研究目的
To present an approach to fabricate nanostructured gold amalgam (AuxHgy) via a single-step co-deposition method and study the kinetics of the electrochemoluminescence reaction.
研究成果
The developed co-deposition technique of AuxHgy resulted in electrodes with a branched microstructure, significantly increasing the electroactive surface area. The ECL study provided insights into the reaction kinetics, demonstrating the potential for ultrasensitive detection of materials such as DNA and proteins.
研究不足
The study was limited by the detection capabilities of the equipment used, particularly in observing the ECL from a single microelectrode. The volatility of DBAE at low concentrations also affected measurement accuracy.
1：Experimental Design and Method Selection:
The study involved the fabrication of nanostructured gold amalgam microelectrodes through selective co-deposition and subsequent electrochemical dealloying. The electrochemiluminescence (ECL) reaction kinetics were studied using the Ru(bpy)3 2+ based system.
2：Sample Selection and Data Sources:
The samples were prepared using Si wafers with a diameter of ≈ 100 mm, and the ECL experiments were conducted in both a conventional three-electrode system and a micro-electrochemical cell.
3：List of Experimental Equipment and Materials:
Potentiostat, SEM imaging, energy-dispersive spectroscopy (EDS) system, photomultiplier tube (PMT), and optical microscope were used.
4：Experimental Procedures and Operational Workflow:
The AuxHgy alloy was deposited using the electroplating method, followed by dealloying through cycling voltammetry. ECL experiments were performed to study the reaction kinetics.
5：Data Analysis Methods:
The electrochemically active area was calculated using the Randles-Sevcik method, and the ECL signal was analyzed to understand the reaction kinetics.
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