Anion regulating endows core@shell structured hollow carbon spheres@MoSxSe_(2−x)with tunable and boosted microwave absorption performance  

作　　者：Junxiong Xiao Xiaosi Qi Lei Wang Tao Jing Jing-Liang Yang Xiu Gong Yanli Chen Yunpeng Qu Qiong Peng Wei Zhong 

机构地区：[1]College of Physics,Guizhou Province Key Laboratory for Photoelectrics Technology and Application,Guizhou University,Guiyang 550025,China [2]National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology,Nanjing University,Nanjing 210093,China [3]National Demonstration Center for Experimental Materials Science and Engineering Education,Jiangsu University of Science and Technology,Zhenjiang 212003,China [4]College of Science,Kaili University,Kaili 556011,China

出　　处：《Nano Research》2023年第4期5756-5766,共11页纳米研究（英文版）

基　　金：financially supported by the Doctorial Start-up Fund of Guizhou University(No.2011-05);the Fund of Fok Ying Tung Education Foundation,the Major Research Project of innovative Group of Guizhou province(No.2018-013);the Guizhou Provincial Science and Technology Projects(No.ZK 2022-General 044);the National Science Foundation of China(Nos.11604060 and 11964006).

摘　　要：Due to the good manipulation of electronic structure and defect,anion regulating should be a promising strategy to regulate the electromagnetic(EM)parameters and optimize the EM wave absorption performances(EMWAPs).In this work,we proposed a facile route for the large-scale production of core@shell structured hollow carbon spheres@MoSxSe_(2−x)(x=0.2,0.6,and 1.0)multicomponent nanocomposites(MCNCs)through a mild template method followed by hydrothermal process.The obtained results revealed that the designed hollow carbon spheres@MoSxSe_(2−x)MCNCs presented the improved sulfur vacancy concentration by regulating the x value from 0.2 to 1.0.The obtained hollow carbon spheres@MoSxSe_(2−x)MCNCs displayed the extraordinary comprehensive EMWAPs because of the introduced abundant defects and excellent interfacial effects.Furthermore,the as-prepared hollow carbon spheres@MoSxSe_(2−x)MCNCs presented the progressively improved comprehensive EMWAPs with the x value increasing from 0.2 to 1.0,which could be explained by their boosted polarization loss abilities and impedance matching characteristics originating from the enhanced sulfur vacancy concentration.Therefore,our findings not only demonstrated that the anion regulating was a promising method to optimize EM parameters and EMWAPs,but also provided a facile route to design the transition metal dichalcogenides-based MCNCs as the much more attractive candidates for highperformance microwave absorbers.

关 键 词：anion regulating core@shell structure hollow carbon spheres@MoSxSe_(2−x) interface and defect engineering microwave absorption 

分 类 号：O62[理学—有机化学]