Electromagnetic Wave Absorption Properties of Reduced Graphene Oxide Modified by Maghemite Colloidal Nanoparticle Clusters
Graphene is highly desirable as an electromagnetic wave (EM) absorber because of its large interface, high dielectric loss, and low density. Nevertheless, the conductive and electromagnetic parameters of pure graphene are too high to meet the requirement of impedance match, which results in strong r...
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| Veröffentlicht in: | Journal of physical chemistry. C 2013-09, Vol.117 (38), p.19701-19711 |
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| container_title | Journal of physical chemistry. C |
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| creator | Kong, Luo Yin, Xiaowei Zhang, Yajun Yuan, Xiaoyan Li, Quan Ye, Fang Cheng, Laifei Zhang, Litong |
| description | Graphene is highly desirable as an electromagnetic wave (EM) absorber because of its large interface, high dielectric loss, and low density. Nevertheless, the conductive and electromagnetic parameters of pure graphene are too high to meet the requirement of impedance match, which results in strong reflection and weak absorption. In this paper, we report a facile solvothermal route to synthesize reduced graphene oxide (RGO) nanosheets combined with surface-modified γ-Fe2O3 colloidal nanoparticle clusters. The obtained two-dimensional hybrids exhibit a relatively low EM reflection coefficient (RC) and wide effective absorption bandwidth, which are mainly attributed to the unique microstructure of colloidal nanoparticle clusters assembled on RGO. The nanoparticle clusters have more interfaces. The interfacial polarization within nanoparticle clusters and conductivity loss of RGO plays an important role in absorbing EM power. The minimum RC reaches −59.65 dB at 10.09 GHz with a matching thickness of 2.5 mm. The special integration of some metal oxide semiconductor crystals assembled on RGO sheets provides an effective avenue to design metal oxide semiconductor/carbon hybrids as EM absorbing materials. |
| doi_str_mv | 10.1021/jp4058498 |
| format | Article |
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Nevertheless, the conductive and electromagnetic parameters of pure graphene are too high to meet the requirement of impedance match, which results in strong reflection and weak absorption. In this paper, we report a facile solvothermal route to synthesize reduced graphene oxide (RGO) nanosheets combined with surface-modified γ-Fe2O3 colloidal nanoparticle clusters. The obtained two-dimensional hybrids exhibit a relatively low EM reflection coefficient (RC) and wide effective absorption bandwidth, which are mainly attributed to the unique microstructure of colloidal nanoparticle clusters assembled on RGO. The nanoparticle clusters have more interfaces. The interfacial polarization within nanoparticle clusters and conductivity loss of RGO plays an important role in absorbing EM power. The minimum RC reaches −59.65 dB at 10.09 GHz with a matching thickness of 2.5 mm. 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C</title><addtitle>J. Phys. Chem. C</addtitle><description>Graphene is highly desirable as an electromagnetic wave (EM) absorber because of its large interface, high dielectric loss, and low density. Nevertheless, the conductive and electromagnetic parameters of pure graphene are too high to meet the requirement of impedance match, which results in strong reflection and weak absorption. In this paper, we report a facile solvothermal route to synthesize reduced graphene oxide (RGO) nanosheets combined with surface-modified γ-Fe2O3 colloidal nanoparticle clusters. The obtained two-dimensional hybrids exhibit a relatively low EM reflection coefficient (RC) and wide effective absorption bandwidth, which are mainly attributed to the unique microstructure of colloidal nanoparticle clusters assembled on RGO. The nanoparticle clusters have more interfaces. The interfacial polarization within nanoparticle clusters and conductivity loss of RGO plays an important role in absorbing EM power. The minimum RC reaches −59.65 dB at 10.09 GHz with a matching thickness of 2.5 mm. The special integration of some metal oxide semiconductor crystals assembled on RGO sheets provides an effective avenue to design metal oxide semiconductor/carbon hybrids as EM absorbing materials.