Integration of metal-organic frameworks and covalent organic frameworks: Design, synthesis, and applications

Yang, Li; Karimi, Meghdad; Gong, Yun‐Nan; Dai, Nan; Safarifard, Vahid; Jiang, Hai‐Long

doi:10.1016/j.matt.2021.03.022

Cited by 200 publications

(92 citation statements)

References 117 publications

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“…Additionally, the high porosity of MOFs also guarantees the large surface area of the resulted MOF/COF photocatalysts and can facilitate the mass transfer during the catalytic reaction . The integrated MOF/COF systems have already been proved to achieve superior performance compared to the corresponding single component. − However, the development of MOF/COF photocatalysts for water splitting has just begun and only very few such photocatalysts were reported to exhibit excellent hydrogen evolution rate, but which still needed the help of Pt cocatalysts. ,, …”

Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Porous MOF/COF Hybrid Photocatalysts for Visible-Light-Driven Hydrogen Evolution

Xue

Pan

Huang

et al. 2021

ACS Appl. Mater. Interfaces

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Construction of porous metal–organic framework (MOF)/covalent organic framework (COF) hybrid photocatalysts for enriched structures and unprecedented properties is still a great challenge but highly desirable. Herein, a new series of Cu3(HHTP)2-MOF/Tp-Pa-1-COF hybrids with different MOF content are successfully fabricated. The as-prepared MOF/COF hybrids exhibit intimate interaction based on the coordination of Cu ions with the carbonyl oxygen and enamine nitrogen groups in Tp-Pa-1. The integrated conductive Cu3(HHTP)2 is able to act as an excellent electron extractor instead of noble metal cocatalysts to significantly promote the charge transfer and inhibit the recombination of photogenerated electron–hole pairs. As a results, the optimized photocatalyst with Cu3(HHTP)2:Tp-Pa-1 ratio of 1:15 achieves the highest hydrogen evolution rate of 1.76 mmol·h–1·g–1 under visible-light irradiation, which is about 93 times higher than that of the pure Tp-Pa-1 and even slightly higher than that of the Tp-Pa-1 with Pt (3 wt %) as a cocatalyst.

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Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Porous MOF/COF Hybrid Photocatalysts for Visible-Light-Driven Hydrogen Evolution

Xue

Pan

Huang

et al. 2021

ACS Appl. Mater. Interfaces

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“…Recently, metal-organic frameworks (MOFs) have attracted extensive interest as novel porous materials [10]. MOFs present a larger surface area, easy functionalization, an enhanced structural diversity and better designability, compared to other traditional porous materials [11]. Additionally, by applying pyrolysis instead of other synthesis routes, MOFs with periodic crystalline structures and porosities can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Nanostructure Engineering of Metal–Organic Derived Frameworks: Cobalt Phosphide Embedded in Carbon Nanotubes as an Efficient ORR Catalyst

et al. 2021

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Heteroatom doping is considered an efficient strategy when tuning the electronic and structural modulation of catalysts to achieve improved performance towards renewable energy applications. Herein, we synthesized a series of carbon-based hierarchical nanostructures through the controlled pyrolysis of Co-MOF (metal organic framework) precursors followed by in situ phosphidation. Two kinds of catalysts were prepared: metal nanoparticles embedded in carbon nanotubes, and metal nanoparticles dispersed on the carbon surface. The results proved that the metal nanoparticles embedded in carbon nanotubes exhibit enhanced ORR electrocatalytic performance, owed to the enriched catalytic sites and the mass transfer facilitating channels provided by the hierarchical porous structure of the carbon nanotubes. Furthermore, the phosphidation of the metal nanoparticles embedded in carbon nanotubes (P-Co-CNTs) increases the surface area and porosity, resulting in faster electron transfer, greater conductivity, and lower charge transfer resistance towards ORR pathways. The P-Co-CNT catalyst shows a half-wave potential of 0.887 V, a Tafel slope of 67 mV dec−1, and robust stability, which are comparatively better than the precious metal catalyst (Pt/C). Conclusively, this study delivers a novel path for designing multiple crystal phases with improved catalytic performance for energy devices.

