Surface modification of the nanoparticles by an atmospheric room-temperature plasma fluidized bed
Surface modification of the nanoparticles by an atmospheric room-temperature plasma fluidized bed
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DOI：
10.1016/j.apsusc.2007.12.011
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发表时间：
2008-04
影响因子：
6.7
通讯作者：
Guangliang Chen;Shihua Chen;Wenran Feng;W. X. Chen;Si‐ze Yang
中科院分区：
文献类型：
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作者：
Guangliang Chen;Shihua Chen;Wenran Feng;W. X. Chen;Si‐ze Yang
以六甲基二硅氧烷（HMDSO）为单体，采用常压室温等离子体流化床（ARPFB）对氧化镍（NiO）磁性纳米粒子（NPs）进行了表面修饰。ARPFB的等离子体气体温度不高于325 K，这有利于有机聚合。用紫外-可见单色仪记录了由Ar和HMDSO组成的混合气体的等离子体发射光谱。通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）对纳米粒子进行了表征。结果表明，经有机硅聚合物修饰后，纳米粒子的组装得到了很好的分离。此外，改性后的纳米粒子表面的润湿性由超亲水性转变为超疏水性，水在改性纳米粒子表面的接触角（CA）超过150°。因此，ARPFB是一种很有前途的纳米粒子表面改性技术，可以根据不同的要求对纳米粒子进行表面改性。
Using hexamethyldisiloxane (HMDSO) monomer, the magnetic nanoparticles (NPs) of nickel oxide (NiO) were modified by using an atmospheric room-temperature plasma fluidized bed (ARPFB). The plasma gas temperature of the ARPFB was not higher than 325K, which was favorable for organic polymerization. The plasma optical emission spectrum (OES) of the gas mixture consisting of argon (Ar) and HMDSO was recorded by a UV–visible monochromator. The as-treated NPs were characterized by means of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The results show that the assembling NPs were isolated greatly after modified by the organosilicon polymer. Moreover, this treatment process changed the wettability of the NPs from super-hydrophilicity to super-hydrophobicity, and the contact angle (CA) of water on the modified NPs surface exceeded 150°. Therefore, the ARPFB is a prospective technology for the NPs surface modification according to the different requirements.