• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Molecules >Preparation and Characterization of TiO2-PVDF/PMMA Blend Membranes Using an Alternative Non-Toxic Solvent for UF/MF and Photocatalytic Application
【2h】

Preparation and Characterization of TiO2-PVDF/PMMA Blend Membranes Using an Alternative Non-Toxic Solvent for UF/MF and Photocatalytic Application

机译：UF / MF替代非毒性溶剂和光催化应用制备TiO2-PVDF / PMMA共混膜及其表征

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The approach of the present work is based on the use of poly (methylmethacrylate) (PMMA) polymer, which is compatible with PVDF and TiO2 nanoparticles in casting solutions, for the preparation of nano-composites membranes using a safer and more compatible solvent. TiO2 embedded poly (vinylidene fluoride) (PVDF)/PMMA photocatalytic membranes were prepared by phase inversion method. A non-solvent induced phase separation (NIPS) coupled with vapor induced phase separation (VIPS) was used to fabricate flat-sheet membranes using a dope solution consisting of PMMA, PVDF, TiO2, and triethyl phosphate (TEP) as an alternative non-toxic solvent. Membrane morphology was examined by scanning electron microscopy (SEM). Backscatter electron detector (BSD) mapping was used to monitor the inter-dispersion of TiO2 in the membrane surface and matrix. The effects of polymer concentration, evaporation time, additives and catalyst amount on the membrane morphology and properties were investigated. Tests on photocatalytic degradation of methylene blue (MB) were also carried out using the membranes entrapped with different concentrations of TiO2. The results of this study showed that nearly 99% MB removal can be easily achieved by photocatalysis using TiO2 immobilized on the membrane matrix. Moreover, it was observed that the quantity of TiO2 plays a significant role in the dye removal.
机译：本工作的方法是基于在浇铸溶液中使用与PVDF和TiO2纳米颗粒相容的聚（甲基丙烯酸甲酯）（PMMA）聚合物，以使用更安全，更兼容的溶剂制备纳米复合膜。采用相转化的方法制备了TiO2包埋的聚偏二氟乙烯（PVDF）/ PMMA光催化膜。使用由PMMA，PVDF，TiO2和磷酸三乙酯（TEP）组成的涂料溶液作为非溶剂替代物，将非溶剂诱导相分离（NIPS）结合气相诱导相分离（VIPS）来制造平板膜。有毒溶剂。通过扫描电子显微镜（SEM）检查膜的形态。背散射电子检测器（BSD）映射用于监测TiO2在膜表面和基质中的相互分散。研究了聚合物浓度，蒸发时间，添加剂和催化剂用量对膜形貌和性能的影响。还使用截留不同浓度TiO2的膜对亚甲基蓝（MB）进行了光催化降解测试。这项研究的结果表明，使用固定在膜基质上的TiO2进行光催化可轻松实现近99％的MB去除。而且，观察到TiO 2的量在染料去除中起重要作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号