One-Pot Synthesis of Ag/AgCl Heterojunction Nanoparticles on Polyaniline Nanocone Arrays on Graphene Oxide for Microwave Absorption,ACS Applied Nano Materials

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One-Pot Synthesis of Ag/AgCl Heterojunction Nanoparticles on Polyaniline Nanocone Arrays on Graphene Oxide for Microwave Absorption
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-03-01 , DOI: 10.1021/acsanm.2c05440
Wenwen Fu ₁ , Wentong Yang ₁ , Chen Qian ₁ , Yaqin Fu ₁ , Yaofeng Zhu ₁

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Heterointerfaces in microwave absorption materials can induce dielectric polarization relaxation for superior microwave absorption capacity. Nevertheless, the construction of favorable hierarchical structures in dielectric heterogeneous materials remains a considerable challenge. Herein, Ag/AgCl heterojunction (HAg) nanoparticles are successfully decorated on polyaniline (PANI)/graphene oxide (GO) sheets through simple one-pot interfacial polymerization. The synthesized HAg/PANI/GO hybrid exhibits superior microwave absorption performance due to the multi-heterogeneous and hierarchical structures, which provides numerous interface polarizations, dipolar relaxations, and improved impedance matching. The minimum reflection loss of the optimum HAg/PANI/GO hybrid reaches −61.14 dB at 11.32 GHz with an effective absorption bandwidth of 4.77 GHz in the range from 9.70 to 14.47 GHz. This work provides ideas for producing multi-heterogeneous and hierarchical structures to reach a high microwave absorption performance.

中文翻译：

一锅法合成氧化石墨烯上聚苯胺纳米锥阵列上的 Ag/AgCl 异质结纳米粒子用于微波吸收

微波吸收材料中的异质界面可以诱导介电极化弛豫以获得出色的微波吸收能力。然而，在介电异质材料中构建有利的分层结构仍然是一个相当大的挑战。在此，Ag/AgCl 异质结 (HAg) 纳米粒子通过简单的一锅界面聚合成功地装饰在聚苯胺 (PANI)/氧化石墨烯 (GO) 片材上。由于多异质和分层结构，合成的 HAg/PANI/GO 杂化物表现出优异的微波吸收性能，提供了许多界面极化、偶极弛豫和改进的阻抗匹配。最佳 HAg/PANI/GO 混合体的最小反射损耗在 11.32 GHz 时达到 −61.14 dB，有效吸收带宽为 4。77 GHz，范围从 9.70 到 14.47 GHz。这项工作为生产多异质和分层结构以达到高微波吸收性能提供了思路。

更新日期：2023-03-01

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