Excellent performance of Pt0 on high nitrogen-containing carbon nanotubes using aniline as nitrogen/carbon source, dispersant and stabilizer

Abstract

Novel high nitrogen-containing carbon nanotubes (NC-CNT) (14% N) as catalyst support have been successfully prepared using aniline as a dispersant to CNT and as a source for both carbon and nitrogen coated on the surface of the CNT.

Support‐Induced Oxidation State of Catalytic Ru Nanoparticles on Carbon Nanofibers that were Doped with Heteroatoms (O, N) for the Decomposition of NH3

“…Carbon nanofibers (CNFs) or carbon nanotubes (CNTs) that are doped with nitrogen have shown superior performance to their un‐doped counterparts as catalyst supports for different reactions. For instance, they have been used to support Ru catalysts for ammonia decomposition,1, 2 to support Pt electrocatalysts3 or Fe catalysts4 for the oxygen‐reduction reaction, as Pd supports for the direct synthesis of H 2 O 2 from H 2 and O 2 ,5 as Pd supports for the hydrogenation of cynamaldehyde,6 as supports of Pd and Au for the selective aerobic oxidation of alcohols,7 and as supports of Au for the preferential oxidation of CO 8. There are several benefits to N‐doped carbon supports, such as improved activity, owing to better dispersion of the catalyst,1, 7 increased selectivity,6, 9 owing to specific interactions between the doped support and the metal, and enhanced stability, because the nitrogen groups contribute to keeping the metal particles well‐dispersed8, 10 and in a reduced state 11.…”

Chapter 3. Novel carbon materials modified with heteroatoms as metal-free catalyst and metal catalyst support

“…171 Small and uniformly dispersed Pt nanoparticles (1.4 AE 0.4 nm) were then anchored on the surface of N-CNT using benzylamine as the stabilizer. For the Pt/N-CNT catalyst, cyclic voltammogram measurements show an extremely high EAS (111.4 m 2 g À1 ) compared to the commercial E-TEK catalyst (65.2 m 2 g À1 ).…”

Doped Nanostructured Carbon Materials as Catalysts

“…Metals like Pt, Ru, Pd or Au, have been used in a myriad of applications such as selective oxidations, 215,216 hydrogenations, 217,218 and electrocatalysis. [219][220][221] Given the preference for boron and phosphorous doping for the edges of graphitic planes, where dangling bonds are located, there are important implications regarding metal deposition. It has been well established that phosphorous species will preferentially bond to armchair (1120) faces, whilst boron will tend to favor the attachment to the zigzag (1010) faces.…”