Optimization of photothermal conversion and catalytic sites for photo-assisted-catalytic degradation of volatile organic compounds
Solar energy conversion is a promising strategy to enhance the elimination of volatile organic compounds (VOCs) and minimize power consumption. Herein, non-noble metal WC@WO 3 as cocatalyst was composited with CeO 2 to optimize photochemical and photothermal conversion for the catalytic ozonation of toluene and acetone. The photothermal conversion efficiencies of visible and infrared lights on 20%WC@WO 3 –CeO 2 were 2.2 and 10.4 times higher than those on CeO 2 , respectively, which indicates that the equilibrium temperature of the catalyst remarkably increased under full-spectrum light irradiation. Moreover, WC@WO 3 transferred electrons to CeO 2 in 20%WC@WO 3 –CeO 2 and thus remarkably improved the activity of catalytic sites. The synergy factor of light and O 3 on 20%WC@WO 3 –CeO 2 was 5.8, and the reaction rate of toluene and acetone reached 9274.5 and 35779.0 mg/(m 3 ∙min), respectively. This work provides a low-cost and high-efficient catalyst for the utilization of solar energy for VOC control.
危险品化学品经营许可证（带存储）