Carbon nanodots chelated with metal ions as efficient electrocatalysts for enhancing performance of microbial fuel cell based on sulfate reducing bacteria

Loukanov, Alexandrе; Angelov, Anatoliy; Takahashi, Yuki; Nikolov, I.; Nakabayashi, Seiichiro

doi:10.1016/j.colsurfa.2019.04.067

Cited by 10 publications

(3 citation statements)

References 33 publications

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“…When the growth environment of SRB is relatively harsh, SRB can directly or indirectly obtain electrons from the metal surface, and dissimilatory reactions reduce sulfate to corrosive hydrogen sulfide (H 2 S), promoting severe localized corrosion or the dissolution of metals. SRB-induced MIC has been widely studied, and several corrosion mechanisms have been proposed, including biocatalytic cathodic sulfate reduction (BCSR) and anode acceleration …”

Section: Introductionmentioning

confidence: 99%

“…SRB-induced MIC has been widely studied, and several corrosion mechanisms have been proposed, including biocatalytic cathodic sulfate reduction (BCSR) 2 and anode acceleration. 3 Because of their ideal combination of good corrosion resistance and biocompatibility and a high strength-to-weight ratio, titanium alloys are widely used in various fields, including aerospace, biomaterials, marine structures, and so forth. 4−6 It is well known that these alloys are immune to corrosion in many environments by the virtue of their stable and tenacious surface oxide films.…”

Section: Introductionmentioning

confidence: 99%

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Dissecting Anticorrosion and Antimicrobial Potency of an Ag Nanoparticle/NbC Nanocomposite Coating in a Marine Environment Containing Sulfate-Reducing Bacteria

Hao

Peng

et al. 2022

ACS EST Eng.

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To mitigate the microbiologically influenced corrosion of metallic components serving in marine environments, an innovative Ag nanoparticle (AgNP)/NbC nanocomposite coating was synthesized using a double glow discharge plasma method. The coating was composed of Ag nanoparticles together with NbC nanocrystals embedded in an amorphous carbon (a-C) matrix. The incorporation of Ag into the NbC coating played a significant role in determining both the grain size and crystallographic texture of the NbC phase, as well as the bonding state of the carbon species and the surface morphology of the coating. Following immersion in sulfate-reducing bacteria (SRB)-inoculated artificial seawater, the planktonic SRB cell count for the AgNPs/NbC nanocomposite coating was found to be two and three orders of magnitude lower than those of the Ag-free NbC coating and bare Ti-6Al-4V, respectively. The electrochemical corrosion behavior of the AgNPs/NbC nanocomposite coating was evaluated and compared to the Ag-free NbC coating and bare Ti-6Al-4V in SRB-inoculated artificial seawater by using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The semiconducting properties of the oxide film grown on the nanocomposite coating were drawn from Mott–Schottky analysis. The results showed that Ag additions improved the microbiologically influenced corrosion (MIC) resistance of the NbC coating and led to the transformation of the electronic structure of the oxide film from an n-type semiconductor to a p–n heterojunction structure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dissecting Anticorrosion and Antimicrobial Potency of an Ag Nanoparticle/NbC Nanocomposite Coating in a Marine Environment Containing Sulfate-Reducing Bacteria

Hao

Peng

et al. 2022

ACS EST Eng.

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“…In the present era, the scientific community has been mesmerized by microscopic organisms like bacteria and Alg as potential energy resources. Microorganisms have a significant role as biocatalysts by taking the advantage of being low‐cost, easy to grow, and eco friendly nature (Loukanov et al, 2019). Green Alg has the ability to convert any organic compound into fuel under the sunlight exposure by a process known as photosynthesis (Cevik et al, 2018; Çevik et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Quantum dots decorated photoanodes in bioelectrochemical fuel cells: Enhanced electricity generation using green algae

Çevik

Gondal

Alqahtani

et al. 2023

Biotech & Bioengineering

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The power performance of the bio-electrochemical fuel cells (BEFCs) depends mainly on the energy harvesting ability of the anode material. The anode materials with low bandgap energy and high electrochemical stability are highly desirable in the BEFCs. To address this issue, a novel anode is designed using indium tin oxide (ITO) modified by chromium oxide quantum dots (CQDs). The CQDs were synthesized using facile and advanced pulsed laser ablation in liquid (PLAL) technique. The combination of ITO and CQDs improved the optical properties of the photoanode by exhibiting a broad range of absorption in the visible to UV region.A systematic study has been performed to optimize the amount of CQDs and green Algae (Alg) film grown using the drop casting method. Chlorophyll (a, b, and total) content of algal cultures (with different concentrations) were optimized to investigate the power generation performance of each cell. The BEFC cell (ITO/ Alg10/Cr3//Carbon) with optimized amounts of Alg and CQDs demonstrated enhanced photocurrent generation of 120 mA cm −2 at a photo-generated potential of 24.6 V m −2 . The same device exhibited a maximum power density of 7 W m −2 under continuous light illumination. The device also maintained 98% of its initial performance after 30 repeated cycles of light on-off measurements.

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Producing electrical energy in microbial fuel cells based on sulphate reduction: a review

Rodrigues

Leão

2020

Environ Sci Pollut Res

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Carbon nanodots chelated with metal ions as efficient electrocatalysts for enhancing performance of microbial fuel cell based on sulfate reducing bacteria

Cited by 10 publications

References 33 publications

Dissecting Anticorrosion and Antimicrobial Potency of an Ag Nanoparticle/NbC Nanocomposite Coating in a Marine Environment Containing Sulfate-Reducing Bacteria

Dissecting Anticorrosion and Antimicrobial Potency of an Ag Nanoparticle/NbC Nanocomposite Coating in a Marine Environment Containing Sulfate-Reducing Bacteria

Quantum dots decorated photoanodes in bioelectrochemical fuel cells: Enhanced electricity generation using green algae

Producing electrical energy in microbial fuel cells based on sulphate reduction: a review

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