MOF-derived yolk-shell Co@ZnO/Ni@NC nanocage: Structure control and electromagnetic wave absorption performance

Cui, Yu-Hong; Liu, Zihao; Li, Xuexiang; Ren, Jianquan; Wang, Yabin; Zhang, Qiuyu; Zhang, Baoliang

doi:10.1016/j.jcis.2021.05.015

Cited by 82 publications

(16 citation statements)

References 45 publications

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“…[91] Because the chemical structures of these MAMs are identical, their EMW absorption properties can assist in clarifying the dependence of EMW absorption on topography. For example, Chen et al used two supramolecular MOF isomers (MIL-101-Fe and MIL-88B-Fe) as precursors for preparing Fe/C-based EMW absorption ZnOC@CoC@PAN ZIF-8@ZIF-67 Core-shell −50.62 5.86 [95] ZnO/NPC@Co/NPC ZIF-8@ZIF-67 −28.80 4.20 [96] Co/MnO/CNTs ZIF-8@ZIF-67 −58.00 4.50 [97] ZnO@C/Co 3 ZnC ZIF-8@ZIF-67 −62.90 5.50 [98] Co@C@NPC ZIF-8@ZIF-67 −57.20 5.70 [99] CoNi/TiO 2 MIL-125@ZIF-67 −65.3 4.40 [100] CoFe@C ZIF-67@PBA −44.10 5.20 [101] Co@ZnO/Ni@NC ZIF-67@ZIF-8 Yolk-shell −55.00 ≈3.60 [102] Co@NC ZIF-8@ZIF-67 Hollow multishell −52.50 4.40 [47] Cu/NC@Co/NC Cu-HKUST@ZIF-67 Core-satellite −54.13 5.19 [103] CoFe/FeZr 2 /CoZr 2 /ZrO 2 DUT-52@MIL-88B −65.2 4.80 [104] FeCoZn@C MIL-88B@MOF-5 −53.10 6.00 [105] composites (Figure 5d). [88] Additionally, different polar solvents have been used for MOF self-assembly to create supramolecular isomers (Figure 5c).…”

Section: Supramolecular Isomersmentioning

confidence: 99%

Texture Regulation of Metal–Organic Frameworks, Microwave Absorption Mechanism‐Oriented Structural Optimization and Design Perspectives

et al. 2022

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Texture regulation of metal–organic frameworks (MOFs) is essential for controlling their electromagnetic wave (EMW) absorption properties. This review systematically summarizes the recent advancements in texture regulation strategies for MOFs, including etching and exchange of central ions, etching and exchange of ligands, chemically induced self‐assembly, and MOF‐on‐MOF heterostructure design. Additionally, the EMW absorption mechanisms in approaches based on structure–function dependencies, including nano‐micro topological engineering, defect engineering, interface engineering, and hybrid engineering, are comprehensively explored. Finally, current challenges and future research orientation are proposed. This review aims to provide new perspectives for designing MOF‐derived EMW‐absorption materials to achieve essential breakthroughs in mechanistic investigations in this promising field.

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Section: Supramolecular Isomersmentioning

confidence: 99%

Texture Regulation of Metal–Organic Frameworks, Microwave Absorption Mechanism‐Oriented Structural Optimization and Design Perspectives

et al. 2022

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“…As is well known, dielectric loss type and magnetic loss type are the two most common wave-absorbing materials . Carbon materials are the most common dielectric loss materials, including graphene, , carbon nanotubes, , and various conductive polymers. , Magnetic loss materials mainly include elemental oxide or alloys of iron, cobalt, and nickel. , In practical applications, the two materials are often used in combination to achieve the ideal EMW absorption performance . However, this does not mean the more components of the material, the better its absorbing properties.…”

Section: Introductionmentioning

confidence: 99%

“…11,12 Magnetic loss materials mainly include elemental oxide or alloys of iron, cobalt, and nickel. 13,14 In practical applications, the two materials are often used in combination to achieve the ideal EMW absorption performance. 15 However, this does not mean the more components of the material, the better its absorbing properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Three-Dimensional Mo₂C/NC@MXene and Its Efficient Electromagnetic Absorption Properties

