A solar light driven dual photoelectrode photocatalytic fuel cell (PFC) for simultaneous wastewater treatment and electricity generation

Bai, Jing; Wang, Rui; Li, Yunpo; Tang, Yuanyuan; Qing-yuan, Zeng; Xia, Ligang; Li, Xuejin; Li, Jinhua; Li, Caolong; Zhou, Baoxue

doi:10.1016/j.jhazmat.2016.02.052

Cited by 111 publications

(34 citation statements)

References 48 publications

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“…In this study, we pre-treated TiO 2 nanotubes in the nitrogen gas (TiO 2 (N 2 ) NTs) and then coupled them with BiVO 4 to form a BiVO 4 /TiO 2 (N 2 ) NTs heterojunction. We find that the photocurrent is increased by approximately 30 % compared to those obtained by previously reported BiVO 4 /TiO 2 NTs heterojunction [ 21 ]. Our PEC experiments further demonstrate the improved performance in the degradation of dyes.…”

Section: Introductionsupporting

confidence: 47%

“…Li et al [ 20 ] demonstrated that a proper facet contact between BiVO 4 and TiO 2 nanoparticles was the key to improving the photoactivity of BiVO 4 . Recently, we studied one-dimensional (1D) nanostructured TiO 2 coupled with a BiVO 4 heterojunction with straight channels for electron transportation that reduced carrier diffusion lengths and improved charge collection efficiencies [ 21 ]. However, TiO 2 has an intrinsically low mobility that limits the enhancement of photoactivity of the BiVO 4 –TiO 2 heterojunction.…”

Section: Introductionmentioning

confidence: 99%

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BiVO4/TiO2(N2) Nanotubes Heterojunction Photoanode for Highly Efficient Photoelectrocatalytic Applications

Wang

Bai

et al. 2016

Nano-Micro Lett.

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We report the development of a novel visible response BiVO4/TiO2(N2) nanotubes photoanode for photoelectrocatalytic applications. The nitrogen-treated TiO2 nanotube shows a high carrier concentration rate, thus resulting in a high efficient charge transportation and low electron–hole recombination in the TiO2–BiVO4. Therefore, the BiVO4/TiO2(N2) NTs photoanode enabled with a significantly enhanced photocurrent of 2.73 mA cm−2 (at 1 V vs. Ag/AgCl) and a degradation efficiency in the oxidation of dyes under visible light. Field emission scanning electron microscopy, X-ray diffractometry, energy-dispersive X-ray spectrometer, and UV–Vis absorption spectrum were conducted to characterize the photoanode and demonstrated the presence of both metal oxides as a junction composite.Graphical AbstractVisible-light response BiVO4/TiO2(N2) naontubes photoelectrode was fabricated for photoelectrochemical water splitting and organic degradation in this paper. Electronic supplementary materialThe online version of this article (doi:10.1007/s40820-016-0115-3) contains supplementary material, which is available to authorized users.

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Section: Introductionsupporting

confidence: 47%

Section: Introductionmentioning

confidence: 99%

BiVO4/TiO2(N2) Nanotubes Heterojunction Photoanode for Highly Efficient Photoelectrocatalytic Applications

Wang

Bai

et al. 2016

Nano-Micro Lett.

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“…The limited usage of these electrodes could be attributed largely to the inherent drawbacks of the material that result in poor response in visible-light region, weak stability and undesirable photoactivity, which eventually limit the performance of the PFC system. Forming a heterojunction by two different semconductors is an effective strategy to facilitate the hole/electron seperation and enhance the photocatalytic activity [18,19]. For instance, polyaniline (PANI), a conducting polymer, might be a good choice for TiO 2 sensitization [20] due to high absorption coefficients in the visible-light region, high mobility of charge carriers and good environmental stability.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient and Visible Light Responsive Heterojunction Composites as Dual Photoelectrodes for Photocatalytic Fuel Cell

