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Absorption Property

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Yujin Chen – One of the best experts on this subject based on the ideXlab platform.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Feng Yan, Chunling Zhu, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • an ultra small nife2o4 hollow particle graphene hybrid fabrication and electromagnetic wave Absorption Property
    Nanoscale, 2018
    Co-Authors: Shen Zhang, Xitian Zhang, Chunyan Li, Yujin Chen
    Abstract:

    Herein, ultra-small NiFe2O4 hollow particles, with the diameter and wall thickness of only 6 and 1.8 nm, respectively, were anchored on a graphene surface based on the nanoscale Kirkendall effect. The hybrid exhibits an excellent electromagnetic wave Absorption Property, comparable or superior to that of most reported absorbers. Our strategy may open a way to grow ultra-small hollow particles on graphene for applications in many fields such as eletromagnetic wave Absorption and energy storage and conversion.

Wancheng Zhou – One of the best experts on this subject based on the ideXlab platform.

  • electromagnetic wave Absorption Property of cr2o3 tio2 coating with frequency selective surface
    Journal of Alloys and Compounds, 2019
    Co-Authors: Zhaoning Yang, Yuchang Qing, Zhibin Huang, Wancheng Zhou
    Abstract:

    Abstract Cr2O3–TiO2 (CrTiO) composite powders were synthesized via high temperature solid-state reaction method. CrTiO coating with different Cr2O3 content were prepared from plasma spraying using CrTiO composite powders as spraying feed respectively. X ray diffraction analysis (XRD) and scanning electron microscopy (SEM) analysis were taken to characterize the phase components and microstructure, respectively. Electromagnetic parameters (including complex permittivity and complex permeability) of CrTiO coating were characterized and studied through a network vector analyzer. Electromagnetic-wave Absorption Property of CrTiO coating with different coating thickness were also examined. Results of XRD show that the main composition of the CrTiO composites are TiO2 and Cr0.12Ti0.78O1.34. Complex permittivity and complex permeability of coating increase with the increase of Cr2O3 content, which is ascribed that the enhancement of carrier concentration, relaxation polarization, electron polarization and magnetic polarization etc. Reflectivity results show that the composite coating displays electromagnetic attenuation at 8.2 GHz–12.4 GHz (generally called the X-band) for 15% Cr2O3 content coating with a sample thickness 1.9 mm. The peak value of the reflection loss reaches −10dB can be achieved at 8.2 GHz–10.2 GHz. Moreover, a frequency selective surface (FSS) coupled by a circular element and four square elements is used to further enhanced the microwave Absorption performance of coating. The results show that the microwave Absorption performance of the absorbing coating mainly depend on the frequency selective surface, Cr2O3 content and thickness of the CrTiO coating. These results imply that CrTiO coating have a potential as microwave absorbing materials for electromagnetism applications.

  • effect of ti3sic2 addition on microwave Absorption Property of ti3sic2 cordierite coatings
    Surface & Coatings Technology, 2015
    Co-Authors: Wancheng Zhou, Yi Liu, Yuchang Qing, Fa Luo, Dongmei Zhu
    Abstract:

    Abstract Ti 3 SiC 2 /cordierite (MAS) composite coatings with different Ti 3 SiC 2 concentrations were prepared via atmosphere plasma spraying (APS) method. The characteristics of the Ti 3 SiC 2 /MAS powders and as-sprayed coatings, such as microstructure, and phase constitution, were observed and measured. The effect of the Ti 3 SiC 2 addition on the electromagnetic shielding, dielectric, and microwave Absorption properties of Ti 3 SiC 2 /MAS coatings in the frequency of 8.2–12.4 GHz was measured and discussed. The addition of Ti 3 SiC 2 can significantly improve the electromagnetic shielding and complex permittivity of the coatings, which can be ascribed to the enhanced polarization effect and electrical conductivity. When the Ti 3 SiC 2 content increases to 30 wt.%, the coating shows an excellent microwave Absorption Property, and the effective Absorption bandwidth (≤−5 dB) can be obtained across the whole measured frequency with a thickness of 1.8 mm. Further increase in Ti 3 SiC 2 content led to high permittivity, which is harmful to the impedance match and results in strong reflection and weak Absorption.

Shen Zhang – One of the best experts on this subject based on the ideXlab platform.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Feng Yan, Chunling Zhu, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • an ultra small nife2o4 hollow particle graphene hybrid fabrication and electromagnetic wave Absorption Property
    Nanoscale, 2018
    Co-Authors: Shen Zhang, Xitian Zhang, Chunyan Li, Yujin Chen
    Abstract:

    Herein, ultra-small NiFe2O4 hollow particles, with the diameter and wall thickness of only 6 and 1.8 nm, respectively, were anchored on a graphene surface based on the nanoscale Kirkendall effect. The hybrid exhibits an excellent electromagnetic wave Absorption Property, comparable or superior to that of most reported absorbers. Our strategy may open a way to grow ultra-small hollow particles on graphene for applications in many fields such as eletromagnetic wave Absorption and energy storage and conversion.

Xitian Zhang – One of the best experts on this subject based on the ideXlab platform.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Feng Yan, Chunling Zhu, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • an ultra small nife2o4 hollow particle graphene hybrid fabrication and electromagnetic wave Absorption Property
    Nanoscale, 2018
    Co-Authors: Shen Zhang, Xitian Zhang, Chunyan Li, Yujin Chen
    Abstract:

    Herein, ultra-small NiFe2O4 hollow particles, with the diameter and wall thickness of only 6 and 1.8 nm, respectively, were anchored on a graphene surface based on the nanoscale Kirkendall effect. The hybrid exhibits an excellent electromagnetic wave Absorption Property, comparable or superior to that of most reported absorbers. Our strategy may open a way to grow ultra-small hollow particles on graphene for applications in many fields such as eletromagnetic wave Absorption and energy storage and conversion.

Xiao Zhang – One of the best experts on this subject based on the ideXlab platform.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.

  • interface induced enhanced electromagnetic wave Absorption Property of metal organic frameworks wrapped by graphene sheets
    Journal of Alloys and Compounds, 2019
    Co-Authors: Xiao Zhang, Shen Zhang, Kun Zhang, Haoran Yuan, Xitian Zhang, Feng Yan, Chunling Zhu, Yujin Chen
    Abstract:

    Abstract Most of metal−organic frameworks (MOFs) themselves have low electrical conductivities, leading to bad electromagnetic wave (EMW) Absorption properties. Herein we found that the EMW Absorption Property of zeolitic imidazolate frameworks-8 (ZIF-8) particles was improved unexpectedly after coupling them with graphene sheets. Experimental results and theoretical calculations indicated that well-defined interfaces between ZIF-8 and the graphene sheets were crucial to the improvement of EMW Absorption Property. Our strategy presented here may open a new way for designing other MOFs based hybrids for high-performance EMW absorbers.