STUDY ON THE ENERGY EFFICIENCY OF PHOTOCATALYTIC DEGRADATION OF ALKANES BY COUPLING ADSORPTION-DESORPTION OF TiO2-Bi2WO6/Zn(CH3COO)2-ACF COMPOSITE

Abstract

Abstract: TiO₂-Bi₂WO₆/Zn(CH₃COO)₂-ACF(TBZA) composite was prepared by hydrothermal and impregnation-sol-gel method,its morphology and structure of the composite were characterized by SEM, TEM, XRD, BET, UV-vis and I-T photocurrent response, and the degradation of propane in the adsorption-desorption coupling photocatalytic reactor was investigated. The results showed that the prepared materials had good photoelectron-hole separation rate. In the three-stage series adsorption-desorption coupled photocatalytic reactor, the propane mass concentration was 1000 mg/m³, the flow rate was 1.2 m³/h, the humidity was 33%, and the temperature was 34 ℃. The photocatalytic efficiency of TBZA composite was 85.8%, which was 48.9 percentage points higher than that of a single reactor, and the overall propane conversion decreased by less than 2% when the desorption temperature was 65 ℃ under ultraviolet irradiation, indicating that TBZA material had good performance as catalyst for recycling.

Key words: propane, composite, coupled adsorption-desorption, photocatalysis, tertiary reactor

References

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STUDY ON THE ENERGY EFFICIENCY OF PHOTOCATALYTIC DEGRADATION OF ALKANES BY COUPLING ADSORPTION-DESORPTION OF TiO₂-Bi₂WO₆/Zn(CH₃COO)₂-ACF COMPOSITE

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