Integration of Pd nanoparticles with engineered pore walls in MOFs for enhanced catalysis

Pan

et al. 2021

Research

Isostructural MOFs with similar crystallographic parameter are easily available for MOF-on-MOF growth and possible to form core–shell structure by isotropic growth. However, due to well-matched cell lattice, selective growth in isostructural MOF heterostructures remains a great challenge for engineering atypical MOF heterostructures. Herein, an anisotropic MOF-on-MOF growth strategy was developed to structure a range of multilayer sandwich-like ZIF-L heterostructures via stacking isostructural ZIF-L-Zn and ZIF-L-Co alternately with three-, five-, seven-, and more layer structures. Moreover, these heterostructures with highly designable feature were fantastic precursors for fabricating derivatives with tunable magnetic and catalytic properties. Such strategy explores a novel way of achieving anisotropic MOF-on-MOF growth between isostructural MOFs and opens up new horizons for regulating the properties by MOF modular assembly in versatile functional nanocomposites.

Section: Resultsmentioning

confidence: 99%

Anisotropic MOF-on-MOF Growth of Isostructural Multilayer Metal–Organic Framework Heterostructures

Pan

et al. 2021

Research

“…The hybrid characteristics of MOFs can enable an almost limitless suite of building blocks for the construction of functional MOFs through reasonable designing and assembling of metal nodes and organic linkers in the framework. [10][11][12][13][14][15][16][17][18][19][20] As emerging crystalline materials with a modular nature, MOFs have been identified as an excellent platform to arrange highly ordered organic chromophore linkers at the molecular level. These merits endow MOF materials with outstanding fluorescence anisotropy and make them excellent candidates for anti-counterfeiting, data storage and biological monitoring.…”

Section: Introductionmentioning

confidence: 99%

An anthracene based metal–organic framework showing efficient angle-dependent polarized emission, luminescence thermometry, and photoelectronic response

Guo

et al. 2022

Dalton Trans.

“…Among them, interfacial microenvironment modulation is regarded as an efficient route to boost the catalytic activity of the samples. For example, Prof. Jiang's group utilized this strategy to significantly improve the catalytic activity of the metal nanoparticles/MOFs composites, [ 28–30 ] in which the regulation of the interfacial microenvironment between metal nanoparticles and MOFs did not only tune the electronic structure of the compounds but also provided ample catalytic sites during the catalytic process. More importantly, the charge transfer and separation rate was also increased by this strategy, which resulted in superior catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Microenvironment Modulation Enhancing Catalytic Kinetics of Binary Metal Sulfides Heterostructures for Advanced Water Splitting Electrocatalysts

Qian

et al. 2021

Small Methods

Interfacial microenvironment modulation has been proven to be a promising route to fabricate highly efficient catalysts. In this work, the lattice defect‐rich NiS2/MoS2 nanoflakes (NMS NFs) electrocatalysts are successfully synthesized by a simple strategy. Benefiting from the abundant lattice defects and modulated interfacial microenvironment between NiS2 and MoS2, the prepared NMS NFs show superior catalytic activity for water splitting. Particularly, the optimized NMS NFs (the molar ratio of Ni:Mo = 5:5) exhibit remarkable catalytic activity toward overall water splitting with a voltage of 1.60 V at 10 mA cm−2 in alkaline media, which is lower than that of the noble‐metal‐based electrocatalysts (1.68 V at 10 mA cm−2). The NMS NFs electrocatalysts also show exceptional long‐term stability (>50 h) for overall water splitting. The density functional theory results demonstrate that the injection of NiS2 into MoS2 can greatly optimize the catalytic kinetics and reduce the energy barrier for hydrogen/oxygen evolution reactions. The work does not only offer a promising candidate for a highly efficient water splitting electrocatalyst but also highlights that interfacial microenvironment modulation is a potential strategy to optimize the catalytic kinetics.