Edge‐Plane‐Rich Nitrogen‐Doped Carbon Nanoneedles and Efficient Metal‐Free Electrocatalysts

Abstract

CNN news: N-doped carbon nanoneedles (CNNs) are synthesized by self-assembling core-shell nanostructures and nanoreactors around cellulose nanoneedles, and subsequent graphitization. The resulting graphitic nanoneedles (see picture) have well-organized graphitic multi-layers and large proportions of N-doped edge planes. The materials serve as efficient metal-free electrocatalysts for hydrazine oxidation.

Carbon catalysts for electrochemical hydrogen peroxide production in acidic media

“…This could be due to the fact that different nitrogen containing functionalities can have different influences on the selectivity for the ORR, as the nature of the active sites for ORR in CN-type catalysts is still controversial (compare for instance refs [75,[77][78][79]). This is in line with these findings of Biddinger and Ozkan [80] and Zhao et al [75], that indicate that the overall nitrogen content is a poor indicator of ORR activity, and only certain types of nitrogen, e.g., on the edges of graphitic sheets promotes the 4-electron process [81,82].…”

Recycling the biowaste to produce nitrogen and sulfur self-doped porous carbon as an efficient catalyst for oxygen reduction reaction

“…Many efforts have been reasonably devoted to developing efficient ORR electrocatalysts. At the moment the hot topic in this field is to find non-precious, even metal-free ORR catalysts to substitute the leading platinum-based one to steer clear of its inherent defects such as high cost, easy corrosion, poor durability, and inescapable carbon monoxide (CO) poisoning [10][11][12][13][14][15][16][17][18][19][20][21][22]. Till now, non-metal carbon nanomaterials mono-doped/dual-doped/tri-doped with heteroatoms such as nitrogen (N), boron (B), sulfur (S), and phosphorus (P) have been generally considered as one of the striking alternative ORR electrocatalysts [22][23][24][25][26][27][28][29][30][31].…”

Copper nanoparticles stabilized by reduced graphene oxide for CO2 reduction reaction

“…Various methods and devices to generate sustainable forms of energy that are efficient and affordable have been reported [1][2][3][4]. In addition to clean energy, the high amount of CO 2 emitted in the atmosphere must also be mitigated [5,6].…”