Pt-decorated MOF-derived Ni–N–C materials as efficient electrocatalysts for methanol oxidation

Abstract

High performance anode electrocatalysts for direct methanol fuel cells (DMFCs) draw great attention due to their promising commercial applications. Carbon materials derived from metal-organic framework (MOF) are widely used in...

N‐doped Porous ZIF@PDA/Pt Catalysts with Ultra‐Low Pt for Methanol Oxidation

“…Among them, the sample Pt 0.13 /Ni-NC possesses the best performance, with the ECSA value of 46.36 m 2 g À 1 and current density of 1900.00 mA mg Pt À 1 for MOR under alkaline conditions. [14] Although the current density of the sample Pt 0.13 /Ni-NC is slightly higher than that of ZIF@PDA/Pt-5-900 (1719.28 mA mg Pt À 1…”

“…Ni-embedded nitrogen-doped carbon (Ni-NC) in MOF was prepared by Ni-PBA pyrolysis, and the prepared Pt nanoparticles (NPs) were then loaded onto Ni-CN. [14] The NÀ C derivatives prepared by MOF shared similar structures and properties as those of the precursors. The utilization of NÀ C derivatives as carriers for noble metals in the preparation of electrocatalysts enhanced the electrocatalytic oxidation performance of methanol.…”

“…The prepared ZIF@PDA/Pt-5-900 still possessed considerable or better catalytic effect compared with the previous reported catalyst materials, such as Pt 0.13 /Ni-NC, Pt/Co@NCNTs-MC800-4, Pt/Co-NCNT-HPC800, Pt-CoP-NCZ/CNT, PtÀ Co/CNTs, C-ZIF-CuPt and Pt 0.10 /Cu-MoC (Table 2). [14,20,23,40,[49][50][51] Luan et al synthesized a series of MOF-derived Ni-NÀ C supported Pt-based nanomaterials using Ni-containing MOF materials as carriers. Among them, the sample Pt 0.13 /Ni-NC possesses the best performance, with the ECSA value of 46.36 m 2 g À 1 and current density of 1900.00 mA mg Pt À 1 for MOR under alkaline conditions.…”

Preparation of MOF-derived molybdenum-carbide-modified PtCu nano-alloy catalysts and their methanol oxidation performance

“…In recent studies, the periodic porous and hybrid structure of MOFs has provided a unique advantage for the fabrication of carbon and metal-based nanostructured materials. MOFs have been used in the preparation of derivative materials for the precursor to prepare MOF-derived porous carbon and MOF-derived metal oxides, and metal–carbon and metal-oxide–carbon composite materials 24–27 showing a very high surface area and uniform pore rate, making them very suitable as electrocatalyst carrier materials. In addition, MOF-derived carbon materials also contain transition-metal elements, which can form nano-alloy particles with Pt.…”

“…In addition, MOF-derived carbon materials also contain transition-metal elements, which can form nano-alloy particles with Pt. 27–29 Their synergistic effect leads to improved catalytic activity and stability. They are also promising carrier materials for catalysts.…”