Mesoporous PtSnO2/C Catalyst with Enhanced Catalytic Activity for Ethanol Electro-oxidation

Abstract

In this paper, we report the synthesis, characterization, and electrochemical evaluation of a mesoporous PtSnO 2 /C catalyst, called PtSnO 2 (M)/C, with a nominal Pt : Sn ratio of 3 : 1. Brunauer-Emmett-Teller and transmission electron microscopy characterizations showed the obvious mesoporous structure of SnO 2 in PtSnO 2 (M)/C catalyst. X-ray photoelectron spectroscopy analysis exhibited the interaction between Pt and mesoporous SnO 2 . Compared with Pt/C and commercial PtSnO 2 /C catalysts, PtSnO 2 (M)/C catalyst has a lower active site, but higher catalytic activity for ethanol electro-oxidation reaction (EOR). The enhanced activity could be attributed to Pt nanoparticles deposited on mesoporous SnO 2 that could decrease the amount of poisonous intermediates produced during EOR by the interaction between Pt and mesoporous SnO 2 .

Design and fabrication of effective gradient temperature sensor array based on bilayer SnO2/Pt for gas classification

“…Optical microscopy photos of the fabricated sensor array are shown in Figure 3 ) [32]. The decoration with metallic Pt on the surface of the SnO2 thin film is very important for enhancing the gas sensing properties, for example toward hydrogen [33].…”

An In Situ Quick X‐ray Absorption Spectroscopy Study on Pt3Sn/Graphene Catalyst for Ethanol Oxidation Reaction

“…Hidayati and co‐workers showed that the electro‐oxidation of ethanol and CO was improved by the modification of Pt with Sn and SnNi; Sn oxides provided oxygenated species at smaller potentials than pure Pt [20] . Moreover, the mesoporous structure of SnO 2 was exhibited to enhance electrocatalytic activity toward EOR [21] . SnO 2 in Pt−Sn electrocatalysts thus plays an important role to enhance the EOR activity.…”

“…[20] Moreover, the mesoporous structure of SnO 2 was exhibited to enhance electrocatalytic activity toward EOR. [21] SnO 2 in PtÀ Sn electrocatalysts thus plays an important role to enhance the EOR activity.…”