Surface modification of graphene oxide sheets on magnetic particles for magnetic paper
Surface modification of graphene oxide sheets on magnetic particles for magnetic paper
复制标题
磁性纸用磁性颗粒上氧化石墨烯片的表面修饰
DOI：
10.1016/j.jallcom.2016.11.157
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发表时间：
2017-02
影响因子：
6.2
通讯作者：
Jianbo Song
中科院分区：
文献类型：
--
作者：
Zuxue Mo;Hongwei Guo;Yufei Wang;Hairong Yin;Chen Yang;Jianbo Song
磁性纸制品以其优异的性能，如今被广泛应用于信息存储、电磁屏蔽、安防行业。本文采用熔融淬火技术制备了掺铽硼硅酸硼玻璃，并将其作为磁性纸的磁源负载到竹纤维中。通过添加不同浓度氧化石墨烯（GO）溶液改性的无机磁性颗粒，成功生产出磁性纸。通过傅里叶变换红外光谱（FT-IR）、拉曼光谱、超导量子干涉仪（SQUID）和扫描电子显微镜（SEM）对样品进行了表征。结果表明，磁性粒子的结构由[BO3]、[BO4]、[A1O6]、[SiO4]和[GeO4]组成。 GO片已通过静电相互作用成功固定在磁性颗粒（MPs）表面。 SQUID表明磁性颗粒和纸张是顺磁性材料。 SEM 图像清楚地显示 MP 加载到竹纤维的内腔和纤维的间隙中。由于磁性颗粒表面的官能团，在纸的网络中形成通过氢键连接其他纤维素纤维和MP的桥纤维。纸张的机械性能随着GO浓度的增加而提高，这与纸张网络中桥纤维和其他纤维素纤维形成的氢键有关。
Magnetic paper manufactures are nowadays widely used in information storage, electromagnetic shielding and security industry for its outstanding performances. In this article, Tb-doped germanium borosilicate glass was prepared by melt quenching technique and they were used as magnetic sources of magnetic paper to loading into the bamboo fibers. Magnetic paper has been successfully produced by adding inorganic magnetic particles modified by different concentrations of graphene oxide (GO) solution. The samples were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), Raman Spectroscopy, Superconducting Quantum Interferometer Device (SQUID) and Scanning Electron Microscope (SEM). The results shown that the structure of magnetic particle are made from [BO3], [BO4], [A1O6], [SiO4] and [GeO4]. GO sheets had been successfully immobilized on magnetic particles (MPs) surface via electrostatic interaction. SQUID indicated that the magnetic particles and papers were paramagnetic materials. SEM images clearly shown that the MPs loaded into the lumen of bamboo fibers and the interstitial of fibers. Bridge-fibers that connecting other cellulose fibers and MPs by hydrogen bonds were formed in the network of paper due to the functional groups on surface of magnetic particles. The mechanical properties of papers increased with the increment of GO concentration, which is correlated with the hydrogen-bonding that forming by bridge-fibers and other cellulose fibers in network of paper.
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