Facile fabrication of ultrafine Pt nanoparticles supported on 3D macro-/oversized mesoporous N-doped carbon for efficient methanol oxidation

Enhancing Methanol Oxidation Reaction with Platinum‐based Catalysts using a N‐Doped Three‐dimensional Graphitic Carbon Support

“…synthesized N‐doped macro/oversized mesoporous carbon support using N‐doped carbon nanotubes as spacers for N‐doped carbon nanosheets. Pt NPs supported on these 3D architectured N‐doped supports exhibited enhanced activity and stability for MOR in acidic media in comparison to the other nanoporous carbon catalysts reported in their study [15] . Zhang et al .…”

“…Pt NPs supported on these 3D architectured Ndoped supports exhibited enhanced activity and stability for MOR in acidic media in comparison to the other nanoporous carbon catalysts reported in their study. [15] Zhang et al prepared a honeycomb-like mesoporous nitrogen-doped carbon spheres (MNCS) using dopamine as the carbon and nitrogen precursor and identified that Pt/MNCS catalyst was electrochemically more active and more stable than the conventional Pt/C catalyst in alkaline media. [10] Hence, the in-depth investigation of in-situ N-doped three-dimensional (3D) graphitic carbon structure as a support material for methanol oxidation reaction in both acidic and alkaline media is required to understand the catalyst-support interactions and further improve the performance.…”

Oxygen Vacancy‐Enriched Co3O4 as Efficient Co‐catalyst for Pt Nanoparticles towards Methanol Electrooxidation

“…The XRD patterns of the pCo 3 O 4 /C-2 h and rCo 3 O 4 /C composites are displayed in Figure 1a, and the diffraction peaks at 19.0°, 31.1°, 36.7°, 59.1°and 65.0°belong to the (111), ( 220), ( 311), ( 511) and (440) planes of Co 3 O 4 (PDF# 42-1467), respectively. [40] It can be seen that rCo 3 O 4 /C-2 h and pCo 3 O 4 /C show almost the same XRD patterns, which proves that the crystalline phase and structure had not been destroyed after the treatment of NaBH 4 . As conducted in Figure 1b, the peaks at 25.3°can be attributed to the (002) plane of C, and the peaks at 39.7°, 46.3°, 67.4°and 81.4°are associated with the (111), ( 200), ( 220) and (311) planes of Pt (PDF# 04-0802), respectively.…”

“…The XRD patterns of the pCo 3 O 4 /C‐2 h and rCo 3 O 4 /C composites are displayed in Figure 1a, and the diffraction peaks at 19.0°, 31.1°, 36.7°, 59.1° and 65.0° belong to the (111), (220), (311), (511) and (440) planes of Co 3 O 4 (PDF# 42–1467), respectively [40] . It can be seen that rCo 3 O 4 /C‐2 h and pCo 3 O 4 /C show almost the same XRD patterns, which proves that the crystalline phase and structure had not been destroyed after the treatment of NaBH 4 .…”

Recent developments of nanocarbon based supports for PEMFCs electrocatalysts

“…Regrettably, in this case, there was no clear understanding about the reason for the CO resistance improvement of the catalyst. This could be because nitrogen doping may change the pore size of the carbon support to facilitate the release of excess CO molecules, thereby reducing contact between the catalyst and CO [137]. Additionally, it may increase the oxidability of the catalyst, allowing CO to preferentially react with O2 molecules to avoid CO poisoning [138].…”