Electrocatalytic Oxidation of Formic Acid and Methanol on Pt Deposits on Au(111)

Citations Over TimeTop 10% of 2007 papers

Abstract

This work presents characteristics of Pt deposits on Au(111) obtained by the use of spontaneous deposition and investigated by electrochemical scanning tunneling microscopy (EC-STM). On such prepared and STM characterized Au(111)/Pt surfaces, we studied electrocatalytic oxidation of formic acid and methanol. We show that the first monatomic layer of Pt displays a (square root 3 x square root 3)R30 degrees surface structure, while the second layer is (1 x 1). After prolonged deposition, multilayer Pt deposits are formed selectively on Au(111) surface steps and are 1-20 nm wide and one to five layers thick. On the optimized Au(111)/Pt surface, formic acid oxidation rates are enhanced by a factor of 20 compared to those of pure Pt(111). The (square root 3 x square root 3)R30 degrees-Pt yields very low methanol oxidation rates, but the rates increase significantly with further Pt growth.

Related Papers

• → Catalytic conversion of formic acid to methanol with Cu and Al under hydrothermal conditions(2012)13 cited
• → Methanol Production By Reduction Of Formic Acid Over Cu Catalyst Under Hydrothermal Conditions(2010)3 cited
• → Study of Catalytic Reduction of Formic Acid to Methanol under Mild Hydrothermal Conditions(2011)1 cited
• Formic Acid as Methanol-alternative Fuel in Direct Methanol Fuel Cell(2005)
• → Methanol as the Modifier of Nanostructured Pt Films for Enhenced Electrocatalytic Methanol Oxidation Reaction Electrocatalysis(2018)