Ternary MOF-on-MOF heterostructures with controllable architectural and compositional complexity via multiple selective assembly

Abstract

Assembly of different metal-organic framework (MOF) building blocks into hybrid MOF-on-MOF heterostructures is promising in chemistry and materials science, however the development of ternary MOF-on-MOF heterostructures with controllable architectural and compositional complexity is challenging. Here we report the synthesis of three types of ternary MOF-on-MOF heterostructures via a multiple selective assembly strategy. This strategy relies on the choice of one host MOF with more than one facet that can arrange the growth of a guest MOF, where the arrangement is site-selective without homogenous growth of guest MOF or homogenous coating of guest on host MOF. The growth of guest MOF on a selected site of host MOF in each step provides the opportunity to further vary the combinations of arrangements in multiple steps, leading to ternary MOF-on-MOF heterostructures with tunable complexity. The developed strategy paves the way towards the rational design of intricate and unprecedented MOF-based superstructures for various applications.

Rational Design and Growth of MOF‐on‐MOF Heterostructures

“…The selective site growth strategy is not only limited to the growth assembly between the two types of MOFs. On this basis, a multiple selective assembly strategy between the three types of MOFs is further proposed to successfully achieve the site‐selective assembly of ternary MOFs, [ 63 ] such as MIL‐125@ZIF‐67@ZIF‐8, MIL‐125@ZIF‐8@ZIF‐67, MIL‐125@ZIF‐8/Zn,Co‐ZIF, MIL‐125@ZIF‐67@Zn/Co‐ZIF, MIL‐125@ZIF‐8@Zn/Co‐ZIF. Meanwhile, Zhang et al.…”

“…Furthermore, in 2016, the Oh's team [ 62 ] made logical inferences based on the different growth behaviors and morphological characteristics of MOF‐on‐MOF for the first time, opening up a new situation for the development of MOF‐on‐MOF compounds. Recently, in 2020, the Yu group [ 63 ] from East China Normal University proposed a multiple selection assembly strategy of MOF‐on‐MOF hybrids to expand from binary to ternary heterostructures. So far, various MOF‐on‐MOF hybrids with different architectures have been successfully developed through various methods, and many progresses have been made in different fields.…”

Rational Design of a ZIF‐67/Cobalt‐Glycolate Heterostructure with Improved Conductivity for High Cycling Stability and High‐Capacity Lithium Storage

“…The MOFs-on-CPs heterostructure not only combine the advantage of each component but also tune their unique properties and break the limitations of individual material, which may provide more possibilities to enhance their properties and improve their application. [11][12][13][14][15] The well-designed MOFs-on-CPs heterostructure, having mismatched cell lattices, can introduce abundant lattice defects, distortions, and dislocations. The lattice defects, distortions, and dislocations may cause the charge redistribution and heterogeneous electrons, exerting effects to the performance of lithium ion storage.…”

“…Under this concept, design lattice‐mismatched MOFs‐on‐CPs heterostructure via the conjugation of metallic coordination polymers is an effective method to achieve the desired performance. The MOFs‐on‐CPs heterostructure not only combine the advantage of each component but also tune their unique properties and break the limitations of individual material, which may provide more possibilities to enhance their properties and improve their application [11–15] . The well‐designed MOFs‐on‐CPs heterostructure, having mismatched cell lattices, can introduce abundant lattice defects, distortions, and dislocations.…”

The Hydrolyzed Mil-88B(Fe) With Improved Surface Area for High-Capacity Lithium Ion Battery

“…The natural graphite as the commercial LIB anode has shown advantages of well stability and abundant resource (Deng et al, 2017;Li et al, 2018;Ming et al, 2018;Huang et al, 2020). However, the low theory specific capacity (372 mAh g −1 ) becomes the biggest obstacle (Wang et al, 2017;Xu et al, 2017;Xi et al, 2019;Liu et al, 2020).…”