Electrochemically derived functionalized graphene for bulk production of hydrogen peroxide

• Munaiah Yeddala,
• Pallavi Thakur,
• Anugraha A and
• Tharangattu N. Narayanan

Beilstein J. Nanotechnol. 2020, 11, 432–442, doi:10.3762/bjnano.11.34

• ; functionalized graphene; H2O2 production; water treatment; Introduction Hydrogen peroxide (H2O2) is identified as one among the most important 100 chemicals in the world, and its applications extend from the pharmaceutical industry to water purification [1][2][3]. Today, a majority of the required H2O2 is

• H2 gas [9]. The major roadblock in this method is the development of a sustainable electrocatalyst for the selective reduction of oxygen to H2O2 [19][20][21][22][23]. Today, most electrochemical H2O2 production methods rely on precious-metal-based materials or transition metal and/or metal oxides

• functionalized EEG samples are stable electrocatalysts for electrochemical H2O2 production even under harsh alkaline conditions. Hence it can be concluded that the presence of oxygen functional groups is a key factor in improving the ORR, and they undergo the redox process during the reaction in acidic medium

Alloyed Pt₃M (M = Co, Ni) nanoparticles supported on S- and N-doped carbon nanotubes for the oxygen reduction reaction

• Stéphane Louisia,
• Yohann R. J. Thomas,
• Pierre Lecante,
• Marie Heitzmann,
• M. Rosa Axet,
• Pierre-André Jacques and
• Philippe Serp

Beilstein J. Nanotechnol. 2019, 10, 1251–1269, doi:10.3762/bjnano.10.125

• /RHE the fractions of H2O2 produced are below 1% for all catalysts. In this voltage region, the ORR occurs only through the four electron process. The H2O2 production is significantly higher at low potential, between 0.05 and 0.4 V/RHE, because of the oxygen reduction on carbon [80]. The amount of H2O2

• produced by the reference Pt3Co/CB is higher than for all the Pt3Co samples and most of the Pt3Ni catalysts prepared in this study. Thus, the H2O2 production is not an obstacle for using these catalysts for PEMFC applications. Structural characterization of the best catalysts For a better understanding of