| 钼-钴氧化物中空纳米球/石墨烯复合结构的制备及其电磁性能 |
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| 引用本文： | 许璟珅,卢娜,袁萌伟,孙根班.钼-钴氧化物中空纳米球/石墨烯复合结构的制备及其电磁性能[J].北京师范大学学报(自然科学版),2022,58(4):587-594. |
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| 作者姓名： | 许璟珅 卢娜 袁萌伟 孙根班 |
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| 作者单位： | 1.北京师范大学化学学院，能量转换与存储材料北京市重点实验室，100875，北京 |
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| 基金项目： | 国家自然科学基金资助项目(21771024)；中国博士后科学基金资助项目(2020M680430) |
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| 摘 要： | 利用溶剂热结合煅烧法合成了空心球状的四氧化三钴和钼酸钴的复合氧化物纳米材料（Co3O4-CoMoO4），将其作为磁损耗材料，与石墨烯复合后进行了电磁性能测试，结果显示:复合后的材料具有更好的电磁波吸收能力，在2 mm时最小反射损耗值为?23.45 dB；吸收带宽为2.55 GHz；其有望成为一类具有“薄、强、轻、宽”优异特性的新型吸波材料．
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| 关 键 词： | 四氧化三钴 钼酸钴 石墨烯 电磁波吸收 电磁性能 |
| 收稿时间： | 2022-04-15 |
Mo-Co oxide hollow nanospheres/graphene composites with enhanced electromagnetic performance |
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| Institution: | 1.College of Chemistry, Beijing Normal University, 100875, Beijing, China2.Center for Advanced Materials Research, Beijing Normal University, 519087, Zhuhai, Guangdong, China |
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| Abstract: | Graphene has excellent electrical, optical and mechanical properties．Nano-structured materials composed of Mo-Co composite metal oxides could potentially be applied in electromagnetic wave absorption due to their excellent physical properties．In this paper hollow spherical Co3O4-CoMoO4 composite oxide nanomaterial was synthesized by the solvothermal combined calcination method．Co3O4-CoMoO4 as magnetic loss material was combined with graphene for electromagnetic wave absorption test．The composite material was found to have better electromagnetic wave absorption at 2 mm, with minimum reflection loss at ?23.45 dB, at an absorption bandwidth of 2.55 GHz．This would be a new type of absorbing material with excellent properties． |
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