N-doped carbon nanotubes encapsulated with FeNi nanoparticles derived from defect-rich, molecule-doped 3D g-C₃N₄ as an efficient bifunctional electrocatalyst for rechargeable zinc–air batteries

Abstract

The lack of satisfactory bifunctional oxygen catalysts has been a major obstacle for the commercialization of zinc-air batteries (ZABs). Herein, the unique N-doped carbon nanotubes encapsulated with FeNi nanoparticles (FeNi/N-CNT)...

Na-doped g-C3N4/NiO 2D/2D laminated p–n heterojunction nanosheets toward optimized photocatalytic performance

“…34 g-C 3 N 4 and Na–g-C 3 N 4 exhibit similar characteristic bands, and ion doping changes the stacking of the 2D structured layers and the pore geometry, but the polymer backbone remains unchanged. 35 For NiO, the peaks around 409, 568, and 1385 cm −1 are related to the vibration of Ni–O, and the characteristic bands from 3367 to 3675 cm −1 are related to –OH and absorbed water. 36 Comparison of the characteristic bands of the composite and single samples indicates that NiO and g-C 3 N 4 are successfully recombined.…”

CoFe Alloy-Coupled Mo2C Wrapped by Nitrogen-Doped Carbon as Highly Active Electrocatalysts for Oxygen Reduction/Evolution Reactions

“…The above mixed solution was aged at room temperature (25 °C) for 2 h. The precipitate was collected by centrifugation and dried at 60 °C for 12 h. For synthesis of g-C 3 N 4 nanotubes, 5 g of melamine was put into a crucible and heated at 550 °C for 4 h with a heating rate of 5 °C min −1 in a muffle furnace. After cooling naturally to room temperature (25 °C), a yellow solid (g-C 3 N 4 nanotubes) was obtained and ground into powder for future use [ 17 , 18 ].…”

Boosting electrocatalytic water oxidation by vanadium–iron–nickel trimetal hydroxide catalysts through interphase ionic migration method

“…11,12 As a result, developing costeffective electrocatalysts from earth-abundant metals plays an essential role in robust and efficient OER electrocatalysts. 13 Currently, a variety of transition metal (Fe, Co, Ni and Cu)based nanomaterials (alloys, 14,15 oxides, 16 hydroxides, [17][18][19] sulfides, 20,21 phosphides, [22][23][24] and nitrides 25,26 ) have been reported as extraordinarily promising noble-metal-substitute OER catalysts under alkaline conditions. Thereinto, FeNibased materials, especially the FeNi hydroxides, have shown excellent OER electrocatalytic activity in alkaline media.…”