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Improved organic pollutants removal and simultaneous electricity production via integrating Fenton process and dual rotating disk photocatalytic fuel cell system using bamboo charcoal cathode
摘要： A coupling system combining Fenton process with dual rotating disk photocatalytic fuel cell (PFC) was developed to improve methyl orange (MO) removal and simultaneous electricity production, in which the (NH4)3PO4 modified bamboo charcoal (BC) was acted as cathode catalyst. Due to the existence of the N and P containing functional groups on the BC catalyst and the rotating electrode, the hybrid system could efficiently reduce oxygen to generate some hydroxyl radical and related species for MO removal. Therefore, Fenton-PFC-BC with rotation system showed a superior MO removal efficiency of 85%, 2.4 times higher than that in the traditional Fenton-PFC-Pt with aeration system. The radicals inhibition assays and hydrogen peroxide quantitative studies revealed that HO%, h+ and %O2- were primarily responsible for MO degradation. Furthermore, the MO removal performance for Fenton-PFC-BC with rotation system was investigated at different parameters (such as rotating speed, BC loading, pH and ferrous ion concentration) to obtain optimal operation conditions. Results of energy analysis and reusability experiment showed that the proposed Fenton-PFC-BC with rotation system provided a cost-effective and stable method for the organic degradation and energy recovery.
关键词： Bamboo charcoal,Fenton,Dual rotating disk photocatalytic fuel cell
更新于2025-09-23 15:23:52
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Peroxymonosulfate enhanced antibiotic removal and synchronous electricity generation in a photocatalytic fuel cell
摘要： Photocatalytic fuel cell (PFC) is promising owing to its synchronous organic pollutants removal and energy recycle, but it still remains to improve in the cell performance. Herein, we demonstrate a synergistic method adding peroxymonosulfate (PMS) into PFC to promote antibiotic tetracycline (TC) degradation and simultaneous electric power generation. The introduction of PMS could be activated by the photoelectric effects, also used as the electrolyte and electron acceptor, which could enhance the photoelectrocatalysis and spread the reaction space from the electrode surface to the whole system. Herein, the PFC/PMS augmented the TC decontamination by 82.83% and electricity production by 122.40% versus the PFC without introducing PMS, respectively. In addition, factors controlled namely PMS dosage, solution pH, and UV intensity were investigated for the cell performance of the coupling system. Furthermore, UVeVis spectrum and TOC analysis con?rmed the destruction mineralization of TC. Moreover, a series of radicals quenching experiments were implemented to explore the cooperative elimination mechanism, and the results indicated that hydroxyl and sulfate radicals played the key roles at the acidic condition, and the direct oxidation of PMS dominated the chief effect at the neutral environment, and singlet oxygen and superoxide anion acted the primary function in the alkaline circumstance.
关键词： Tetracycline degradation,Electricity production,Photocatalytic fuel cell,Peroxymonosulfate activation
更新于2025-09-23 15:22:29
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Visible-light photocatalytic fuel cell with Z-scheme g-C3N4/Fe0/TiO2 anode and WO3 cathode efficiently degrades berberine chloride and stably generates electricity
摘要： A visible-light Z-scheme g-C3N4/Fe0/TiO2 anodic catalyst was tested with cathodic WO3 in photocatalytic Fuel Cell (PFC) that efficiently degrades berberine chloride and simultaneously generate electricity at pH 2,5,7 and 13. The Stainless-steel mesh electrodes loaded with prepared catalyst were irradiated by visible-light in single chamber PFC. The highest removal of berberine Chloride, cell voltage, and power density were 91%, 0.8 V, and 16.4 W/m2 at a current density of 2.02 mA/cm2, respectively after 90 min irradiation in 0.05 M Na2SO4 electrolyte, with 10 ? external resistance. The impacts of pH and initial concentration of BEC on photocatalytic degradation and cell voltage were evaluated. The cell current density is enhanced while the photocatalyst activity increased. The constructed PFC maintained high-performance after 5 uses. Its use in degrading wide spectrum refractory pollutants and generate electricity is expected for the proved catalyst design, paired electrodes and high PFC performance for practical wastewater treatment.
关键词： Electricity generation,WO3,Visible-light,g-C3N4/Fe0/TiO2,Photocatalytic Fuel Cell,Berberine Chloride,Z-scheme
更新于2025-09-10 09:29:36
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A synergistic heterostructured ZnO/BaTiO3 loaded carbon photoanode in photocatalytic fuel cell for degradation of Reactive Red 120 and electricity generation
摘要： Photocatalytic fuel cell (PFC) is considered as a sustainable green technology which could degrade organic pollutant and generate electricity simultaneously. A synergistic double-sided ZnO/BaTiO3 loaded carbon plate heterojunction photoanode was fabricated in different ratios by using simple ultrasonication and mixed-annealed method. The double-sided design of photoanode allowed the lights irradiated at both sides of the photoanode. The ferroelectricity fabricated photoanode was applied in a membraneless PFC with platinum-loaded carbon as the cathode. Results revealed that the photoanode with 1:1 ratio of BaTiO3 and ZnO exhibited a superior photocatalytic activity among all the photoanodes prepared in this study. The heterojunction of this photoanode was able to achieve up to a removal efficiency of 93.67 % with a maximum power density of 0.5284 μW cm-2 in 10 mg L-1 of Reactive Red 120 (RR120) without any supporting electrolyte. This photoanode was able to maintain at high performance after recycling 3 times. Over loading of ZnO above 50% on BaTiO3 could lead to deterioration of the performance of PFC due to the charge defects and light trapping ability. The interactions, interesting polarizations of the photocatalysts and proposed mechanism of the n-n type heterojunction in the photoanode of ZnO/BaTiO3 was also discussed.
关键词： Photocatalytic fuel cell,Degradation,Reusability,ZnO/BaTiO3 heterojunction,Electricity Generation
更新于2025-09-09 09:28:46