Preparation and characterization of microwave absorbing composite materials with GSs or FeCo/GS composites
[Display omitted] •It is found that adding GSs or FeCo/GSs composite into the sample SiC/NR can greatly increase RL and the absorbing peak shifts to low-frequency with increasing the adding amount.•The optimum adding amount of GSs is 2%. The sample GS-200-2% possesses the lowest RL value of −31.27 d...
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| creator | Li, Jin-Shuh Hsu, Ting-Chia Hwang, Chyi-Ching Lu, Kai-Tai Yeh, Tsao-Fa |
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•It is found that adding GSs or FeCo/GSs composite into the sample SiC/NR can greatly increase RL and the absorbing peak shifts to low-frequency with increasing the adding amount.•The optimum adding amount of GSs is 2%. The sample GS-200-2% possesses the lowest RL value of −31.27 dB at 7.6 GHz.•The optimum adding amount of FeCo/GSs composite is 3%. The sample AGS-450-3% possesses the lowest RL value of −20.67 dB at 7.8 GHz.
This study mainly explored the synthesis method of graphene sheets (GSs) and FeCo/graphene sheet (FeCo/GS) composites and evaluated the microwave absorbing characteristics of composite materials containing GSs or FeCo/GS composites. First, graphite oxide (GO) was synthesized by the modified Hummers method. The synthesized GO was further used to synthesize GSs and FeCo/GS composites. Afterward, GSs or FeCo/GS composites were mixed with silicon carbide (SiC) and natural rubber (NR) to prepare microwave absorbing materials with thicknesses of 2 mm. Finally, identification and characterization of these samples were performed by XRD, FE-SEM, TEM, TGA, ESCA, RS, AFM and VNA. GSs were synthesized successfully at a low annealing temperature of 200 °C, and their thicknesses were between 0.848 nm and 2.115 nm, which corresponds to 2–6 stacked layers of graphene. FeCo/GS composites were also synthesized successfully at three different annealing temperatures. The nanoparticles of metals and metal oxides were well-dispersed on the surfaces of and the spaces between GSs. It was found that adding GSs or FeCo/GS composites into the SiC/NR sample can greatly increase reflection loss (RL) and that the absorbing peak shifts to lower frequencies as the concentration of added particles increases. The optimum concentration of added GSs was 2 wt.%. The GS-200-2% sample possessed the lowest RL value of −31.27 dB at 7.6 GHz. The optimum concentration of added FeCo/GS composites was 3 wt.%. The AGS-450-3% sample possessed the lowest RL value of −20.67 dB at 7.8 GHz. |
| doi_str_mv | 10.1016/j.materresbull.2018.07.028 |
| format | Article |
| fullrecord | <record><control><sourceid>elsevier_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_22805298</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0025540817343891</els_id><sourcerecordid>S0025540817343891</sourcerecordid><originalsourceid>FETCH-LOGICAL-c389t-3b1b931f0efb135eb3a8e9f8423d88ddeb765a64128551efe04552c8e0961a2e3</originalsourceid><addsrcrecordid>eNqNUF1LwzAUDaLgnP6HoM_tbtKmTX2T6aYwUJg-hzS9dSlbM5I60V9v5gR99OlyL-fjnkPIJYOUASsmXbrRA3qPoX5br1MOTKZQpsDlERkxWWZJznl5TEYAXCQiB3lKzkLoACCXZTki3ZPHrfZ6sK6num-oWcXNRE37eTi6lm6s8e5d75DqOjhf2_6VGrfZumAHpN8fWL0O9N0OKzpfBuo8neHUTebLX1w4JydtROHFzxyTl9nd8_Q-WTzOH6Y3i8RkshqSrGZ1lbEWsK1ZJrDOtMSqlTnPGimbBuuyELrIGZdCMGwRciG4kQhVwTTHbEyuDrouDFYFE73Nyri-RzMoziUIXsmIuj6gYrQQPLZq6-1G-w_FQO27VZ36263ad6ugVLHbSL49kDHm2Fn0exvsDTbW710aZ_8j8wXrPovP</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Preparation