Carbon nanotube supported MnO2 catalysts for oxygen reduction reaction and their applications in microbial fuel cells

Well‐Combined Magnetically Separable Hybrid Cobalt Ferrite/Nitrogen‐Doped Graphene as Efficient Catalyst with Superior Performance for Oxygen Reduction Reaction

“…The widely studied spinel multi ple metal oxides include MCo 2 O 4 (M = Ni, Mn, Fe, and Zn) [ 8,15,16 ] and Co x Mn 3-x O 4 (0 ≤ x ≤ 1), [ 17,18 ] while the reports on ferritebased multimetal oxides for ORR just have been investigated in recent years. [ 19 ] On the other hand, it is demonstrated that carbon supports, such as carbon black, [ 20 ] carbon nanotubes, [ 21 ] activated carbon [ 22 ] or chemically modifi ed graphene, [ 7 ] play a vitally important role in improving the ORR catalytic activity and stability of metal or metal oxide species. Among these carbon materials, graphene has attracted intensive interest in ORR, owing to its unique properties, such as fascinating structure, high surface area, and excellent electrical conductivity.…”

Manganese–polypyrrole–carbon nanotube, a new oxygen reduction catalyst for air-cathode microbial fuel cells

“…The exploration of efficient noble metal free catalysts is urgently required. To this end, modified carbon materials [13], metal oxides [14,15] and iron (Fe), cobalt (Co)-heterocycles [16,17] have been investigated as potential ORR catalysts. In addition, manganeseeporphyrin [18] and manganese oxidesepolypyrrole composites prepared by electro-polymerization [19,20] have been reported to possess good ORR catalytic capability in the unconventional electrolyte (benzoic anhydride) [18] or acidic environment [19,20] respectively.…”

Impact of the spatial distribution of sulfate species on the activities of SO42−/TiO2 photocatalysts for the degradation of organic pollutants in reverse osmosis concentrate

“…Besides conventional treatment methods such as activated carbon adsorption, coagulation, air stripping, chemical oxidation (e.g. chlorination or ozonation), and relatively new microbial fuel cells [6], recently advanced oxidation processes (AOPs) through combination of a few methods such as photocatalysis and chemical oxidation have drawn much attention. However, the AOP methods for ROC treatment are still not satisfactory due to low degradation ratio, harmful by-products or slow degradation speed [7][8].…”