High Efficiency Photoelectrocatalytic Methanol Oxidation on CdS Quantum Dots Sensitized Pt Electrode

ACS Applied Materials & Interfaces
Chunyang ZhaiYukou Du

Abstract

A cadmium sulfide quantum dots sensitized Pt (Pt-CdS) composite was synthesized using a solvothermal method and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy. The catalytic properties of the as-prepared electrode for methanol oxidation were evaluated by cyclic voltammetry (CV), chronoamperometry, electrochemical impedance spectrum (EIS) and photocurrent responses. The as-prepared Pt-CdS electrode displayed a significant enhancement in the electrocatalytic activity and stability for methanol oxidation in the presence of visible light irradiation. The synergistic effect of both the electro- and photocatalytic reaction contributes to this enhanced catalytic performance. Our result suggests a new paradigm to construct photoelectrocatalysts with high performance and good stability for direct methanol fuel cells with the assistance of visible-light illumination.

References

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Jul 21, 2010·Nanoscale·Tianyou ZhaiDmitri Golberg
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Mar 20, 2014·ACS Applied Materials & Interfaces·Nazrul MojumderVaidyanathan Ravi Subramanian

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Citations

Jul 9, 2016·ACS Applied Materials & Interfaces·B Jurado-SánchezA Escarpa
Apr 21, 2017·ACS Applied Materials & Interfaces·Sumanta SarkarSebastian C Peter
Aug 25, 2017·ACS Applied Materials & Interfaces·Zhichao SunTetsuro Majima

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