Carbonized metal–organic frameworks nanorods as recyclable photocatalyst for visible light-induced water oxidation

Zhang, Min; Luo, Jianmin; Liang, Xiaoyu; Yan, Baolin; Байкенов, М. И.; Su, Xintai; Chi, Le; Yang, Chao

doi:10.1016/j.matlet.2017.08.119

Cited by 9 publications

(3 citation statements)

References 11 publications

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“…As shown in Fig. 3 d, GMX-MFe3 exhibits characteristic peaks ascribed to Fe 2 p (711.3 eV for Fe 2 p 3/2 , 724.5 eV for Fe 2 p 1/2 [ 54 ]), indicating the successful anchoring of Fe 2 C on the lamellar structural units of the microspheres. High-resolution XPS spectra of C 1 s and Ti 2 p are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Boosting Interfacial Polarization Through Heterointerface Engineering in MXene/Graphene Intercalated-Based Microspheres for Electromagnetic Wave Absorption

Wang

Estévez

et al. 2023

Nano-Micro Lett.

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Multi-layer 2D material assemblies provide a great number of interfaces beneficial for electromagnetic wave absorption. However, avoiding agglomeration and achieving layer-by-layer ordered intercalation remain challenging. Here, 3D reduced graphene oxide (rGO)/MXene/TiO2/Fe2C lightweight porous microspheres with periodical intercalated structures and pronounced interfacial effects were constructed by spray-freeze-drying and microwave irradiation based on the Maxwell–Wagner effect. Such approach reinforced interfacial effects via defects introduction, porous skeleton, multi-layer assembly and multi-component system, leading to synergistic loss mechanisms. The abundant 2D/2D/0D/0D intercalated heterojunctions in the microspheres provide a high density of polarization charges while generating abundant polarization sites, resulting in boosted interfacial polarization, which is verified by CST Microwave Studio simulations. By precisely tuning the 2D nanosheets intercalation in the heterostructures, both the polarization loss and impedance matching improve significantly. At a low filler loading of 5 wt%, the polarization loss rate exceeds 70%, and a minimum reflection loss (RLmin) of −67.4 dB can be achieved. Moreover, radar cross-section simulations further confirm the attenuation ability of the optimized porous microspheres. These results not only provide novel insights into understanding and enhancing interfacial effects, but also constitute an attractive platform for implementing heterointerface engineering based on customized 2D hierarchical architectures.

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Section: Resultsmentioning

confidence: 99%

Boosting Interfacial Polarization Through Heterointerface Engineering in MXene/Graphene Intercalated-Based Microspheres for Electromagnetic Wave Absorption

Wang

Estévez

et al. 2023

Nano-Micro Lett.

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“…The magnetic property makes these composites easy to collect after the reaction for recycling. [ 124 ] Such a simple method can be optimized to fabricate desirable morphologies for other transition metal‐based MOFs. Furthermore, the formation mechanisms of porosities and the charge generation/charge transfer of the 1D MOF derivatives need to be deeply investigated by employing the in situ imaging and the operando spectroscopy techniques.…”

Section: Mof Derived Nanocomposites For Photocatalytic Applicationsmentioning

confidence: 99%

Recent Advances in Metal–Organic Frameworks Derived Nanocomposites for Photocatalytic Applications in Energy and Environment

et al. 2021

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Solar energy is a key sustainable energy resource, and materials with optimal properties are essential for efficient solar energy-driven applications in photocatalysis. Metal-organic frameworks (MOFs) are excellent platforms to generate different nanocomposites comprising metals, oxides, chalcogenides, phosphides, or carbides embedded in porous carbon matrix. These MOF derived nanocomposites offer symbiosis of properties like high crystallinities, inherited morphologies, controllable dimensions, and tunable textural properties. Particularly, adjustable energy band positions achieved by in situ tailored self/external doping and controllable surface functionalities make these nanocomposites promising photocatalysts. Despite some progress in this field, fundamental questions remain to be addressed to further understand the relationship between the structures, properties, and photocatalytic performance of nanocomposites. In this review, different synthesis approaches including self-template and external-template methods to produce MOF derived nanocomposites with various dimensions (0D, 1D, 2D, or 3D), morphologies, chemical compositions, energy bandgaps, and surface functionalities are comprehensively summarized and analyzed. The state-of-the-art progress in the applications of MOF derived nanocomposites in photocatalytic water splitting for H 2 generation, photodegradation of organic pollutants, and photocatalytic CO 2 reduction are systemically reviewed. The relationships between the nanocomposite properties and their photocatalytic performance are highlighted, and the perspectives of MOF derived nanocomposites for photocatalytic applications are also discussed.

