Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июнь 4, 2024

In the photocatalytic degradation of volatile organic compounds (VOCs), powdered catalysts have insufficient contact with gas and are prone to detachment from support. To address this challenge, we present a sacrificial template in-situ growing approach fabricate three-dimensional (3D) monolithic photocatalyst. The design combines n-type TiO₂ p-type Cu₂O semiconductors using foamed copper as substrate. 3D TiO₂/Cu₂O heterojunction foam was used evaluate its toluene removal efficiency under simulated sunlight 15 W UV disinfection lamp. results show that photocatalyst outperforms conventional in both light. After 180 min exposure 500 Xe lamp, achieved rate 90.2% for toluene. This performance improvement is attributed unique open internal structure, which enhances gas-solid mass transfer efficiency. addition, formation p-n junctions between prolongs lifetime photogenerated carriers, resulting higher catalyst activity. four cycles experiments, 88.0%, indicating stability. pathway, toxicity analysis catalytic mechanism by were explored. Furthermore, study demonstrates feasibility fabricating highly active semiconductor photocatalysts onto metal foams. offers promising solution enhance reactant area minimize resistance reactions.

Язык: Английский