Convenient synthesis of polymetallic metal–organic gels for efficient methanol electro-oxidation

Abstract

Novel Ni-based AlNiCu-MOG and AB&AlNiCu-MOG composite materials were successfully fabricated, which exhibited superior MOR activities with a current density of 17.1 and 33.24 mA cm−2, respectively.

Hierarchical porous metal–organic gels and derived materials: from fundamentals to potential applications

“…Furthermore, the synthesis of multi-metallic MOGs has also been explored as a promising pathway for MOG based electrocatalysts. 326 Owing to these properties, MOGs and MOG based materials are employed in electrocatalysis, examples of which will be discussed below.…”

“…In addition to ORR, MOG-based catalytic systems have also been employed in the oxygen evolution reaction (OER), CO 2 reduction reaction and methanol oxidation reaction (MOR). 319,326,327 The OER reaction is considered an essential reaction in metal-air batteries, water-splitting reactions and other energy storage and conversion devices. 328 In this context, Cao et al designed a trimetallic MOG based on a tritopic triazine tricarboxylate and Co, Ni and Fe ions (CoFeNi-1 MOG).…”

“…Knowing the good performance of Ni based electrocatalysts for MOR, Wang and colleagues fabricated bimetallic (AlNi-MOG) and trimetallic (AlNiCu-MOG) gels for MOR with the building blocks of the MIL-53 (M(OH)(BDC)) framework. 326 The activity of the synthesized electrocatalysts was probed by CV measurements which in the absence of methanol showed a redox peak for AlNi-MOG and AlNiCu-MOG attributed to the Ni 2+ /Ni 3+ pair. This indicates that Ni 3+ ions in AlNi-MOG and AlNiCu-MOG are the active species for methanol oxidation.…”

Phytic Acid‐Based FeCo Bimetallic Metal‐Organic Gels for Electrocatalytic Oxygen Evolution Reaction

“…Taking advantage of chemical diversity and easy preparation, metal‐organic gels (MOGs) [31–37] attract growing attention as electrocatalysts in oxygen evolution reaction, [33,35] electrooxidation, [38,39] oxygen reduction reaction [32,40] and others [41] . Recently a new catalogue of MOGs have been shown to be synthesized simply from PA and a diversity of metal ions under mild conditions [42,43] .…”

In Situ Synthesis of Surface-Mounted Novel Nickel(II) Trimer-Based MOF on Nickel Oxide Hydroxide Heterostructures for Enhanced Methanol Electro-Oxidation

“…Among the large number of catalyst materials, nickel-based materials, such as nanostructured nickel oxide, nickelous hydroxide, nickel oxyhydroxide, and their heterostructures with available oxidation reduction state of Ni 2+ and Ni 3+ , have been confirmed to display promising efficient MOR activity under alkaline environments ( Li et al, 2017 ; Bott-Neto et al, 2019 ; Wang T.-J. et al, 2019 ; Liu et al, 2021 ; Wang et al, 2021 ). Nevertheless, the substantial changes in MOR performance are needed to match the kinetic superiority of platinum-based materials ( Mansor et al, 2019 ).…”