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“…46,47 By integrating the aromaticity of MOFs and the ordered pillar−columnar structure characteristics of COFs, the fabricated MOF@COF hybrid materials display a strong π−π stacking interaction, overcoming the inherent disadvantages of sole MOFs and COFs and resulting in a synergistic effect to provide multifunctional properties for specific and personalized applications. Diverse MOF@COF heterostructures have been developed and used as catalysts, 48−51 gas adsorbents, 52 supercapacitors, 53 and biosensors. 54,55 A Co-MOF@TPN-COF nanoarchitecture has been developed and exploited as novel platforms for an oxytetracycline aptasensor, giving an extremely low LOD of 0.217 fg mL −1 detected by the electrochemical technique, 54,55 much lower than the biosensors for detecting oxytetracycline using other nanomaterials as platforms.…”

Section: Introductionmentioning

confidence: 99%

“…The MOF@COF hybrids can effectively integrate unique advantages of their parents, producing novel porous nanomaterials with outperformed physicochemical properties. , By integrating the aromaticity of MOFs and the ordered pillar–columnar structure characteristics of COFs, the fabricated MOF@COF hybrid materials display a strong π–π stacking interaction, overcoming the inherent disadvantages of sole MOFs and COFs and resulting in a synergistic effect to provide multifunctional properties for specific and personalized applications. Diverse MOF@COF heterostructures have been developed and used as catalysts, − gas adsorbents, supercapacitors, and biosensors. , A Co-MOF@TPN-COF nanoarchitecture has been developed and exploited as novel platforms for an oxytetracycline aptasensor, giving an extremely low LOD of 0.217 fg mL –1 detected by the electrochemical technique, , much lower than the biosensors for detecting oxytetracycline using other nanomaterials as platforms. , Thus far, however, there is no report on the construction of the dual-mode PEC–EC biosensors for the detection of HIV-1 based on the core–shell MOF@COF hybrids with π–π stacking interaction and sizable specific surface.…”

Section: Introductionmentioning

confidence: 99%

MOF@COF Heterostructure Hybrid for Dual-Mode Photoelectrochemical–Electrochemical HIV-1 DNA Sensing

Zhu

Zhang

et al. 2021

Langmuir

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We developed a novel metal–organic framework (MOF)@covalent–organic framework (COF) hybrid with a hierarchical nanostructure and excellent photoactivity, which further acted as the bifunctional platform of a dual-mode photoelectrochemical (PEC) and electrochemical (EC) biosensor for detecting HIV-1 DNA via immobilizing the HIV-1 DNA probe. First, the presynthesized Cu-MOF nanoellipsoids were used as the template for the in situ growth of the COF network, which was synthesized using copper-phthalocyanine tetra-amine (CoPc-TA) and 2,9-bis[p-(formyl)phenyl]-1,10-phenanthroline as building blocks through the Schiff base condensation. In view of the large specific surface area, abundant reserved amino group, excellent electrochemical activity, and high photoactivity, the obtained Cu-MOF@CuPc-TA-COF heterostructure not only can serve as the sensitive platform for anchoring the HIV-1 DNA probe strands but also can be utilized as the signal transducers for PEC and EC biosensors. Thereby, the constructed biosensor shows the sensitive and selective analysis ability toward the HIV-1 target DNA via the complementary hybridization between probe and target DNA strands. The dual-mode PEC and EC measurements revealed that the Cu-MOF@CuPc-TA-COF-based biosensor displayed a wide linear detection range from 1 fM to 1 nM and an extremely low limit of detection (LOD) of 0.07 and 0.18 fM, respectively. In addition, the dual-mode PEC–EC biosensor also demonstrated remarkable selectivity, high stability, good reproducibility, and preferable regeneration ability, as well as acceptable applicability, for which the detected HIV-1 DNA in human serum showed good consistency with real concentrations. Thereby, the present work can open a new dual-mode PEC–EC platform for detecting HIV-1 DNA based on the porous–organic framework heterostructure.

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Integration of metal-organic frameworks and covalent organic frameworks: Design, synthesis, and applications

Cited by 200 publications

References 117 publications

In Situ Fabrication of Porous MOF/COF Hybrid Photocatalysts for Visible-Light-Driven Hydrogen Evolution

In Situ Fabrication of Porous MOF/COF Hybrid Photocatalysts for Visible-Light-Driven Hydrogen Evolution

Nanostructure Engineering of Metal–Organic Derived Frameworks: Cobalt Phosphide Embedded in Carbon Nanotubes as an Efficient ORR Catalyst

MOF@COF Heterostructure Hybrid for Dual-Mode Photoelectrochemical–Electrochemical HIV-1 DNA Sensing

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