MOF-derived N-doped carbon nanosticks coupled with Fe phthalocyanines for efficient oxygen reduction

Yang, Yuandong; Sun, Qiuhong; Xue, Jinhang; Xu, Shaojie; Mao, Lujiao; Miao, Tingting; Zhang, Linjie; Qian, Jinjie

doi:10.1016/j.cej.2023.142668

Cited by 18 publications

(7 citation statements)

References 40 publications

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“…Additionally, we designed a modified MIL-68 by utilizing H 2 BDC–NH 2 as the organic linker, where N-doped porous nanorods were easily acquired, displaying excellent conductivity and enhanced accessibility for metal induction. 56…”

Section: Mof Selectionmentioning

confidence: 99%

Insights on MOF-derived metal–carbon nanostructures for oxygen evolution

Chen,

Qian

2024

Dalton Trans.

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Section: Mof Selectionmentioning

confidence: 99%

Insights on MOF-derived metal–carbon nanostructures for oxygen evolution

Chen,

Qian

2024

Dalton Trans.

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“…Emerging as the times require, MOF-derivatives with excellent characteristics (larger specific surface area, higher porosity, tunable pore size, higher conductivity, good stability, and more exposed active species, etc.) are inspiring MOFs’ new potential for industrialization, which can be synthesized by direct high calcination. − Ideally, MOF-derived porous carbons can retain the original frameworks of MOFs during carbonization with the uniform embedment of nanosized metal particles. Unexpectedly, the collapse of MOFs during the pyrolysis of organic ligands will make MOF derivatives scarcely maintain the original MOF morphologies, such as the decrease of specific surface area, micropore volume, and interparticle porosity as well as the blockage of micropores.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic and Superhydrophobic Nanoporous Membranes for Emulsion Separation and Removal of Pesticides and Pharmaceutical Products

Chen,

Han,

Guo

et al. 2024

ACS Appl. Nano Mater.

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Metal organic framework (MOF)-derivatives have a larger specific surface area, higher porosity, tunable pore size, higher conductivity, good stability, more exposed active species, etc., but few literature are reported about their application potential in micropollutant separation and removal. In view of this, a robust MOF derivative-based photocatalytic superhydrophobic membrane (D6/ TiO 2 /MoS 2 /NiCo-NC/PVDF) was successfully fabricated for the first time through solvothermal synthesis and chemical modification, combined with a negative pressure-assisted loading approach. (1) The MoS 2 -doping strategy effectively avoided the collapse and coarsening of cauliflower-like MOFs during the calcination phase and simultaneously ensured the uniform distribution of metal particles in MOF-derived carbons. (2) The synergistic catalysis of the NiCo-MOF derivative, MoS 2 , and TiO 2 enhanced the transfer efficiency of electrons and free radicals, achieving efficient in situ degradation of pesticides and pharmaceutical and personal care products. (3) The introduction of sodium alginate greatly improved the adhesion between the coating and polyvinylidene fluoride (PVDF) membrane and simultaneously enhanced the growth of MOFs through complexation. (4) The cauliflower-like MOF-derived carbon skeleton with higher surface areas and micronanoporosity combined with a heterogeneous MoS 2 structure provided a large specific surface area and enough adsorption sites for various pollutants. High thermal calcination treatment greatly enhanced MOF growth rate, thus resulting in a flaky structure with high regularity and a large specific area. ( 5) The ultralow surface energy of interlaced siloxane molecules endowed the hybrid membrane with robust superhydrophobicity and superoleophilicity, always maintaining superhydrophobicity after long-time photodegradation. The final membrane achieved continuous emulsion separation and a photocatalytic self-cleaning property. The separation efficiency of the hybrid membrane for emulsions was still up to 97% after reuse for 120 cycles, and it could degrade 86.5% PRO, 90.1% ACE, 92.1% ASP, and 94.3% SMZ, respectively, with the initial concentration of 10 mg/L. The driving forces for oil−water separation and decontamination of the D6/TiO 2 /MoS 2 /NiCo-NC/PVDF membrane mainly involved the grasping forces of dodecamethylcyclohexasiloxane, capillary force of inner pores, electrostatic interaction, hydrogen bond interaction, partial p-π conjugation, van der Waals force, and lipophilicity.

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“…On the other hand, metal phthalocyanines (MPc) as molecular catalysts have garnered attention owing to their intrinsic M–N 4 active sites. − However, the activity of the M–N 4 sites in MPc remains unsatisfactory due to its symmetric electron distribution. Typically, the π–π interactions between MPc and the organic ligands or the carbon supports play a pivotal role in adjusting the electronic structure .…”

Section: Introductionmentioning

confidence: 99%

MOF-Derived Cobalt Nanoparticles with Dispersed Iron Phthalocyanines as Bifunctional Oxygen Electrocatalysts

Liu,

Sun,

et al. 2024

ACS Sustainable Chem. Eng.

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Iron phthalocyanine (FePc), characterized by its distinctive Fe−N 4 sites, represents a macromolecular catalyst with promising applications in bifunctional oxygen catalysis. However, its inherently flat and symmetrical configuration often results in relatively weak electrocatalytic performance. In this study, a novel approach was employed by first anchoring the Co-based zeolitic imidazolate framework onto microsized carbon spheres derived from a Zn-based coordination polymer, followed by the incorporation of dispersed FePc molecules. The resultant catalyst, denoted as FePc-CoNC-CMS, exhibited remarkable bifunctional oxygen reduction reaction/oxygen evolution reaction (ORR/OER) activity in an alkaline medium, notably achieving a half-wave potential of 0.87 V and an overpotential of 313 mV at 10 mA cm −2 . Both experimental and theoretical investigations revealed that the presence of FePc on the cobalt surface induced significant alterations in the electron distribution within the Fe center, thereby regulating the adsorption affinity of Fe−N 4 sites toward oxygen. This structural modification led to outstanding bifunctional activity. When applied in zinc−air batteries, it demonstrated an excellent power density of 147.6 mW cm −2 and satisfactory charge−discharge stability over a period of 70 h at 10 mA cm −2 . This pioneering work integrates metal−organic framework-derived metal−carbon nanomaterials with macromolecular catalysts, offering a novel and efficient pathway for multifunctional applications.

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MOF-derived N-doped carbon nanosticks coupled with Fe phthalocyanines for efficient oxygen reduction

Cited by 18 publications

References 40 publications

Insights on MOF-derived metal–carbon nanostructures for oxygen evolution

Insights on MOF-derived metal–carbon nanostructures for oxygen evolution

Photocatalytic and Superhydrophobic Nanoporous Membranes for Emulsion Separation and Removal of Pesticides and Pharmaceutical Products

MOF-Derived Cobalt Nanoparticles with Dispersed Iron Phthalocyanines as Bifunctional Oxygen Electrocatalysts

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