Yang

Cui

Wan

et al. 2022

ACS Appl. Mater. Interfaces

Self Cite

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The positively charged MoO 3 /PDA microspheres are obtained by stacking and assembly of the sheet structure, and the negatively charged MXene nanosheets are wrapped on the surface through the principle of electrostatic self-assembly. After annealing, a nitrogen-doped carbon composite and a MXene-coated Mo 2 C wave absorber are obtained. The formation of the wrinkled surface provides a complex pore structure, and the multiple interface reflections between the nanosheets enhance the absorption performance. The existence of heterogeneous interfaces and the uneven distribution of space charges accumulated between the interfaces effectively reduce the minimum reflection loss (RL min ). This work explores the effects of the ratio between MoO 3 /PDA and MXene nanosheets and loading amount on the microwave absorption properties. Mo 2 C/NC@MXene-2 obtained when the ratio of the two is 3:1 has the best absorption performance under 25% loading. The RL min is −59.36 dB, and the corresponding effective absorption bandwidth (EAB) is 4.6 GHz at 2.5 mm. This work expands the new applications of MXenebased and Mo 2 C-based materials and has a guiding significance for the design of electrostatic self-assembly materials.

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“…Therefore, the preparation of magnetic composite materials by compounding magnetic nanoparticles with carbon with good conductivity has become a research hotspot. Researchers have carried out a lot of work in this field, designing and preparing magnetic composite microspheres with core-shell [10], hollow [11], sandwich [12], flower-like [13][14][15] and bell-shaped [16] structures, as well as one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) composites with similar structures to wave absorbers [17]. On the basis of TCNFs, Zhang et al prepared magnetic wave absorbers with multi-shell heterostructures, including Fe@C [18], Fe/Fe 3 O 4 @TCNFs@TiO 2 [19] and TCF@Fe 3 O 4 @NCLs [20], and all of them showed excellent reflection loss and absorption bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Controllable Preparation of Fe3O4@RF and Its Evolution to Yolk–Shell-Structured Fe@C Composite Microspheres with High Microwave Absorbing Performance

Xue¹,

Lou²,

Yang³

2022

Coatings

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Fe3O4@RF microspheres with different phenolic (RF) layer thicknesses are prepared by adjusting the polymerization time. With the prepared Fe3O4@RF as the precursor, Fe@C composite microspheres with rattle-like morphology are obtained through one-step controlled carbonization. This method simplifies the preparation of rattle-shaped microspheres from sandwich microspheres. Fe@C microspheres exhibit excellent microwave absorbing properties. The morphology and composition of the product are investigated depending on the effects of carbonization temperature, time and thickness of the RF layer. When the carbonization temperature is 700 °C, the carbonization time is 12 h and the polymer shell thickness is 62 nm, the inner hollow Fe3O4 is completely reduced to Fe. The absorption properties of the materials are compared before and after the reduction of Fe3O4. Both Fe@C-12 and Fe3O4@C-700 show excellent absorbing properties. When the filler content is 50%, the maximum reflection loss (RLmax) of the rattle-shaped Fe@C microspheres is −50.15 dB, and the corresponding matching thickness is 3.5 mm. At a thickness of 1.7 mm, the RLmax of Fe3O4@C-700 is −44.42 dB, which is slightly worse than that of Fe@C-12. Both dielectric loss and magnetic loss play a vital role in electromagnetic wave absorption. This work prepares rattle-shaped absorbing materials in a simple way, which has significance for guiding the construction of rattle-shaped materials.

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MOF-derived yolk-shell Co@ZnO/Ni@NC nanocage: Structure control and electromagnetic wave absorption performance

Cited by 82 publications

References 45 publications

Texture Regulation of Metal–Organic Frameworks, Microwave Absorption Mechanism‐Oriented Structural Optimization and Design Perspectives

Texture Regulation of Metal–Organic Frameworks, Microwave Absorption Mechanism‐Oriented Structural Optimization and Design Perspectives

Preparation of Three-Dimensional Mo₂C/NC@MXene and Its Efficient Electromagnetic Absorption Properties

Controllable Preparation of Fe3O4@RF and Its Evolution to Yolk–Shell-Structured Fe@C Composite Microspheres with High Microwave Absorbing Performance

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MOF-derived yolk-shell Co@ZnO/Ni@NC nanocage: Structure control and electromagnetic wave absorption performance

Cited by 82 publications

References 45 publications

Texture Regulation of Metal–Organic Frameworks, Microwave Absorption Mechanism‐Oriented Structural Optimization and Design Perspectives

Texture Regulation of Metal–Organic Frameworks, Microwave Absorption Mechanism‐Oriented Structural Optimization and Design Perspectives

Preparation of Three-Dimensional Mo2C/NC@MXene and Its Efficient Electromagnetic Absorption Properties

Controllable Preparation of Fe3O4@RF and Its Evolution to Yolk–Shell-Structured Fe@C Composite Microspheres with High Microwave Absorbing Performance

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Preparation of Three-Dimensional Mo₂C/NC@MXene and Its Efficient Electromagnetic Absorption Properties