Performance of partial oxidation of DME to hydrogen under photothermal catalysis over Pt/TiO2–CeO2

Abstract

The efficient conversion of hydrogen-rich dimethyl ether (DME) under milder conditions to produce clean hydrogen will help alleviate the energy crisis. Pt/TiO₂–CeO₂ catalysts with varying Ti/Ce ratios were synthesized to adjust the oxygen vacancy (O_v) concentration, and a systematic study of a photothermal catalysis system for partial oxidation of DME to hydrogen has been conducted. Pt/TiO₂–CeO₂ with a smaller band gap energy (E_bg) and higher O_v concentration (Ti/Ce = 1) demonstrated superior catalytic performance. This work introduces a novel paradigm for the design of photothermal catalysts capable of efficiently activating C–H bonds under milder conditions.