Trititanate-nanosheet incorporated hydrogels: Self-initiated photopolymerization and application in photodegradation of methylene violet

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• 作者：Weiwei Yang ; Bizhou Lin ; Qianru Yao ; Guohua Zhang and Shaofeng Jiang
• 刊名：Polymer Composites
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：37
• 期：9
• 页码：2811-2819
• 全文大小：567K
• ISSN：1548-0569

文摘

Exposing the aqueous mixtures of acrylamide (AAm) monomers and exfoliated trititanate nanosheets (TiNs) to ultraviolet light achieved nanocomposite hydrogels TiNs–PAAm in a facile one-step synthetic route. The incorporated semiconductor TiNs functioned as a photocatalytic crosslinker, initiating the in situ photopolymerization of monomers and hydrogen-bonding crosslinking with the polymeric networks to form nanocomposite hydrogels. The resultant hydrogels exhibited good absorption behaviors of methylene violet (MV), and the hydrogel prepared from an AAm/TiNs ratio of 2.46 × 10² g/g exhibited a maximum uptake of 8.4 g MV solution for 1 g. The immobilized TiNs retained high photocatalytic activity in the recyclable photodegradation of MV. It indicated the nanocomposite hydrogels may be considered as a good candidate in wastewater treatment. POLYM. COMPOS., 37:2811–2819, 2016.