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多孔 FeO 纳米棒-还原氧化石墨烯纳米杂化材料的制备及其优异的微波吸收性能。

Preparation of porous FeO nanorods-reduced graphene oxide nanohybrids and their excellent microwave absorption properties.

机构信息

College of Physics, Guizhou University, Guiyang, 550025, People's Republic of China.

Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing, 210093, People's Republic of China.

出版信息

Sci Rep. 2017 Sep 11;7(1):11213. doi: 10.1038/s41598-017-11131-1.

DOI:10.1038/s41598-017-11131-1
PMID:28894160
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5593864/
Abstract

In this paper, α-FeO nanoparticles (NPs)-reduced graphene oxide (RGO), α-FeOOH nanorods (NRs)-RGO and porous α-FeO NRs-RGO could be selectively synthesized by hydrothermal method. The investigations indicated that the obtained α-FeO NPs, α-FeOOH NRs and porous α-FeO NRs were either attached on the surface of RGO sheets or coated uniformly by the RGO sheets. And the as-prepared nanohybrids exhibited excellent microwave absorption performance, which was proved to be ascribed to the quarter-wavelength matching model. The optimum reflection loss (RL) values for α-FeO NPs-RGO, α-FeOOH NRs-RGO and porous α-FeO NRs-RGO were ca. -32.3, -37.4 and -71.4 dB, respectively. Moreover, compared to the obtained α-FeO NPs-RGO and α-FeOOH NRs-RGO, the as-prepared porous α-FeO NRs-RGO nanohybrids exhibited enhanced microwave absorption properties because of their special structure and synergetic effect. The possible enhanced microwave absorption mechanisms were discussed in details. Our results confirmed that the geometrical morphology had a great influence on their microwave absorption properties, which provided a promising approach to exploit high performance microwave absorbing materials.

摘要

本文通过水热法选择性地合成了α-FeO 纳米颗粒（NPs）-还原氧化石墨烯（RGO）、α-FeOOH 纳米棒（NRs）-RGO 和多孔α-FeO NRs-RGO。研究表明，所获得的α-FeO NPs、α-FeOOH NRs 和多孔α-FeO NRs 要么附着在 RGO 片的表面上，要么被 RGO 片均匀地包覆。所制备的纳米杂化物表现出优异的微波吸收性能，这归因于四分之一波长匹配模型。α-FeO NPs-RGO、α-FeOOH NRs-RGO 和多孔α-FeO NRs-RGO 的最佳反射损耗（RL）值分别约为-32.3、-37.4 和-71.4 dB。此外，与所获得的α-FeO NPs-RGO 和α-FeOOH NRs-RGO 相比，所制备的多孔α-FeO NRs-RGO 纳米杂化物由于其特殊的结构和协同效应，表现出增强的微波吸收性能。详细讨论了可能的增强微波吸收机制。我们的结果证实，几何形态对其微波吸收性能有很大影响，为开发高性能微波吸收材料提供了一种有前途的方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/2ae01a1e432f/41598_2017_11131_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/c32728c6df18/41598_2017_11131_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/bdc983f332cf/41598_2017_11131_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/8efa1d0e1d10/41598_2017_11131_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/19ad9ab75f20/41598_2017_11131_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/a7e05e8ab9a1/41598_2017_11131_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/c44fc49b93bd/41598_2017_11131_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/e34d85dddd02/41598_2017_11131_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/4a6c6a56cfc0/41598_2017_11131_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/ac4125f5c207/41598_2017_11131_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/2ae01a1e432f/41598_2017_11131_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/c32728c6df18/41598_2017_11131_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/bdc983f332cf/41598_2017_11131_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/8efa1d0e1d10/41598_2017_11131_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/19ad9ab75f20/41598_2017_11131_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/a7e05e8ab9a1/41598_2017_11131_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/c44fc49b93bd/41598_2017_11131_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/e34d85dddd02/41598_2017_11131_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/4a6c6a56cfc0/41598_2017_11131_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/ac4125f5c207/41598_2017_11131_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5961/5593864/2ae01a1e432f/41598_2017_11131_Fig10_HTML.jpg

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