Enhanced CO photocatalytic oxidation in the presence of humidity by tuning composition of Pd–Pt bimetallic nanoparticles supported on TiO2

Abstract

Here we put forward for the first time that the negative effect of humidity on CO photooxidation at room temperature can be overcome by adjusting the composition of Pd–Pt bimetallic particles supported on TiO₂. Consequently, optimized Pd_xPt_1−x/TiO₂ materials can be considered as common and efficient photocatalysts for simultaneous elimination of CO and VOCs in the presence of humidity, i.e. for real indoor air treatment.