In-Situ Conversion of ZnO/Ni3ZnC0.7/CNT Composite from NiZn Bimetallic MOF Precursor with Enhanced Electromagnetic Property

Huang, Lina; Huang, Shaolong; Yang, Wenlong; Zhao, Ailun; Li, Chengxiang; Lü, Jianguo; Ruan, Shuangchen; Zeng, Yu‐Jia

doi:10.3390/nano8080600

Cited by 38 publications

(19 citation statements)

References 43 publications

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“…Moreover, even if assuming the emission was from interfacial defects, such interfacial defects could also lead to a preferential channeling of the energetic electrons to reach the MOF component of the hybrid structure, enhancing the separation efficiency of photoinduced charge carriers. [ 22 ] Meanwhile, as for the 3D nanostructure of ZnO/Zn‐MOF/CdS, the covalent interaction between ZnO and CdS was enhanced by the in situ growth of Zn‐MOF. [ 20 ] Thus, the direct surface recombination of electron–hole pairs was suppressed.…”

Section: Resultsmentioning

confidence: 99%

Portable Dual‐Modular Immunosensor Constructed from Bimetallic Metal–Organic Framework Heterostructure Grafted with Enzyme‐Mimicking Label for Rosiglitazone Detection

Qileng

Liu

Sun

et al. 2022

Adv Funct Materials

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Immunosensor with photoelectrochemistry and fluorescence responsibility is widely used in biomedical detection, health monitoring, and food safety inspection. The cumbersome configuration and low integration of the current immunosensors, however, have brought challenges for their practical applications. To address these challenges, a portable and phone-APP controlled dual-modular immunosensor based on a bimetallic metal-organic framework (MOF) heterostructured photoelectrode, ZnO/NiZn-MOF/CdS, grafted with an enzyme-mimicking Au@CuO/Cu 2 O label is constructed to achieve simultaneous photoelectrochemistry and fluorescence signage. In the electrode design, the construction of a bimetallic NiZn metal-organic framework (NiZn-MOF) into the common ZnO/CdS photoresponsive structure achieves significant and stable photocurrent output under a very low-power LED light source for not only accelerating the transfer of photogenerated electrons from CdS to ZnO, but also stabilizing the holes of CdS to improve its photocorrosion resistance. After the graft of multifunctional enzyme-mimicking Au@CuO/Cu 2 O label clusters, a portable dual-modular immunosensor is built for the detection of rosiglitazone, a common antidiabetic drug and strictly restricted food residual, over a range from 10 −3 to 1 µg L −1 . This MOF-based immunosensor offers insights into highly sensitive dual-modular responsive material innovations and provides miniaturized biomedical detectors with promising commercialization potentials.

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Section: Resultsmentioning

confidence: 99%

Portable Dual‐Modular Immunosensor Constructed from Bimetallic Metal–Organic Framework Heterostructure Grafted with Enzyme‐Mimicking Label for Rosiglitazone Detection

Qileng

Liu

Sun

et al. 2022

Adv Funct Materials

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“…These defects could be regarded as dipoles for the conversion of electromagnetic energy into thermal energy due to the orientational relaxation process excited by the alternating electromagnetic field. 49 Meanwhile, under the alternating electromagnetic field, the electrons gained sufficient energy transfer and accumulate on the heterointerface. A large number of accumulated space charges would undergo Debye relaxation processes, to achieve the purpose of attenuating incident electromagnetic waves.…”

Section: Acs Appliedmentioning

confidence: 99%

Ni/C-Carbon Nanotube Multidimensional Heterospheres for Highly Efficient Microwave Absorbers

Liu

Wang

Sun

et al. 2022

ACS Appl. Nano Mater.

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For microwave absorbers, it is still a tremendous challenge to efficiently construct multidimensional heterostructures for achieving the synergy of multicomponent and multiloss modes. Herein, a kind of cocklebur-like Ni/C-CNT multidimensional heterosphere was obtained by a simple method with graphitic carbon nitride (g-C 3 N 4 ) and nickel oxide (NiO) as precursors.During the decomposition of g-C 3 N 4 at high temperatures, the vertical CNTs and amorphous carbon were produced on the surface of Ni nanoparticles reduced from NiO. It was found that the conductive network consisting of CNTs and heterospheres not only increased the conduction loss but also facilitated multiple reflection absorption. Moreover, the cocklebur-like heterostructures had many defects and interfaces, effectively realizing the synergistic effect of various loss mechanisms including conduction loss, interface polarization, and dipole polarization. In addition, this cocklebur-like multidimensional heterostructure was beneficial to improve the impedance matching of materials. Accordingly, with a filler loading of 30 wt %, the minimum reflection loss of Ni/C-CNT heterospheres was up to −41.60 dB, and the effective absorption bandwidth reached 4.1 GHz when the matching thickness was 2.4 mm. This work proposed a strategy for fabricating carbon nanotube-based composites with multidimensional heterostructures as efficient microwave absorbers.

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“…[ 167 ] In addition, the multiple scattering and reflection of electromagnetic waves in carbon nanotubes also improve the microwave absorption properties of the material. For instance, Huang et al [ 168 ] synthesized an urchin‐like ZnO/Ni 3 ZnC 0.7 /CNT composite by a facile thermal decomposition based on Ni‐Zn‐MOFs. The experimental results showed that the chemical states of the components and the microwave absorption properties of the hybrid materials can be adjusted by changing the content of multiwall carbon nanotubes (MWCNT).…”

Section: Mofs Derived Carbon‐based Composite Microwave Absorption Mat...mentioning

confidence: 99%

Research Progress of Metal Organic Frameworks/Carbon‐Based Composites for Microwave Absorption

et al. 2021

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In-Situ Conversion of ZnO/Ni3ZnC0.7/CNT Composite from NiZn Bimetallic MOF Precursor with Enhanced Electromagnetic Property

Cited by 38 publications

References 43 publications

Portable Dual‐Modular Immunosensor Constructed from Bimetallic Metal–Organic Framework Heterostructure Grafted with Enzyme‐Mimicking Label for Rosiglitazone Detection

Portable Dual‐Modular Immunosensor Constructed from Bimetallic Metal–Organic Framework Heterostructure Grafted with Enzyme‐Mimicking Label for Rosiglitazone Detection

Ni/C-Carbon Nanotube Multidimensional Heterospheres for Highly Efficient Microwave Absorbers

Research Progress of Metal Organic Frameworks/Carbon‐Based Composites for Microwave Absorption

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