-sensor platform with both SERS and catalytic activity, and it precisely fit the requirement of materials for in situ SERS monitoring of plasmon-assisted catalytic reaction. The nanoporous gold nanowires exhibited much more "hot spots" on their surface and much better SPR effect than the smooth nanowires. We demonstrated that these nanowires could be used as a SERS substrate assuring the sensitivity and reproducibility of Raman signals. Besides, they could be applied as a kind of heterogeneous catalyst for in situ SERS monitoring of the plasmon-assisted catalytic reaction-reduction of p-nitrothiophenol (p-NTP) to p,p-dimercaptoazobenzene (DMAB) at their surface. The SERS and catalytic activity of the nanowires could be respectively optimized by adjusting their dealloying time, similar to the procedure of catalyst screening.
机译:用SERS和催化活性引入单个纳米孔金纳米线作为可调谐的一维纳米传感器平台,并且精确地符合原位SERS对等离子体辅助催化反应的监测材料的要求。 纳米孔金纳米线在其表面上表现出更多的“热点”,比光滑的纳米线更好的SPR效果。 我们证明这些纳米线可以用作SERS基板,确保拉曼信号的灵敏度和再现性。 此外,它们可以应用于一种异质催化剂,用于原位SERs在其表面上监测p-硝基酚(P-NTP)至P,P-二巯基唑嗪(DMAB)的催化反应还原。 纳米线的SER和催化活性可以通过调节其易用时间来分别优化,类似于催化剂筛选的方法。

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