Bifunctional Two-Dimensional Nanocomposite with Electromagnetic Wave Absorption and Anti-bacterial Performance  

作　　者：Jiacheng Shen Xinrui Zhang Chunguang Yang Zixuan Lei Shuaizhen Li Lin Ma Dianyu Geng Song Ma Wei Liu Zhidong Zhang 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Hefei,230026,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2023年第9期1559-1571,共13页金属学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.51871219,52071324,52031014 and U1908220);the National Key R&D Program of China(Nos.2022YFB3504804 and 2021YFC2202402);the Bintech‐IMR R&D Program(GYY‐JSBU‐2022-007).

摘　　要：In current electronic information era,the complex application circumstance of 5G devices pursues the exploration of multi-functional electromagnetic wave(EMW)absorbent materials and it has become the crucial focus in industrial development.A two-dimensional(2D)graphite nanosheet decorated by nickel nanocapsules(2D graphite/Ni@C nanocomposite)was fabricated to possess the EMW absorption and the Escherichia coli(E.coli)anti-bacterial performance simultaneously.By adjusting the filling ratio and injecting nitrogen doping,the value of minimum reflection loss is−36.08 dB and the effective absorption bandwidth reaches to 5.12 GHz(from 11.4 to 16.52 GHz)with the mass ratio of 30 wt%and the absorber thickness of 2 mm.This 2D nanocomposite simultaneously gets an excellent anti-bacterial function expressing an E.coli anti-bacterial rate of 92%during 24 h which is significantly correlated to the interaction between the nanostructure of the 2D nanographite and the nickel ion released from Ni@C nanocapsules.This work provides a new approach to develop a promising 2D anti-bacterial EMW absorber.

关 键 词：Bifunctional electromagnetic wave absorbent material Nickel-based two-dimensional nanocomposite E.coli anti-bacterial performance 

分 类 号：TB3[一般工业技术—材料科学与工程]