Regulable pyrrolic-N-doped carbon materials as an efficient electrocatalyst for selective O₂ reduction to H₂O₂

Abstract

As a successful alternative to the complex and dangerous anthraquinone process, a simple and safe method for the efficient preparation of hydrogen peroxide is to use electrochemical two-electron oxygen reduction...

Improving the performance of biomass-based electrocatalysts by means of hot pressing

“…32 The order of the nitrogen contents measured by XPS is HPBE (7.74 at%) 4 BE (4.10 at%). Increasing the nitrogen content helps to raise the possibility of generating more active sites, thus leading to higher activities, 16,33,34 which can also be corroborated by the electrochemical surface areas (ECSAs) of HPBE and BE (Fig. S3, ESI †).…”

Recent progress in electrocatalytic selectivity in heterogeneous electro-Fenton processes

“…When the cathode contains more pyrrolic-N, a better 2e − ORR selectivity is achieved in the alkaline medium. 63 Wang et al synthesized a slightly N-doped carbon 2e − ORR catalyst by pyrolyzing a polydopamine coating on Vulcan XC72 carbon black. In H 2 O 2 production via the ORR in an acidic electrolyte, the catalyst showed a fewer h of 185 mV than that of XC and remarkably high selectivity of up to 96%.…”

Recent Progress of Transition Metal Selenides for Electrochemical Oxygen Reduction to Hydrogen Peroxide: From Catalyst Design to Electrolyzers Application

“…Up to now, a series of highly active catalysts have been discovered for two electron pathway, e.g., metal oxides, [8][9][10][11][12] single atom catalysts (SACs), [13][14][15][16] carbon materials. [17][18][19][20][21][22] SACs have attracted extensive interests, which bound *OH region for the 2e − process. Reproduced with permission.…”

“…Up to now, a series of highly active catalysts have been discovered for two electron pathway, e.g., metal oxides, [ 8–12 ] single atom catalysts (SACs), [ 13–16 ] carbon materials. [ 17–22 ] SACs have attracted extensive interests, which elevate the atomic disperse to a new realm and perform a distinguished intrinsic activity due to the extremely high atomic utilization. However, when the metal particles are reduced to the level of single atom, the specific surface area increases sharply, resulting in a drastic increase in the free energy of the metal surface, and it is easy to agglomerate and coupling to form large clusters during preparation and reaction, resulting in catalyst deactivation.…”