Electrochemical Ce(III)/Ce(IV) interconversion, electrodeposition, and catalytic CO ↔ CO2 interconversion over terpyridine-modified indium tin oxide electrodes

다국어 초록 (Multilingual Abstract)

Indium tin oxide (ITO) has extensively used as an electrode in diverse application areas of electrochemistry,displays, photovoltaics, and catalysts. Herein, terpyridine-modified ITO and thioterpyridinefunctionalizedAu-modified ITO electrodes were prepared and evaluated for electrochemical redoxbehaviors and conversion rates of Ce(III)/Ce(IV) ions, and recycling recovery rates on the newly developedelectrode by cyclic voltammetry and amperometry. Scanning electron microscopy, X-ray photoelectronspectroscopy, Ultraviolet photoelectron spectroscopy, X-ray diffraction crystallography, and fluorescencespectroscopy were employed for the physiochemical properties of the demonstrated electrodes beforeand after electrochemistry. The interfacial energy level was examined by ultraviolet photoelectron spectroscopyfor ITO-Au and ITO-Au-STpy. Density functional theory calculations were performed to examinecomplexation between the functionalized ligand and Ce(III)/Ce(IV) ions by obtaining molecular orbitalenergy levels and thermodynamics. Thermal CO oxidation catalytic activity was tested for CeelectrodepositedITO electrode. In addition, electrochemical CO2 reduction performance was evaluatedfor Au-modified ITO electrode with and without thioterpyridine-functionalization.

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