and characterization of microwave absorbing composite materials with GSs or FeCo/GS composites</title><source>Access via ScienceDirect (Elsevier)</source><creator>Li, Jin-Shuh ; Hsu, Ting-Chia ; Hwang, Chyi-Ching ; Lu, Kai-Tai ; Yeh, Tsao-Fa</creator><creatorcontrib>Li, Jin-Shuh ; Hsu, Ting-Chia ; Hwang, Chyi-Ching ; Lu, Kai-Tai ; Yeh, Tsao-Fa</creatorcontrib><description>[Display omitted]
•It is found that adding GSs or FeCo/GSs composite into the sample SiC/NR can greatly increase RL and the absorbing peak shifts to low-frequency with increasing the adding amount.•The optimum adding amount of GSs is 2%. The sample GS-200-2% possesses the lowest RL value of −31.27 dB at 7.6 GHz.•The optimum adding amount of FeCo/GSs composite is 3%. The sample AGS-450-3% possesses the lowest RL value of −20.67 dB at 7.8 GHz.
This study mainly explored the synthesis method of graphene sheets (GSs) and FeCo/graphene sheet (FeCo/GS) composites and evaluated the microwave absorbing characteristics of composite materials containing GSs or FeCo/GS composites. First, graphite oxide (GO) was synthesized by the modified Hummers method. The synthesized GO was further used to synthesize GSs and FeCo/GS composites. Afterward, GSs or FeCo/GS composites were mixed with silicon carbide (SiC) and natural rubber (NR) to prepare microwave absorbing materials with thicknesses of 2 mm. Finally, identification and characterization of these samples were performed by XRD, FE-SEM, TEM, TGA, ESCA, RS, AFM and VNA. GSs were synthesized successfully at a low annealing temperature of 200 °C, and their thicknesses were between 0.848 nm and 2.115 nm, which corresponds to 2–6 stacked layers of graphene. FeCo/GS composites were also synthesized successfully at three different annealing temperatures. The nanoparticles of metals and metal oxides were well-dispersed on the surfaces of and the spaces between GSs. It was found that adding GSs or FeCo/GS composites into the SiC/NR sample can greatly increase reflection loss (RL) and that the absorbing peak shifts to lower frequencies as the concentration of added particles increases. The optimum concentration of added GSs was 2 wt.%. The GS-200-2% sample possessed the lowest RL value of −31.27 dB at 7.6 GHz. The optimum concentration of added FeCo/GS composites was 3 wt.%. The AGS-450-3% sample possessed the lowest RL value of −20.67 dB at 7.8 GHz.</description><identifier>ISSN: 0025-5408</identifier><identifier>EISSN: 1873-4227</identifier><identifier>DOI: 10.1016/j.materresbull.2018.07.028</identifier><language>eng</language><publisher>United States: Elsevier Ltd</publisher><subject>A. Composite ; ANNEALING ; ATOMIC FORCE MICROSCOPY ; B. Chemical synthesis ; B. Magnetic properties ; C. Atomic force microscopy ; COMPOSITE MATERIALS ; CONCENTRATION RATIO ; D. Dielectric properties ; DIELECTRIC PROPERTIES ; GHZ RANGE ; GRAPHENE ; GRAPHITE ; LAYERS ; MAGNETIC PROPERTIES ; MATERIALS SCIENCE ; MICROWAVE RADIATION ; NANOPARTICLES ; NATURAL RUBBER ; OXIDES ; REFLECTION ; SCANNING ELECTRON MICROSCOPY ; SHEETS ; SILICON CARBIDES ; SYNTHESIS ; THERMAL GRAVIMETRIC ANALYSIS ; THICKNESS ; TRANSMISSION ELECTRON MICROSCOPY ; X-RAY DIFFRACTION ; X-RAY PHOTOELECTRON SPECTROSCOPY</subject><ispartof>Materials research bulletin, 2018-11, Vol.107, p.218-224</ispartof><rights>2018 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c389t-3b1b931f0efb135eb3a8e9f8423d88ddeb765a64128551efe04552c8e0961a2e3</citedby><cites>FETCH-LOGICAL-c389t-3b1b931f0efb135eb3a8e9f8423d88ddeb765a64128551efe04552c8e0961a2e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.materresbull.2018.07.028$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22805298$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Jin-Shuh</creatorcontrib><creatorcontrib>Hsu, Ting-Chia</creatorcontrib><creatorcontrib>Hwang, Chyi-Ching</creatorcontrib><creatorcontrib>Lu, Kai-Tai</creatorcontrib><creatorcontrib>Yeh, Tsao-Fa</creatorcontrib><title>Preparation and characterization of microwave absorbing composite materials with GSs or FeCo/GS composites</title><title>Materials research bulletin</title><description>[Display omitted]
•It is found that adding GSs or FeCo/GSs composite into the sample SiC/NR can greatly increase RL and the absorbing peak shifts to low-frequency with increasing the adding amount.•The optimum adding amount of GSs is 2%. The sample GS-200-2% possesses the lowest RL value of −31.27 dB at 7.6 GHz.•The optimum adding amount of FeCo/GSs composite is 3%. The sample AGS-450-3% possesses the lowest RL value of −20.67 dB at 7.8 GHz.
This study mainly explored the synthesis method of graphene sheets (GSs) and FeCo/graphene sheet (FeCo/GS) composites and evaluated the microwave absorbing characteristics of composite materials containing GSs or FeCo/GS composites. First, graphite oxide (GO) was synthesized by the modified Hummers method. The synthesized GO was further used to synthesize GSs and FeCo/GS composites. Afterward, GSs or FeCo/GS composites were mixed with silicon carbide (SiC) and natural rubber (NR) to prepare microwave absorbing materials with thicknesses of 2 mm. Finally, identification and characterization of these samples were performed by XRD, FE-SEM, TEM, TGA, ESCA, RS, AFM and VNA. GSs were synthesized successfully at a low annealing temperature of 200 °C, and their thicknesses were between 0.848 nm and 2.115 nm, which corresponds to 2–6 stacked layers of graphene. FeCo/GS composites were also synthesized successfully at three different annealing temperatures. The nanoparticles of metals and metal oxides were well-dispersed on the surfaces of and the spaces between GSs. It was found that adding GSs or FeCo/GS composites into the SiC/NR sample can greatly increase reflection loss (RL) and that the absorbing peak shifts to lower frequencies as the concentration of added particles increases. The optimum concentration of added GSs was 2 wt.%. The GS-200-2% sample possessed the lowest RL value of −31.27 dB at 7.6 GHz. The optimum concentration of added FeCo/GS composites was 3 wt.%. The AGS-450-3% sample possessed the lowest RL value of −20.67 dB at 7.8 GHz.