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- 저자 : Huiying Zhao (검색결과 2 건)
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Chen, Lei,Yan, Huiying,Xue, Xiangxin,Jiang, Dayu,Cai, Yuxi,Liang, Dongmei,Jung, Young Mee,Han, Xiao Xia,Zhao, Bing SAGE Publications 2017 APPLIED SPECTROSCOPY Vol.71 No.7
<P>In this work, we designed a process to assemble gold nanoparticles onto a three-dimensional (3D) polymer surface, which can then be monitored using surface-enhanced Raman scattering (SERS). This work is the first demonstration of the assembly of gold nanoparticles on a filter film and in situ measurement with Raman spectroscopy. Herein, a polyhexamethylene adipamide (Nylon66) film embedded in the organic filter film was used as a template to fabricate a tunable SERS-active substrate. A 'hotspot''-rich gold-nanoparticle-decorated polymer substrate for SERS was prepared; this substrate exhibited high sensitivity in trace detection of targets. The study was conducted using 4-mercaptobenzoic acid as a probe molecule with the aim of comparing the scattering efficiency and the homogeneity of the Raman signal on selected substrates. In addition, we used the gold-decorated polymer film to detect a biotin-avidin complex. The most powerful advantage of the proposed microanalytical device is the in situ SERS application. The 3D nanoporous structures described in this work hold strong potential for use in various applications such as environmental monitoring and biomolecule detection.</P>
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Yadan Ding,Dan Xu,Hong Shao,Tie Cong,Xia Hong,Huiying Zhao 한국섬유공학회 2019 Fibers and polymers Vol.20 No.10
SiO2/polystyrene porous micro/nanofibers with superhydrophobic and superoleophilic properties were preparedby facile electrospinning method. The spindle-beads-on-string structured fibers were found to be more hydrophobic thanthose without the beads. The doping of nano-SiO2 endowed the fibers with porous structure, and thus further increased thewater contact angle from 139 o to 153 o. Simultaneously, the oil contact angle of 0 o was obtained. The superhydrophobicsuperoleophilicmicro/nanofibers could selectively absorb oil from water within eight seconds. The oil sorption processfollowed pseudo-first order kinetic model. The absorption mechanism was proved to be physical encapsulation by Fouriertransform infrared technique. The maximum sorption capacity for highly viscous silicone oil was up to 122.7 g/g. It is higherthan many recently reported values. The porous micro/nanofibers exhibit significant value in oil-water separation.
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