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>Electronic transport in multilayers, nanoscale materials and structures</subject><subject>Exact sciences and technology</subject><subject>Fullerenes and related materials; diamonds, graphite</subject><subject>Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties</subject><subject>Materials science</subject><subject>Nanocrystalline materials</subject><subject>Nanoscale materials and structures: fabrication and characterization</subject><subject>Physics</subject><subject>Specific materials</subject><subject>Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)</subject><issn>1932-7447</issn><issn>1932-7455</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNptkE1Lw0AQhoMoWKsH_8FePHiI7kfSTY6laBVaK6J4DJPd2XbLNht2U7H-eiOVevE0w8szD8ybJJeM3jDK2e26zWheZGVxlAxYKXgqszw_PuyZPE3OYlxTmgvKxCD5unOouuA3sGyws4q8wweScR19aDvrG_IcfIuhsxiJN-QF9VahJtMA7QobJItPq5HMvbbG9nm9I3NYrnBjOyQT75y3Ghx5gsa30FuU62O3jR2GeJ6cGHARL37nMHm7v3udPKSzxfRxMp6lwIuyS2uRUSrLmkvGNRS0pLIAUJDrWiItGKCoTVYLbnIjtcgRRC71aFQILDNuajFMrvdeFXyMAU3VBruBsKsYrX5Kqw6l9ezVnm0hKnAmQKNsPBxwKYuMMfnHgYrV2m9D03_wj-8bFTl6Aw</recordid><startdate>20130926</startdate><enddate>20130926</enddate><creator>Kong, Luo</creator><creator>Yin, Xiaowei</creator><creator>Zhang, Yajun</creator><creator>Yuan, Xiaoyan</creator><creator>Li, Quan</creator><creator>Ye, Fang</creator><creator>Cheng, Laifei</creator><creator>Zhang, Litong</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20130926</creationdate><title>Electromagnetic Wave Absorption Properties of Reduced Graphene Oxide Modified by Maghemite Colloidal Nanoparticle Clusters</title><author>Kong, Luo ; Yin, Xiaowei ; Zhang, Yajun ; Yuan, Xiaoyan ; Li, Quan ; Ye, Fang ; Cheng, Laifei ; Zhang, Litong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a289t-b340079b2712da809078aaca5db7e081ae3bf4b32f5f7d35ea357d6683e942fb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</topic><topic>Electronic transport in multilayers, nanoscale materials and structures</topic><topic>Exact sciences and technology</topic><topic>Fullerenes and related materials; diamonds, graphite</topic><topic>Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties</topic><topic>Materials science</topic><topic>Nanocrystalline materials</topic><topic>Nanoscale materials and structures: fabrication and characterization</topic><topic>Physics</topic><topic>Specific materials</topic><topic>Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kong, Luo</creatorcontrib><creatorcontrib>Yin, Xiaowei</creatorcontrib><creatorcontrib>Zhang, Yajun</creatorcontrib><creatorcontrib>Yuan, Xiaoyan</creatorcontrib><creatorcontrib>Li, Quan</creatorcontrib><creatorcontrib>Ye, Fang</creatorcontrib><creatorcontrib>Cheng, Laifei</creatorcontrib><creatorcontrib>Zhang, Litong</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of physical chemistry. C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kong, Luo</au><au>Yin, Xiaowei</au><au>Zhang, Yajun</au><au>Yuan, Xiaoyan</au><au>Li, Quan</au><au>Ye, Fang</au><au>Cheng, Laifei</au><au>Zhang, Litong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electromagnetic Wave Absorption Properties of Reduced Graphene Oxide Modified by Maghemite Colloidal Nanoparticle Clusters</atitle><jtitle>Journal of physical chemistry. C</jtitle><addtitle>J. Phys. Chem. C</addtitle><date>2013-09-26</date><risdate>2013</risdate><volume>117</volume><issue>38</issue><spage>19701</spage><epage>19711</epage><pages>19701-19711</pages><issn>1932-7447</issn><eissn>1932-7455</eissn><abstract>Graphene is highly desirable as an electromagnetic wave (EM) absorber because of its large interface, high dielectric loss, and low density. Nevertheless, the conductive and electromagnetic parameters of pure graphene are too high to meet the requirement of impedance match, which results in strong reflection and weak absorption. In this paper, we report a facile solvothermal route to synthesize reduced graphene oxide (RGO) nanosheets combined with surface-modified γ-Fe2O3 colloidal nanoparticle clusters. The obtained two-dimensional hybrids exhibit a relatively low EM reflection coefficient (RC) and wide effective absorption bandwidth, which are mainly attributed to the unique microstructure of colloidal nanoparticle clusters assembled on RGO. The nanoparticle clusters have more interfaces. The interfacial polarization within nanoparticle clusters and conductivity loss of RGO plays an important role in absorbing EM power. The minimum RC reaches −59.65 dB at 10.09 GHz with a matching thickness of 2.5 mm. The special integration of some metal oxide semiconductor crystals assembled on RGO sheets provides an effective avenue to design metal oxide semiconductor/carbon hybrids as EM absorbing materials.</abstract><cop>Columbus, OH</cop><pub>American Chemical Society</pub><doi>10.1021/jp4058498</doi><tpages>11</tpages></addata></record> |
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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic transport in multilayers, nanoscale materials and structures Exact sciences and technology Fullerenes and related materials diamonds, graphite Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Physics Specific materials Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) |
| title | Electromagnetic Wave Absorption Properties of Reduced Graphene Oxide Modified by Maghemite Colloidal Nanoparticle Clusters |
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