Design, synthesis and investigations of PdxSn1-x nanoparticle-impregnated NiTiO3 as highly active electrocatalyst for methanol oxidation reaction in alkaline medium
Source abstract
Abstract
This work investigated the improved electrocatalytic performance of PdSn nanoparticle-impregnated NiTiO3 heterostructured nanocomposites. The electrocatalyst PdSn uses NiTiO3 as active support material for methanol oxidation. The PdSn-NiTiO3 was prepared by a microwave-assisted polyol method with four different loadings of Sn with respect to Pd. The NiTiO3 possessed a rhombohedral-structured ilmenite crystalline phase, and the PdSn nanoparticles had the cubic phase. The average particle size of PdSn nanoparticles was 9 nm. The X-ray photoelectron spectroscopy has shown two oxidation states for the cations in NiTiO3, which has left its surface with oxygen vacancies. Electrochemical tests have demonstrated that the PdSn-NiTiO3/C electrocatalyst exhibited good electrocatalytic activity and stability for methanol oxidation in an alkaline medium. Of the four combinations tested, the Pd0.4Sn0.6-NT has performed the best electrocatalytic activity for methanol oxidation due to its high current density and better stability.
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Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Electrochemical Analysis and Applications · Catalytic Processes in Materials Science
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References (46)
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