Evaluation of the algal-derived biochar as an anode modifier in microbial fuel cells

Kumar, Ashok; Sharma, Kalpana; Pandit, Soumya; Mathuriya, Abhilasha Singh; Prasad, Ram

doi:10.1016/j.biteb.2023.101414

Cited by 7 publications

(1 citation statement)

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“…Other studies have reported larger particle sizes for nanoparticles synthesized using non-cyanobacteria sources. Ahmad et al (2015) synthesized TiO2NP using alpha-amylase and obtained an average grain size of 50 nm [23]. SEM micrographs also confirmed that the biosynthesized nanoparticles were spherical (Figure 2C).…”

Section: Synthesis Of Tio 2 Nanoparticlementioning

confidence: 79%

Application of Biogenic TiO2 Nanoparticles as ORR Catalysts on Cathode for Enhanced Performance of Microbial Fuel Cell

et al. 2023

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Microbial fuel cells (MFCs) use microorganisms to break down organic matter and generate power, which is an exciting new field of research. MFCs’ power generation relies on oxygen reduction (ORR) at the cathode. However, the slow kinetics of the ORR can severely limit the performance of MFCs. Additionally, the growth of biofilm on the cathode hampers the ORR process. In order to ensure the sustainability of MFCs over time, it is crucial to employ bifunctional catalysts that can address these issues. Biogenic titanium dioxide (TiO2) nanoparticles (NPs) were synthesized and applied to a graphite sheet cathode in this study. Cyanobacteria, Phormidium species NCCU-104, was used to bio-fabricate titanium dioxide (TiO2) nanoparticles. NPs were characterized using SEM and TEM analysis to determine their size, shape, surface morphology, and XRD. The particles had an average size of 18.11 nm, were spherical, and were well-dispersed, according to the results of the physicochemical characterization. TiO2 NPs were evaluated in MFC using different concentrations (0.5–2.5 mg/cm2) in the cathode to generate electricity and coulombic efficiency. MFC with a cathode impregnated with 2.0 mg/cm2 TiO2 NP produced maximum power density (15.2 W/m3), which was 38% more than 0.5 mg/cm2 TiO2 NP. The overall study results indicated that biogenic TiO2 nanoparticles (NPs) could be an effective and low-cost catalyst in the oxygen reduction reaction (ORR) and significantly improve biofouling. Due to its efficient and affordable contribution to the ORR, these results imply that biogenic TiO2 NPs might be a feasible alternative for improving the performance of MFCs.

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Section: Synthesis Of Tio 2 Nanoparticlementioning

confidence: 79%