期刊
出版社
ELSEVIER
DOI: 10.1016/j.mseb.2021.115321
关键词
Dielectric barrier discharge; Ethyl acetate; g-C3N4; Ag/g-C3N4 composite material
资金
- Anhui Province's 2018 Annual Key Research and Development Plan Project [1804a09020096]
The Ag/g-C3N4 composite catalyst prepared through ultrasonic-calcination process showed improved dispersion of Ag on g-C3N4 and increased number of active sites. Application of Ag/g-C3N4 as a catalyst in DBD plasma enhanced the degradation efficiency and mineralization ratio of EA, while reducing O-3 content and mitigating secondary pollution.
An Ag/g-C3N4 composite was successfully synthesized through an ultrasonic-calcination process. The catalyst was characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and ultraviolet visible absorption spectroscopy (UV-Vis) analyses. The results showed that Ag supported on g-C3N4 was highly dispersed, and the number of active sites increased. Ag/g-C3N4 was applied as a catalyst to dielectric barrier discharge (DBD) plasma for ethyl acetate (EA) degradation. The Ag loading improved the response range of g-C3N4 to visible light and increased the photocatalytic performance. The infrared spectrum analysis of exhaust gas indicated that the main degradation products of EA were CO, CO2 , ozone (O-3), and NO2. DBD coupled with the catalyst not only elevated the degradation efficiency of EA as well as the mineralization ratio of EA, but also reduced the content of O-3 and abated secondary pollution.
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