</description><subject>A. Composite</subject><subject>ANNEALING</subject><subject>ATOMIC FORCE MICROSCOPY</subject><subject>B. Chemical synthesis</subject><subject>B. Magnetic properties</subject><subject>C. Atomic force microscopy</subject><subject>COMPOSITE MATERIALS</subject><subject>CONCENTRATION RATIO</subject><subject>D. Dielectric properties</subject><subject>DIELECTRIC PROPERTIES</subject><subject>GHZ RANGE</subject><subject>GRAPHENE</subject><subject>GRAPHITE</subject><subject>LAYERS</subject><subject>MAGNETIC PROPERTIES</subject><subject>MATERIALS SCIENCE</subject><subject>MICROWAVE RADIATION</subject><subject>NANOPARTICLES</subject><subject>NATURAL RUBBER</subject><subject>OXIDES</subject><subject>REFLECTION</subject><subject>SCANNING ELECTRON MICROSCOPY</subject><subject>SHEETS</subject><subject>SILICON CARBIDES</subject><subject>SYNTHESIS</subject><subject>THERMAL GRAVIMETRIC ANALYSIS</subject><subject>THICKNESS</subject><subject>TRANSMISSION ELECTRON MICROSCOPY</subject><subject>X-RAY DIFFRACTION</subject><subject>X-RAY PHOTOELECTRON SPECTROSCOPY</subject><issn>0025-5408</issn><issn>1873-4227</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqNUF1LwzAUDaLgnP6HoM_tbtKmTX2T6aYwUJg-hzS9dSlbM5I60V9v5gR99OlyL-fjnkPIJYOUASsmXbrRA3qPoX5br1MOTKZQpsDlERkxWWZJznl5TEYAXCQiB3lKzkLoACCXZTki3ZPHrfZ6sK6num-oWcXNRE37eTi6lm6s8e5d75DqOjhf2_6VGrfZumAHpN8fWL0O9N0OKzpfBuo8neHUTebLX1w4JydtROHFzxyTl9nd8_Q-WTzOH6Y3i8RkshqSrGZ1lbEWsK1ZJrDOtMSqlTnPGimbBuuyELrIGZdCMGwRciG4kQhVwTTHbEyuDrouDFYFE73Nyri-RzMoziUIXsmIuj6gYrQQPLZq6-1G-w_FQO27VZ36263ad6ugVLHbSL49kDHm2Fn0exvsDTbW710aZ_8j8wXrPovP</recordid><startdate>20181101</startdate><enddate>20181101</enddate><creator>Li, Jin-Shuh</creator><creator>Hsu, Ting-Chia</creator><creator>Hwang, Chyi-Ching</creator><creator>Lu, Kai-Tai</creator><creator>Yeh, Tsao-Fa</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20181101</creationdate><title>Preparation and characterization of microwave absorbing composite materials with GSs or FeCo/GS composites</title><author>Li, Jin-Shuh ; Hsu, Ting-Chia ; Hwang, Chyi-Ching ; Lu, Kai-Tai ; Yeh, Tsao-Fa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c389t-3b1b931f0efb135eb3a8e9f8423d88ddeb765a64128551efe04552c8e0961a2e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>A. Composite</topic><topic>ANNEALING</topic><topic>ATOMIC FORCE MICROSCOPY</topic><topic>B. Chemical synthesis</topic><topic>B. Magnetic properties</topic><topic>C. Atomic force microscopy</topic><topic>COMPOSITE MATERIALS</topic><topic>CONCENTRATION RATIO</topic><topic>D. Dielectric properties</topic><topic>DIELECTRIC PROPERTIES</topic><topic>GHZ RANGE</topic><topic>GRAPHENE</topic><topic>GRAPHITE</topic><topic>LAYERS</topic><topic>MAGNETIC PROPERTIES</topic><topic>MATERIALS SCIENCE</topic><topic>MICROWAVE RADIATION</topic><topic>NANOPARTICLES</topic><topic>NATURAL RUBBER</topic><topic>OXIDES</topic><topic>REFLECTION</topic><topic>SCANNING ELECTRON MICROSCOPY</topic><topic>SHEETS</topic><topic>SILICON CARBIDES</topic><topic>SYNTHESIS</topic><topic>THERMAL GRAVIMETRIC ANALYSIS</topic><topic>THICKNESS</topic><topic>TRANSMISSION ELECTRON MICROSCOPY</topic><topic>X-RAY DIFFRACTION</topic><topic>X-RAY PHOTOELECTRON SPECTROSCOPY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Jin-Shuh</creatorcontrib><creatorcontrib>Hsu, Ting-Chia</creatorcontrib><creatorcontrib>Hwang, Chyi-Ching</creatorcontrib><creatorcontrib>Lu, Kai-Tai</creatorcontrib><creatorcontrib>Yeh, Tsao-Fa</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Materials research bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Jin-Shuh</au><au>Hsu, Ting-Chia</au><au>Hwang, Chyi-Ching</au><au>Lu, Kai-Tai</au><au>Yeh, Tsao-Fa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation and characterization of microwave absorbing composite materials with GSs or FeCo/GS composites</atitle><jtitle>Materials research bulletin</jtitle><date>2018-11-01</date><risdate>2018</risdate><volume>107</volume><spage>218</spage><epage>224</epage><pages>218-224</pages><issn>0025-5408</issn><eissn>1873-4227</eissn><abstract>[Display omitted]
