Journal
MATERIALS RESEARCH BULLETIN
Volume 84, Issue -, Pages 445-448Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2016.08.036
Keywords
Nanostructures; Chemical synthesis; Electron microscopy; X-ray diffraction; Dielectric properties
Categories
Funding
- National Natural Science Foundation of China [51271214, 51071139, 50901065, 51102206]
- National Science Fund for Distinguished Young Scholars [51025103]
- Program for New Century Excellent Talents in University [NCET-13-0993]
- Natural Science Foundation of Hebei Province [E2014203144]
- Science Foundation for the Excellent Youth Scholars from Universities and Colleges of Hebei Province [YQ2014009]
- Research Program of the College Science & Technology of Hebei Province [QN2014047]
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Carbon spheres were obtained by hydrothermal synthesis using glucose as carbon source, and then nickel nanoparticles were incorporated on carbon spheres by reducing with hydrogen. The nickel nanoparticles (about 6 nm) with magnetic loss were uniformly dispersed on the surface of carbon spheres (200400 nm) with dielectric loss. The few-layer graphene have been obtained on the carbon spheres by nickel catalysis. The minimum reflection loss value of -20.3 dB was observed at 14.4 GHz with a matching thickness of 9.0 mm for 40 wt.% composites. The nickel nanoparticles incorporated carbon spheres are a promising candidate for excellent microwave absorption materials. (C) 2016 Elsevier Ltd. All rights reserved.
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