Synthesis of microporous Ni/NiO nanoparticles with enhanced microwave   absorption properties

doi:10.1016/j.jallcom.2016.01.175

CORC > 北京大学 > 化学与分子工程学院

	Synthesis of microporous Ni/NiO nanoparticles with enhanced microwave absorption properties
	Liu, Tong ; Pang, Yu ; Xie, Xiubo ; Qi, Wen ; Wu, Ying ; Kobayashi, Satoru ; Zheng, Jie ; Li, Xingguo
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2016
关键词	Nickel Microporous nanoparticles Core/shell structure Microwave absorption ELECTROMAGNETIC-WAVE ABSORBERS ATOMIC LAYER DEPOSITION MAGNETITE NANOPARTICLES FORMATION MECHANISM ASPECT-RATIO CARBON PERFORMANCE PARTICLES ALLOYS NICKEL
DOI	10.1016/j.jallcom.2016.01.175
英文摘要	The fabrication of microporous metal materials with many potential applications is challenging due to their high chemical activities and the difficulty in controlling the pore size. By adjusting the reaction condition and the composition of the Ni-Al nanoparticle precursor, we have successfully produced the microporous Ni nanoparticles (NPs) of 22 nm by chemical dealloying method. During the passivation process, the microporous Ni NPs covered with NiO shell are generated as the result of surface oxidation. The micropores range from 0.6 to 1.2 nm in diameter with a large surface area of 68.9 m(2)/g. Due to the elimination of Al atoms during dealloying process, the crystalline size of the microporous Ni NPs is sharply decreased to 2-5 nm. The specific architecture offers the microporous Ni/NiO NPs a small microwave reflection coefficient (RC) and a wide absorption bandwidth (RC <= -10 dB) of -49.1 dB and 5.8 GHz, much better than the nonporous counterpart of -24.1 dB and 3.7 GHz. The enhanced microwave absorption performance has been interpreted in terms of the micropore structure, core/shell structure and nanostructure effects. (C) 2016 Elsevier B.V. All rights reserved.; National Natural Science Foundation of China [U1560106]; Aeronautical Science Foundation of China [2014ZF51069]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; SCI(E); EI; ARTICLE; tongliu@buaa.edu.cn; 287-296; 667
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437258]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Liu, Tong,Pang, Yu,Xie, Xiubo,et al. Synthesis of microporous Ni/NiO nanoparticles with enhanced microwave absorption properties[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016.
APA	Liu, Tong.,Pang, Yu.,Xie, Xiubo.,Qi, Wen.,Wu, Ying.,...&Li, Xingguo.(2016).Synthesis of microporous Ni/NiO nanoparticles with enhanced microwave absorption properties.JOURNAL OF ALLOYS AND COMPOUNDS.
MLA	Liu, Tong,et al."Synthesis of microporous Ni/NiO nanoparticles with enhanced microwave absorption properties".JOURNAL OF ALLOYS AND COMPOUNDS (2016).