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  • 文献标题:   Ternary nanocomposites of graphene@SiO2@NiO nanoflowers: synthesis and their microwave electromagnetic properties
  • 文献类型:   Article
  • 作　　者:   WANG L, HUANG Y, DING X, LIU PB, ZONG M
  • 作者关键词:   electromagnetic wave absorption, microwave material, nanocomposite, nanofabrication, nickel compound, silicon compound, graphene, graphene ternary nanocomposite, microwave electromagnetic propertie, multistep route, silica nanosheet layer, graphene oxide surface, nio nanoflower growth, microwave absorption property, ternary composite thickness effect, nio nanoflower composite, enhanced microwave absorption, graphene reflection los, maximum absorption, frequency 2 ghz to 18 ghz, size 3 mm, ca sio 2 a nio
  • 出版物名称:   MICRO NANO LETTERS
  • ISSN:  
  • 通讯作者地址:   Northwestern Polytech Univ
  • 被引频次:   3
  • DOI:   10.1049/mnl.2013.0375
  • 出版年:   2013

▎ 摘　　要

The ternary composites of graphene@SiO2@NiO nanoflowers were fabricated by a multi-step route. Graphene oxide (GO)@SiO2 sheets were formed by a layer of silica nanosheets coated on the surface of GO. Then, GO@SiO2 sheets were introduced as substrates for the growth of NiO nanoflowers. The microwave absorption property of the ternary composites was studied in the frequency ranging from 2 to 18 GHz, and the effect of the thickness of the ternary composites on microwave absorption was also investigated. The results indicate that graphene@SiO2@NiO nanoflowers composites exhibit enhanced microwave absorption compared with graphene@SiO2. The reflection loss of graphene@SiO2@NiO nanoflowers below -10 dB is 5 GHz (from 10 to 15 GHz) and the maximum absorption is -20.5 dB at 11.3 GHz with a thickness of 3 mm.