Photocatalytic treatment of acidic waste water by electrospun composite nanofibers of pH-sensitive hydrogel and TiO2
Photocatalytic treatment of acidic waste water by electrospun composite nanofibers of pH-sensitive hydrogel and TiO2
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DOI：
10.1016/j.matlet.2010.08.001
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发表时间：
2010-11
影响因子：
3
通讯作者：
Jumi Yun;Dongnv Jin;Young-Seak Lee;Hyung‐Il Kim
中科院分区：
文献类型：
--
作者：
Jumi Yun;Dongnv Jin;Young-Seak Lee;Hyung‐Il Kim
采用静电纺丝法制备聚(乙烯醇)/聚(N,N-二甲基氨基丙基丙烯酰胺)水凝胶和TiO2复合纳米纤维，用于酸性废水的新型处理。锐钛矿型TiO2因其光降解效率高而被用作光催化剂。将 TiO2 固定在电纺纤维中，以便在废物处理后轻松回收 TiO2。由于聚合物链中质子化胺基之间的排斥作用，水凝胶纳米纤维在酸性条件下迅速膨胀。通过水凝胶在酸性条件下的快速溶胀和超声处理TiO2的均匀分散，获得了高效率的光催化分解染料。
The composite nanofibers of poly(vinyl alcohol)/poly(N,N-dimethylaminopropyl acrylamide) hydrogel and TiO2were prepared by electrospinning for a novel treatment of acidic waste water. The anatase TiO2was used as a photocatalyst due to its high photodegradation efficiency. TiO2was immobilized in the electrospun fibers for an easy recovery of TiO2after the waste treatment. The hydrogel nanofibers swelled rapidly in the acidic condition due to the repulsion among the protonated amine groups in the polymer chains. High efficiency of photocatalytic decomposition of dye was obtained by the fast swelling of hydrogel in the acidic condition and the uniform dispersion of TiO2by sonication.