Two‐Dimensional Mesoporous Carbon Materials Derived from Fullerene Microsheets for Energy Applications

Abstract

Porous carbon materials rich in defects are promising candidates in energy storage and conversion applications. Herein, a facile template‐free approach is reported for the synthesis of a two‐dimensional (2 D) mesoporous carbon material derived from fullerene (C60) microsheets (FMSs) through simple heat treatment. The sample obtained at 1000 °C (FMS1000) shows a large surface area of 1507.6 m2 g−1 owing to the presence of mesopores and rich defects, which promote electron and mass transfer in the electrocatalytic process of the oxygen reduction reaction (ORR), showing an excellent performance with an onset potential of 0.95 V, a half‐wave potential of 0.85 V, and long‐term durability of 2000 cycles, comparable to the performance of commercial Pt/C. Moreover, FMS1000 displays a remarkable supercapacitive property with a specific capacitance of 330.7 F g−1 at 0.2 A g−1 and good long‐term stability with a capacitance retention of 97 % over 50 000 cycles. Thus, a practical strategy for the production of mesoporous carbon materials with different morphological structures and porous defects as high‐performance energy materials is advanced.

The Efficient Photocatalytic Degradation of Organic Pollutants on the MnFe2O4/BGA Composite under Visible Light

“…Particularly, the B atom with positive charge polarization substitution position (-BC 3 ) was the dominant species, which could serve as the activation region to migrate electrons rapidly, and thereby can facilitate the efficient separation of photogenerated carriers. In the deconvoluted C 1s spectrum ( Figure 4 e), the peak at 284.7 eV is ascribed to the sp 2 structure of C-C/C=C in graphene, and the peaks at 282.3, 285.6, and 287.7 eV could be assigned to C-B, C-O, and C=O, respectively [ 36 ]. In the deconvoluted O 1s spectrum ( Figure 4 f), the four fitted peaks centered at 530.5, 531.7, 532.5, and 533.3 eV are assigned to the Mn-O-Mn, Fe-O-C, Fe-OH, and C-O/C=O bands, respectively.…”

“…282.3, 285.6, and 287.7 eV could be assigned to C-B, C-O, and C=O, respectively [36]. In the deconvoluted O 1s spectrum (Figure 4f), the four fitted peaks centered at 530.5, 531.7, 532.5, and 533.3 eV are assigned to the Mn-O-Mn, Fe-O-C, Fe-OH, and C-O/C=O bands, respectively.…”

Morphology Engineering of Fullerene[C70] Microcrystals: From Perfect Cubes, Defective Hoppers to Novel Cruciform‐Pillars

“…The solvent molecules as a secondary lattice component interact closely with fullerene molecules, which distort the thermodynamically stable organization of fullerene molecules to form a solvent‐intercalated phase [6] . Therefore, FMNCs, especially C 60 micro/nanocrystals with many distinctive morphologies have been successfully prepared, including whiskers, rods, tubes, fibers, sheets, plates, cubes, polyhedrons, and have shown potential applications in photonics, sensors, energy devices and biology [1e,7] …”

Porous carbon nanoarchitectonics for the environment: detection and adsorption

“…For instance, two-dimensional mesoporous carbon sheets enriched with defect sites were prepared by the thermal annealing of fullerene microsheets obtained by the liquid–liquid interfacial precipitation of C 60 . 217…”