Scaling-up of microbial electrosynthesis with multiple electrodes for in situ production of hydrogen peroxide

Abstract

Up-scaled microbial electrosynthesis with multiple electrodes to synthesize H 2 O 2 The H 2 O 2 yield was higher than that of laboratoryscale systems using graphite cathode Energy consumption was lower than that of laboratory-scale (bio) electrochemical systems Systematic evaluation of the influence of operating parameters on H 2 O 2 production

Manipulation of oxygen evolution reaction kinetics of a free-standing CoSe2–NiSe2heterostructured electrode by interfacial engineering

“…43,44 Interface engineering is regarded as one potent pathway to expedite catalytic kinetics because multidoped hybrid nanostructures have synergistic effects on the electrocatalytic activity compared to their single-component counterparts. [45][46][47][48][49] Electronic modulation can be achieved by constructing heterostructures, and their unique electron-recongured nanointerfaces accelerate electrode performance by regulating the adsorption of the reactants and electronic interactions at the interface. 50,51 It is desirable to fabricate freestanding electrodes with high catalyst loading, abundant active sites, and superior activity by interfacial engineering.…”

Highly Efficient H2O2 Electrogeneration Enabled by Controlling the Wettability of Gas Diffusion Electrodes and the Reaction Pathway in Divided Cells

“…The rapid increase of pH in the divided cell directed that the consumption rate of H + at the cathode for the synthesis of H 2 O 2 was faster than the generation rate at the anode. 55 These findings suggest that the alkaline environment is important for efficient H 2 O 2 production. It seems that 2e − selectivity for the ORR relies on the pH of the electrolyte, which is consistent with the previous findings.…”

“…12 after 10 min electrolysis in the divided cell, while it decreased to <2 in the undivided cell, which remains almost constant after 10 min electrolysis. The rapid increase of pH in the divided cell directed that the consumption rate of H + at the cathode for the synthesis of H 2 O 2 was faster than the generation rate at the anode . These findings suggest that the alkaline environment is important for efficient H 2 O 2 production.…”

A hybrid subnano cluster electrocatalysis process for recalcitrant wastewater treatment

“…Recently, the in-situ electrochemical synthesis of H 2 O 2 from 2e − oxygen reduction reaction (ORR) has attracted intensive attention in labs and industries [17]. Although substantial efforts have been invested in catalyst preparation and cathode fabrication [18][19][20], few studies have shown the practical utility of H 2 O 2 -AOPs at device levels. Low H 2 O 2 dosage cannot meet the treatment requirements of high COD wastewater, while excessive H 2 O 2 introduction needs post-treatment of the effluent [4].…”