et al. 2018

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Abstract:In the present work, a novel photocatalytic fuel cell (PFC) system involving a dual heterojunction photoelectrodes, viz. polyaniline/TiO 2 nanotubes (PANI/TiO 2 NTs) photoanode and CuO/Co 3 O 4 nanorods (CuO/Co 3 O 4 NRs) photocathode, has been designed. Compared to TiO 2 NTs electrode of PFC, the present heterojunction design not only enhances the visible light absorption but also offers the higher efficiency in degrading Rhodamine B-a model organic pollutant. The study includes an evaluation of the dual performance of the photoelectrodes as well. Under visible-light irradiation of 3 mW cm −2 , the cell composed of the photoanode PANI/TiO 2 NTs and CuO/Co 3 O 4 NRs photocathode forms an interior bias of +0.24 V within the PFC system. This interior bias facilitated the transfer of electrons from the photoanode to photocathode across the external circuit and combined with the holes generated therein along with a simultaneous power production. In this manner, the separation of electron/hole pair was achieved in the photoelectrodes by releasing the holes and electrons of PANI/TiO 2 NTs photoanode and CuO/Co 3 O 4 NRs photocathode, respectively. Using this PFC system, the degradation of Rhodamine B in aqueous media was achieved to an extent of 68.5% within a reaction duration of a four-hour period besides a simultaneous power generation of 85 µA cm −2 .

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“…However, due to limitations in the undesirable photo activity and weak stability of the electrodes, highly efficient and stable electrode material was still imperative for the PFC system. Relevant studies including novel anodic nano‐composite Fe/GtiP, and BiVO 4 /TiO 2 or ZnO/CuO nanowires with a higher photoconversion efficiency . Various factors including the electrolyte, external resistance and dissolved oxygen might affect PFC performance of degradation or electricity production; more detailed research should be explored.…”

Section: Introductionmentioning

confidence: 99%

“…Relevant studies including novel anodic nano-composite Fe/GtiP, and BiVO 4 /TiO 2 or ZnO/CuO nanowires with a higher photoconversion efficiency. 31 Various factors including the electrolyte, external resistance and dissolved oxygen might affect PFC performance of degradation or electricity production; 29 more detailed research should be explored. At present most PFCs are used in sewage treatment, 32,33 and more applications of PFC in other aspects of environmental remediation are expected to be discussed.…”

Section: Introductionmentioning

confidence: 99%

Environmental decontamination using photocatalytic fuel cells and photoelectrocatalysis‐microbial fuel cells

Liu

Shi

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND To decontaminate sites of pollutants, fuel cell and bio‐electrochemical fuel cell reactors can degrade pollutants and generate electricity simultaneously, potentially decrease cost, energy consumptions and treatment cycle. In this study, a photocatalytic fuel cell (PFC) and PEC‐MFC (integrated photo‐electro‐catalysis with microbial fuel cell) were investigated to decontaminate sand/water polluted by RhB, antibiotics and heavy metal ions. RESULTS In the PFC, paired electrodes with ZnIn2S4‐AgAgCl/GO or ZnIn2S4‐RGO/MnO2, effectively removed pollutants in sand/water. The removal of RhB was 95.6% in 100 min with an external resistance of 1 Ω under aeration. Adding cyclo‐dextrin increased pollutant removals, realized 66% removal of RhB in overlying water, and significant removal in sand after 5 h, and 70% removal of tetracycline in overlying water, but only 60% without cyclodextrin after 4 h. Adding KMnO4 and NaHSO3 promoted decontamination of tetracycline from sand/water, tetracycline in water was almost completely degraded in 3.5 h with the addition, but only about 65% without any addition. In the PEC‐MFC, integrating photo‐electro‐catalytic electrode with bio‐anode, Cr(VI) in the cathode chamber was reduced rapidly and the concentration of RhB in sand decreased quickly, nearly complete in 2 h. The Cr(VI) in sand was reduced in several hours, so that, compared with previous reports, the treatment time is significantly shortened. CONCLUSION The PFC and PEC‐MFC systems are successful in decontaminating sand/water in polluted sites and are cost‐effective and sustainable methods. By building an on‐site or off‐site system with washing and cycling of the liquid stream, it could be a convenient remediation method for polluted sites. © 2018 Society of Chemical Industry

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A solar light driven dual photoelectrode photocatalytic fuel cell (PFC) for simultaneous wastewater treatment and electricity generation

Cited by 111 publications

References 48 publications

BiVO4/TiO2(N2) Nanotubes Heterojunction Photoanode for Highly Efficient Photoelectrocatalytic Applications

BiVO4/TiO2(N2) Nanotubes Heterojunction Photoanode for Highly Efficient Photoelectrocatalytic Applications

Highly Efficient and Visible Light Responsive Heterojunction Composites as Dual Photoelectrodes for Photocatalytic Fuel Cell

Environmental decontamination using photocatalytic fuel cells and photoelectrocatalysis‐microbial fuel cells

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