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“…Metal‐organic frameworks (MOFs), as a novel class of porous inorganic–organic hybrid materials, have received a great deal of attention in gas storage, membrane separation,, catalysis and chemical sensors due to their fascinating features, such as permanent porosity, large specific surface area as well as tunable structure and components. Recently, MOFs have been demonstrated to be promising precursors or templates to construct porous micro/nano structures for versatile applications ,. In thermolysis, the porosity and long‐range ordering of MOFs could offer a fast and convenient access for incoming and leaving small molecules (such as CO 2 , H 2 O and others) in the transformation process, easily leading to the formation of porous and hollow structures with high surface area while maintaining the geometric shape of the pristine MOFs.…”

Section: Introductionmentioning

confidence: 99%

Metal‐Organic Frameworks‐Derived Porous In₂O₃ Hollow Nanorod for High‐Performance Ethanol Gas Sensor

et al. 2017

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Designing hollow micro/nano structures for gas sensing materials is highly desirable for boosting gas sensing properties and still remains challenging, especially through a simple and economic way. Herein, porous In2O3 hollow nanorod (In2O3‐HNR), which was successfully fabricated by thermal decomposition of an In–MOF (CPP‐3) precursor, was applied as gas sensing materials. The pristine CPP‐3 and obtained In2O3‐HNR were systematically characterized by various techniques, such as XRD, SEM, TEM, TGA‐DTA, XPS, Raman and N2 physisorption. Characterization results indicated that the hexagonal rod‐like shape of original CPP‐3 was maintained after calcination, whereas the surface became rough and concave. In addition, the obtained In2O3‐HNR displayed a hollow interior with porous shell composed by In2O3 nanoparticles (9 nm). Taking advantage of this unique porous nanostructure, In2O3‐HNR exhibited a response as high as 6.2 to 5 ppm ethanol at operating temperature of 200 °C, fast response and recovery (3 and 4 s, respectively), and good selectivity to ethanol. The excellent ethanol‐sensing properties endow this In–MOF templated In2O3‐HNR material with a promising application in practical detection of ethanol gas. This method could be extended to the fabrication of other micro/nano structures with well‐defined morphology and composition for high‐performance gas sensing considering diversity of MOFs family.

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Carbonized metal–organic frameworks nanorods as recyclable photocatalyst for visible light-induced water oxidation

Cited by 9 publications

References 11 publications

Boosting Interfacial Polarization Through Heterointerface Engineering in MXene/Graphene Intercalated-Based Microspheres for Electromagnetic Wave Absorption

Boosting Interfacial Polarization Through Heterointerface Engineering in MXene/Graphene Intercalated-Based Microspheres for Electromagnetic Wave Absorption

Recent Advances in Metal–Organic Frameworks Derived Nanocomposites for Photocatalytic Applications in Energy and Environment

Metal‐Organic Frameworks‐Derived Porous In₂O₃ Hollow Nanorod for High‐Performance Ethanol Gas Sensor

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Carbonized metal–organic frameworks nanorods as recyclable photocatalyst for visible light-induced water oxidation

Cited by 9 publications

References 11 publications

Boosting Interfacial Polarization Through Heterointerface Engineering in MXene/Graphene Intercalated-Based Microspheres for Electromagnetic Wave Absorption

Boosting Interfacial Polarization Through Heterointerface Engineering in MXene/Graphene Intercalated-Based Microspheres for Electromagnetic Wave Absorption

Recent Advances in Metal–Organic Frameworks Derived Nanocomposites for Photocatalytic Applications in Energy and Environment

Metal‐Organic Frameworks‐Derived Porous In2O3 Hollow Nanorod for High‐Performance Ethanol Gas Sensor

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Metal‐Organic Frameworks‐Derived Porous In₂O₃ Hollow Nanorod for High‐Performance Ethanol Gas Sensor