Scalable synthesis of TiO₂-Ag Janus composite particles

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• 作者：Qinhui Chen ; Longhui Zheng ; Baoling Chen ; Jinhuo Lin
• 关键词：Janus ; Anisotropic ; TiO2&ndash ; Ag ; Swell ; Emulsion ; Tunable shape
• 刊名：European Polymer Journal
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：49
• 期：9
• 页码：2610-2616
• 全文大小：1670 K

文摘

Janus particles possess heterogeneous surface chemistries which can potentially enhance their interfacial activity and be exploited as useful catalysis agent. It is challenging to control the geometry of the Janus particles and to produce Janus particles in large quantities. In this report, we use a general approach of emulsion swelling assisted protrusion to synthesize the Janus composite particles of titania - poly (vinylbenzyl chloride-divinylbenzene) (TiO₂-poly (VBC-DVB)). The size of the lobe of poly (VBC-DVB) is tunable. After a series of reactions, including Kornblum oxidation reaction and Tollens¡¯ reaction, the target product of TiO₂-Ag Janus composite particles is obtained.