物理化学学报2026，Vol.42Issue(6)：144-156,13.DOI:10.1016/j.actphy.2026.100271
分子偶极工程调控MXene/ZnO异质结构的介电性能
Molecular dipole engineering for tailored dielectric properties in MXene/ZnO heterostructures
摘要
Abstract
The optimization of dielectric properties through controlling polarization effects in heterogeneous materials remains challenging due to structural complexity.This work demonstrates the precise regulation of interface polarization strength through molecular grafting-induced dipole reorientation.Experimental analyses confirm that the orientation of these dipoles effectively modulates the interfacial polarization:the-CF3 group enhances,while the-NH2 group suppresses electron transfer and polarization loss effects.The optimized MXene/ZnO modified with-CF3 composite exhibits exceptional electromagnetic wave absorption performance,achieving a minimum reflection loss of-66.7 dB and an effective absorption bandwidth of 5.05 GHz.This work demonstrates a novel strategy for the precise tuning of electromagnetic parameters through interfacial dipole engineering,offering new insights for the design of advanced electromagnetic wave-absorbing materials.关键词
介电参数/偶极矩/界面极化/硅烷偶联剂/氧化锌量子点Key words
Dielectric parameters/Dipole moment/Interface polarization/Silane coupling agents/ZnO quantum dots分类
化学化工引用本文复制引用
王嘉浩,王广胜,蔡博,孙博文,侯志灵,杨树豪,杨青林,赵培炎,李文萍,张宇..分子偶极工程调控MXene/ZnO异质结构的介电性能[J].物理化学学报,2026,42(6):144-156,13.基金项目
本研究获得北京航空航天大学杭州创新研究院科研基金(2024KQ130)和国家自然科学基金(22575012、52373259)资助.作者感谢北京航空航天大学分析测试中心提供的设备支持与科研技术协助,同时致谢实验家实验室(www.shiyanjia.com)提供的XPS与UPS表征服务. （2024KQ130）
