Wen Xing, Tang Liming, Li Botian
Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084 (P.R. China).
Chem Asian J. 2014 Oct;9(10):2975-83. doi: 10.1002/asia.201402575. Epub 2014 Aug 11.
Poly(N,N'-methylenebisacrylamide-4-vinylpyridine) (P(MBA-4VP)) nanowires loaded with silver nanoparticles (Ag NPs) have been fabricated by silver metallogel template copolymerization, and subsequently, silver ions are reduced instead of the template being removed. Ag NPs with a diameter of 5-15 nm were dispersed throughout the core of P(MBA-4VP) nanowires. The size and distribution of the formed Ag NPs could be finely controlled by reduction time. The pH sensitivity of P(MBA-4VP) nanowires offers the possibility of Ag NP release from the nanowires under acidic conditions. The photocatalytic performance of the P(MBA-4VP) nanowires loaded with Ag NPs was evaluated for the degradation of methylene blue (MB) under UV light irradiation. Their rate of degradation is dependent on the content and size of the Ag NPs, as well as the pH values of the MB solution. Moreover, the P(MBA-4VP) nanowires loaded with Ag NPs exhibited high photostability, and the photocatalytic efficiency reduced by only 1.81% after being used three times.
通过银金属凝胶模板共聚法制备了负载银纳米颗粒（Ag NPs）的聚（N，N'-亚甲基双丙烯酰胺-4-乙烯基吡啶）（P（MBA-4VP））纳米线，随后银离子被还原，而不是去除模板。直径为5-15 nm的Ag NPs分散在P（MBA-4VP）纳米线的整个核心中。通过还原时间可以精细控制所形成的Ag NPs的尺寸和分布。P（MBA-4VP）纳米线的pH敏感性提供了在酸性条件下Ag NPs从纳米线中释放的可能性。评估了负载Ag NPs的P（MBA-4VP）纳米线在紫外光照射下对亚甲基蓝（MB）降解的光催化性能。它们的降解速率取决于Ag NPs的含量和尺寸以及MB溶液的pH值。此外，负载Ag NPs的P（MBA-4VP）纳米线表现出高光稳定性，使用三次后光催化效率仅降低1.81%。
