Bi‐Microporous Metal–Organic Frameworks with Cubane [M₄(OH)₄] (M=Ni, Co) Clusters and Pore‐Space Partition for Electrocatalytic Methanol Oxidation Reaction

Abstract

Embedding cubane [M4(OH)4] (M=Ni, Co) clusters within the matrix of metal–organic frameworks (MOFs) is a strategy to develop materials with unprecedented synergistic properties. Herein, a new material type based on the pore‐space partition of the cubic primitive minimal‐surface net (MOF‐14‐type) has been realized. CTGU‐15 made from the [Ni4(OH)4] cluster not only has very high BET surface area (3537 m2 g−1), but also exhibits bi‐microporous features with well‐defined micropores at 0.86 nm and 1.51 nm. Furthermore, CTGU‐15 is stable even under high pH (0.1 m KOH), making it well suited for methanol oxidation in basic medium. The optimal hybrid catalyst KB&CTGU‐15 (1:2) made from ketjen black (KB) and CTGU‐15 exhibits an outstanding performance with a high mass specific peak current of 527 mA mg−1 and excellent peak current density (29.8 mA cm−2) at low potential (0.6 V). The isostructural cobalt structure (CTGU‐16) has also been synthesized, further expanding the application potential of this material type.

Ultrathin Ni-MOF Nanobelts-Derived Composite for High Sensitive Detection of Nitrite

“…Metal-organic frameworks (MOFs) are expected to play a significant role in energy applications Xia et al, 2015;Tan et al, 2017;Liang et al, 2018;Wu et al, 2019;Yang et al, 2019;. Because the micro/nanoscale structure has a great potential to overcome the disadvantages of low specific surface area (SSAs) and poor contacts of active materials with electrolyte/pollutants compared to conventional bulks or aggregate materials.…”

A self‐penetrating and chemically stable zinc (ii)‐organic framework as multi‐responsive chemo‐sensor to detect pesticide and antibiotics in water

“…One thing to note is the fast‐growing metal organic frameworks (MOFs), which are designed from the perspective of molecules, making full use of the high stability of metal units and versatility of organic linkers, have attracted more and more attention for their potential applications in the fields of adsorption and separation, [ 4–10 ] electrode and photoelectric materials, [ 11–17 ] sensing and detection, [ 18–31 ] catalysis and photocatalysis. [ 32–34 ] Compared with other sensors, such as the conjugated organic probes, nanomaterials, carbon dots, oligomers, the luminescent metal–organic frameworks (LMOFs) possess obvious advantages of enormous structural diversity, adjustable pore size, large surface areas, readily function groups assisted analyte binding, and purposefully implanted active sites, render those LMOFs with the greatest potential as the sensory materials in detecting the POPs.…”

Two‐Dimensional MOF and COF Nanosheets: Synthesis and Applications in Electrochemistry

“…Recently, given that traditional bulk MOFs/COFs cannot fully meet the requirements of many special applications (especially in biological related applications, small‐size MOFs/COFs are needed to promote the internalization into cells), the preparation of MOF/COF nanocrystals with controllable size, shape and morphology has become a new challenge . Affected by the above research, a large number of studies on 2D MOFs/COFs have been published, mainly focusing on the exploration and optimization of the synthetic route .…”