Novel composite functional photocatalytic fuel cell assisted by Fenton-like reactions

Sun, Qiong; Wu, Songhao; You, Di; Zang, Tao; Dong, Lifeng

doi:10.1016/j.apsusc.2018.10.188

Cited by 28 publications

(8 citation statements)

References 36 publications

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“…7,8 Compared to MFC in which much attention should be paid to maintaining and monitoring the microbial activity, PFC system could be much more easy to develop and operate. 9…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

2019

ACS Omega

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A novel integrating system coupled with photocatalytic fuel cell and Fenton system assisted by reverse electrodialysis (PREC) is proposed. The results demonstrate that H 2 O 2 concentration increased continuously in the reaction process to finally reach 960 mg/L and the current became stable at around 5.2 mA. The salinity-driven potential derived from the high concentration and low concentration cells in the hybrid system was 0.72 and 0.90 V respectively, at the salinity ratio of 50 and 100. The hybrid system has an energy recovery of 16%, a cathodic efficiency of 51%, and the maximum power of 76 W/m 2 at a salinity ratio of 50, with a 100 Ω external resistance. It is proved that PREC-Fenton possessed great potential in industrial wastewater treatment.

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“…7,8 Compared to MFC in which much attention should be paid to maintaining and monitoring the microbial activity, PFC system could be much more easy to develop and operate. 9…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

2019

ACS Omega

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“…A quartz reaction tank (available working volume: 100 mL) equipped with a self-biased TiO 2 –WO 3 /Si PVC photoanode and a CNW@CF cathode was used to construct the DFC, whose concrete structure composition diagram is displayed in Figure S2. The TiO 2 –WO 3 /Si PVC photoanode, a two-part combination whose front electrode was TiO 2 –WO 3 and the rear part was Si PVC, could effectively initiate charge separation . Meanwhile, the cheap CNW@CF cathode rapidly reduced NO 3 – into NH 4 + .…”

Section: Methodsmentioning

confidence: 99%

Novel Denitrification Fuel Cell for Energy Recovery of Nitrate-N and TN Removal Based on NH₄⁺ Generation on a CNW@CF Cathode

Chen

Zhang

et al. 2022

Environ. Sci. Technol.

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NO 3 − is an undesirable environmental pollutant that causes eutrophication in aquatic ecosystems, and its pollution is difficult to eliminate because it is easily converted into NH 4 + instead of N 2 . Additionally, it is a high-energy substance. Herein, we propose a novel denitrification fuel cell to realize the chemical energy recovery of NO 3 − and simultaneous conversion of total nitrogen (TN) into N 2 based on the outstanding ability of NH 4 + generation on a three-dimensional copper nanowire (CNW)modified copper foam (CF) cathode (CNW@CF). The basic steps are as follows: direct and highly selective reduction of NO 3 − to NH 4 + rather than to N 2 on the CNW@CF cathode, on which negative NO 3 − ions can be easily adsorbed due to their doubleelectron layer structure and active hydrogen ([H]) can be generated due to a large number of catalytic active sites exposed on CNWs. Then, NH 4 + is selectively oxidized to N 2 by the strong oxidation of chlorine free radicals (Cl • ), which originate from the reaction of chlorine ions (Cl − ) by photogenerated holes (h + ) and hydroxyl radicals (OH • ) under irradiation. Then, the electrons from the oxidation on the photoanode is transferred to the cathode to form a closed loop for external power generation. Owing to the continuous redox loop, NO 3 − completely reduces to N 2 , and the released chemical energy is converted into electrical energy. The results indicate that 99.9% of NO 3 − can be removed in 90 min, and the highest yield of electrical power density reaches 0.973 mW cm −2 , of which the nitrate reduction rates on the CNW@CF cathode is 79 and 71 times higher than those on the Pt and CF cathodes, respectively. This study presents a novel and robust energy recycling concept for treating nitrate-rich wastewater.

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“…[59] In recent studies, TiO2 nanotube array (TNA) photoanode for PFC was synthesized by a sonoelectrochemical anodization method on a titanium foil. [60][61][62] Meanwhile, investigators have reported that high photoexcited electron transfer efficiency and stability can be obtained by short and robust TNA in the PFC system. [63][64][65][66] However, there are projected limitations in large-scale applications.…”

Section: Photoanodementioning

confidence: 99%

“…[6,198] The results indicate that the degradation rate can be significantly improved by combining with the Fenton system using the same electrodes. [62] Recently, a novel PFC integration system has been reported…”

Section: Wastewater Treatmentmentioning

confidence: 99%

Photocatalytic fuel cell – A review

Chen

Leung

et al. 2022

Chemical Engineering Journal

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Novel composite functional photocatalytic fuel cell assisted by Fenton-like reactions

Cited by 28 publications

References 36 publications

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Novel Denitrification Fuel Cell for Energy Recovery of Nitrate-N and TN Removal Based on NH₄⁺ Generation on a CNW@CF Cathode

Photocatalytic fuel cell – A review

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Novel composite functional photocatalytic fuel cell assisted by Fenton-like reactions

Cited by 28 publications

References 36 publications

Enhanced Electricity Generation and H2O2 Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Enhanced Electricity Generation and H2O2 Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Novel Denitrification Fuel Cell for Energy Recovery of Nitrate-N and TN Removal Based on NH4+ Generation on a CNW@CF Cathode

Photocatalytic fuel cell – A review

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Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Novel Denitrification Fuel Cell for Energy Recovery of Nitrate-N and TN Removal Based on NH₄⁺ Generation on a CNW@CF Cathode