کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7994335 | 1516158 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multi-interfacial Co@CoNx@C(N) nanocapsules with nitrogen substitutions in graphitic shells for improving microwave absorption properties
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Integrating multiple components with heterogeneous interfaces has been widely proven effective for optimizing the microwave absorption properties of composites. We herein report on an arc-discharging strategy to synthesize the onion-like Co@CoNx@C(N) nanocomposite with dual core@shell heterogeneous interfaces. The graphitic carbon shells are in-situ functionalized by nitrogen substitutions, resulting in the formation of pyridinic, pyrrolic and graphitic nitrogen substitutions. Such a structural configuration contributes to a significant enhancement in dielectric loss capacity, presenting three main attenuation peaks at the frequencies of 6.6Â GHz, 13.5Â GHz and 17.1Â GHz, respectively. The Co@CoNx@C(N) nanocomposite simultaneously possesses on the synergistic effect of heterogeneous interfaces and the atomic-scale substitutions in a nanoscale system and thus has important implications in designing novel microwave absorption materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 736, 5 March 2018, Pages 51-56
Journal: Journal of Alloys and Compounds - Volume 736, 5 March 2018, Pages 51-56
نویسندگان
Zhaohui Wang, Jieying Wang, Yixing Li, Rongge Liu, Yanhui Zhang, Xiaoning Zhao, Xuefeng Zhang,