金红都,郭淑华,吕君,齐永杰,徐显卓,何耀耀

• 1:浙江广厦建设职业技术大学智能制造学院
• 2:浙江朋诚科技有限公司

摘要(Abstract)：

高效的微波吸收依赖于电磁损耗与阻抗匹配的协同优化，而这对于介电型吸收材料而言仍具有挑战性。文中通过聚苯乙烯(Ps)微球包覆的沸石咪唑骨架(PS@ZIF-8)的热解，构筑了具有分级多孔结构和富缺陷结构的氧化锌掺杂中空碳纳米球(ZnO/C-X)。PS牺牲模板去除与金属有机框架(MOF)可控分解的协同作用，形成了结构明确的中空腔体、分级多孔碳壳、均匀分散的ZnO纳米颗粒以及丰富的内在缺陷。中空结构能够有效调控介电常数，从而优化阻抗匹配；同时，异质界面、缺陷诱导偶极子以及相互连通的三维导电网络通过界面、偶极极化和电导损耗协同增强介电损耗。得益于这种中空结构与缺陷的一体化调控，ZnO/C-800在8.1 GHz处获得了最低反射损耗(RL_(min)=-41.1 dB)。上述结果表明，具有缺陷工程的中空MOF衍生结构是一种实现高性能微波吸收材料的有效策略。

关键词(KeyWords)： 中空结构;MOF衍生;缺陷工程;介电损耗;阻抗匹配

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金浙中科创走廊联合基金(LJHSQY26E010002);; 浙江省教育厅科研项目(Y202559264)

作者(Author): 金红都,郭淑华,吕君,齐永杰,徐显卓,何耀耀

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