•It is found that adding GSs or FeCo/GSs composite into the sample SiC/NR can greatly increase RL and the absorbing peak shifts to low-frequency with increasing the adding amount.•The optimum adding amount of GSs is 2%. The sample GS-200-2% possesses the lowest RL value of −31.27 dB at 7.6 GHz.•The optimum adding amount of FeCo/GSs composite is 3%. The sample AGS-450-3% possesses the lowest RL value of −20.67 dB at 7.8 GHz.
This study mainly explored the synthesis method of graphene sheets (GSs) and FeCo/graphene sheet (FeCo/GS) composites and evaluated the microwave absorbing characteristics of composite materials containing GSs or FeCo/GS composites. First, graphite oxide (GO) was synthesized by the modified Hummers method. The synthesized GO was further used to synthesize GSs and FeCo/GS composites. Afterward, GSs or FeCo/GS composites were mixed with silicon carbide (SiC) and natural rubber (NR) to prepare microwave absorbing materials with thicknesses of 2 mm. Finally, identification and characterization of these samples were performed by XRD, FE-SEM, TEM, TGA, ESCA, RS, AFM and VNA. GSs were synthesized successfully at a low annealing temperature of 200 °C, and their thicknesses were between 0.848 nm and 2.115 nm, which corresponds to 2–6 stacked layers of graphene. FeCo/GS composites were also synthesized successfully at three different annealing temperatures. The nanoparticles of metals and metal oxides were well-dispersed on the surfaces of and the spaces between GSs. It was found that adding GSs or FeCo/GS composites into the SiC/NR sample can greatly increase reflection loss (RL) and that the absorbing peak shifts to lower frequencies as the concentration of added particles increases. The optimum concentration of added GSs was 2 wt.%. The GS-200-2% sample possessed the lowest RL value of −31.27 dB at 7.6 GHz. The optimum concentration of added FeCo/GS composites was 3 wt.%. The AGS-450-3% sample possessed the lowest RL value of −20.67 dB at 7.8 GHz.</abstract><cop>United States</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.materresbull.2018.07.028</doi><tpages>7</tpages></addata></record> |
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| subjects | A. Composite ANNEALING ATOMIC FORCE MICROSCOPY B. Chemical synthesis B. Magnetic properties C. Atomic force microscopy COMPOSITE MATERIALS CONCENTRATION RATIO D. Dielectric properties DIELECTRIC PROPERTIES GHZ RANGE GRAPHENE GRAPHITE LAYERS MAGNETIC PROPERTIES MATERIALS SCIENCE MICROWAVE RADIATION NANOPARTICLES NATURAL RUBBER OXIDES REFLECTION SCANNING ELECTRON MICROSCOPY SHEETS SILICON CARBIDES SYNTHESIS THERMAL GRAVIMETRIC ANALYSIS THICKNESS TRANSMISSION ELECTRON MICROSCOPY X-RAY DIFFRACTION X-RAY PHOTOELECTRON SPECTROSCOPY |
| title | Preparation and characterization of microwave absorbing composite materials with GSs or FeCo/GS composites |
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