期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 319, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121894
关键词
Photo -assisted fuel cell; LDH-based catalyst; Persulfate activation; Electro-Fenton-like; Pollutant degradation; Electrical power generation; Ppy; MWCNTs; Fe 3 O 4 nanocomposite
A novel self-driven photo-assisted fuel cell system was constructed, which utilized CuFe-LDH as a photoactivator to enhance the degradation of quinoline and electricity production. The optimized PFC system showed efficient removal of quinoline and improved cell performance.
A novel self-driven photo-assisted fuel cell (PFC) system composed of a visible responsive photoanode (TiO2 nanotubes/Ag/AgBr) and polypyrrol/multi-walled carbon nanotube/Fe3O4 (Ppy/MWCNT/Fe3O4) cathode was constructed. A coupling method was employed by introducing CuFe-layered doubled hydroxide (CuFe-LDH) as a photoactivator of persulfate (PS) into a photo fuel cell (PFC) to promote the degradation of quinoline and generate synchronous electricity. The optimum PFC system indicated an efficient and stable removal of quinoline (98.2 ℅) with a rate constant of 1.69 min-1, an open circuit voltage of 1.1 V, a short circuit current of 2.85 mA cm-2, and a power density of 0.76 mW cm-2. The PFC/ CuFe-LDH/PS indicated significant cell performance, incrementing the quinoline degradation by 42.76% and electricity production by 80.26% compared to the single photocatalytic fuel cell system. This work presents a high-efficient approach to eliminate organic compounds and synchronously generate electric power.
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