N, S-Codoped Mesoporous Carbon Derived from Protic Salt for Oxygen Reduction Reaction

Abstract

Nitrogen/sulfur-codoped mesoporous carbon (CMK-3P) was readily prepared through direct carbonization of a protic salt [Phen][2HSO 4 ] in the presence of pristine SBA-15 template without the use of acid or metal catalysts for prepolymerization. CMK-3P is characteristic of the presence of large mesopores and even macropores caused by the curved and intertwined nanorods, high surface area (1030 m 2 g −1 ), large pore volume (2.403 cm 3 g −1 ) and high nitrogen (6.0 at%) and sulfur (0.61 at%) contents. These characteristics make CMK-3P as an efficient metal-free catalyst for oxygen reduction reaction.

Iron/Nitrogen/Phosphorus Co-Doped Three-Dimensional Porous Carbon as a Highly Efficient Electrocatalyst for Oxygen Reduction Reaction

“…[1][2][3][4][5] In the past decades, lots of attentions has been paid to develop alternative non-precious metal electrocatalysts, including transition metal oxides, sulphides, heteroatomic (N, B, P, S, et al) doped carbon (HDC) and metal/nitrogen doped carbon (M/N/C). [6][7][8][9][10][11][12][13][14][15][16][17][18] Among them, owing to the low cost, reasonable activity and stability, and abundance in the earth crust, HDC and M/N/C have become the research hotspot, although the nature of the active sites in these electrocatalysts are still controversial. [19][20][21][22][23] In 2009, Dodelet's group proposed a model microstructure of active-site for Fe/N/C catalysts.…”

Confined Pyrolysis within a Nanochannel to Form a Highly Efficient Single Iron Site Catalyst for Zn–Air Batteries

“…The small-angle XRD measurements were conducted on both the Fe SAs/ MC(950) and SBA-15 template (Figure 1a). Three wellresolved peaks of the SBA-15 hard template are indexed to the diffractions of (100), (110), and (200) planes of the hexagonal p6mm mesostructure, 24 while the Fe SAs/MC(950) sample exhibits the diffraction peak of the (110) plane, indicating that an ordered mesoporous structure is formed for Fe SAs/ MC(950). It is noted that the position of the (100) diffraction peak for Fe SAs/MC(950) is shifted toward a higher angle.…”

Versatile Synthesis of Carbon Materials using Protic Ionic Liquids and Salts as Precursors

“…Unfortunately, the majority of carbons produced from the examined PILs/PSs did not display any porosity or solely exhibited microporosity, thereby restricting their extensive application. [39] Nanocasting technology, however, presents an alternative approach for introducing mesopores into PIL/PSderived carbons, akin to a technique used with traditional precursors and aprotic ILs. [40] For instance, Phen-HS, a nitrogen/sulfur-co-doped mesoporous carbon, was directly carbonized from a single PS precursor, 1,10-phenanthrolinium dibisulfate ([Phen][2HSO 4 ]), using a colloidal silica template without any supplementary acid or metal catalysts.…”

“…Unfortunately, the majority of carbons produced from the examined PILs/PSs did not display any porosity or solely exhibited microporosity, thereby restricting their extensive application [39] . Nanocasting technology, however, presents an alternative approach for introducing mesopores into PIL/PS‐derived carbons, akin to a technique used with traditional precursors and aprotic ILs [40] .…”