Immobilization of silver nanoparticles on silica microspheres |
| |
| Authors: | Chih-Kai Huang Chia-Yin Chen Jin-Lin Han Chii-Chang Chen Meng-Dan Jiang Jen-Sung Hsu Chia-Hua Chan and Kuo-Huang Hsieh |
| |
| Institution: | (1) Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan;(2) Department of Chemical and Materials Engineering, National Ilan University, Ilan, 260, Taiwan;(3) Department of Optics and Photonics, National Central University, No. 300, Jhongda Rd, Jhongli City, Taoyuan, 32001, Taiwan;(4) Chung-Shan Institute of Science and Technology, Taoyuan, 320, Taiwan; |
| |
| Abstract: | The silver nanoparticles (Ag NPs) have been immobilized onto silica microspheres through the adsorption and subsequent reduction
of Ag+ ions on the surfaces of the silica microspheres. The neat silica microspheres that acted as the core materials were prepared
through sol–gel processing; their surfaces were then functionalized using 3-mercaptopropyltrimethoxysilane (MPTMS). The major
aims of this study were to immobilize differently sized Ag particles onto the silica microspheres and to understand the mechanism
of formation of the Ag nano-coatings through the self-assembly/adsorption behavior of Ag NPs/Ag+ ions on the silica spheres. The obtained Ag NP/silica microsphere conglomerates were characterized by field-emission scanning
electron microscopy (FE-SEM), transmission electron microscopy (TEM), and energy-dispersive spectroscopy (EDS). Their electromagnetic
wave shielding effectiveness were also tested and studied. The average particle size of the obtained Ag NPs on the silica
microsphere was found that could be controllable (from 2.9 to 51.5 nm) by adjusting the ratio of MPTMS/TEOS and the amount
of AgNO3. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
