姬广斌

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教授 博士生导师

招生学科专业:
化学 -- 【招收硕士研究生】 -- 材料科学与技术学院
材料科学与工程 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
材料与化工 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
能源动力 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院

性别:男

学历:南京大学

学位:理学博士学位

所在单位:材料科学与技术学院

办公地点:江宁校区1号楼14楼408A

联系方式:18005152399

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A facile self-template strategy for synthesizing 1D porous Ni@C nanorods towards efficient microwave absorption

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所属单位:材料科学与技术学院

发表刊物:NANOTECHNOLOGY

关键字:nanorod Ni@C porous core-shell microwave absorbing

摘要:Ni@C composites, which simultaneously possess porous, core-shell and 1D nanostructures have been synthesized with a facile self-template strategy. The precursors were obtained by a hydrothermal process using NiCl2 . 6H(2)O and nitrilotriacetic acid as the starting material and then annealed at 400 degrees C, 500 degrees C, and 600 degrees C. The Ni@C composites annealed at 500 degrees C display a nanorod feature with a length of similar to 3 mu m and diameter of 230-500 nm. In addition, about 3 nm carbon shells and 4 nm Ni cores can be found in Ni@C nanorods. Attributed to the interconnected mesoporous texture in nanorods, strengthened interfacial polarization from core-shell structure, and better impedance matching benefiting from a great deal of pores, Ni@C nanorod composites exhibit perfect microwave absorption performance. The minimum reflection loss (RL) value of -26.3 dB can be gained at 10.8 GHz with a thickness of 2.3mm. Moreover, the effective bandwidth (RL <= -10 dB) can be achieved, 5.2 GHz (12.24-17.4GHz) under an absorber thickness of 1.8mm, indicating its great potential in the microwave absorption field. Considering this technique is facile and effective, our study may provide a good reference for the synthesis of 1D carbon-based microwave absorbers with core-shell nanostructure.

ISSN号:0957-4484

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发表时间:2017-03-17

合写作者:张亚男,张兴淼,权斌,梁小会,刘伟,刘伟,都有为

通讯作者:姬广斌