Fig. 1: Characterisation of Pt/SiO2 catalyst and TAP CO oxidation experiments.
From: Interrogating site dependent kinetics over SiO2-supported Pt nanoparticles
a, b Representative TEM images with particle size distribution (inset) of (a) fresh and (b) spent Pt/SiO2 catalyst after all of the TAP experiments. c Argon normalised exit flux curves of m/z = 28 (CO), 32 (O2), and 44 (CO2) at (i) 25 and (ii) 350 °C for a pulse set of 6.6% CO 13.4% O2 gas mixture in an inert Ar tracer over CO*-covered Pt/SiO2 catalyst. d Temperature-dependent integrated exit flux of m/z = 44 (CO2) normalised via Ar on (i) pristine and (ii) CO-covered Pt/SiO2 catalyst for CO oxidation while heating from 25–350–25 °C at a heating rate of 8 °C/min.
