Templated synthesis of Ag loaded TiO₂ nanostructures using amphiphilic polyelectrolyte

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• 作者：Jong Kwan Koh ; Jin Ah Seo ; Joo Hwan Koh ; Jong Hak Kim
• 关键词：Nanoparticles ; Silver ; TiO₂ ; Nanomaterials ; Graft copolymer
• 刊名：Materials Letters
• 出版年：2009
• 出版时间：15 June 2009
• 年：2009
• 卷：63
• 期：15
• 页码：1360-1362
• 全文大小：266 K

文摘

A graft-type amphiphilic polyelectrolyte, i.e. poly(vinylidene fluoride-co-chlorotrifluoroethylene)-g-poly(styrene sulfonic acid) (P(VDF-co-CTFE)-g-PSSA) with 47 wt. % of PSSA was synthesized via atom transfer radical polymerization (ATRP) and used as a template film for the in-situ formation of Ag nanoparticles. This nanocomposite material was further combined with titanium(IV) isopropoxide (TTIP) to form Ag loaded TiO₂ nanostructural hybrid materials. UV–visible spectroscopy, X-ray diffraction (XRD) and transmission electron microscope (TEM) revealed successful synthesis of Ag-TiO₂ nanostructures templated in the P(VDF-co-CTFE)-g-PSSA graft copolymer film. It was also found that the d-spacing of the graft copolymer in XRD patterns was increased from 4.1 to 4.4 Å, presumably due to the chain expansion resulting from the incorporation of nanoparticles in highly entangled polymeric chains.