膜科学与技术

浸渍-热分解法制备荷正电微孔陶瓷膜

作者：张莉莉¹，²，李那¹，朱孟府²，程秀婷¹，²，邓宇¹，邓橙²

单位： 1.天津科技大学化工与材料学院，天津 300457; 2.军事医学科学院卫生装备研究所，天津 300161

关键词：以微孔硅藻土陶瓷膜为基膜，YCl3和NaOH反应制备的纳米Y2O3为荷电剂，经浸渍-热分解法制备荷正电微孔陶瓷膜。通过TGA、XRD、SEM、EDS、Zeta电位分析等手段对其组成和结构进行表征。结果显示，制备荷电剂的煅烧温度为700℃时，前驱体完全转化为纳米Y2O3，平均粒径约为 118nm，且Y2O3晶粒生长良好；荷电膜微孔结构保持良好，纳米Y2O3均匀地附着在基膜表面；荷电膜在pH为4~8范围内带正电性，其等电点为8.11。荷电膜的正电性能预示着其在去除水中带负电荷的微生物、细菌、病毒及有机染料等方面具有很大的应用前景。

出版年,卷(期):页码： 2016,36(3):21-25

摘要：

以微孔硅藻土陶瓷膜为基膜，YCl3和NaOH反应制备的纳米Y2O3为荷电剂，经浸渍-热分解法制备荷正电微孔陶瓷膜。通过TGA、XRD、SEM、EDS、Zeta电位分析等手段对其组成和结构进行表征。结果显示，制备荷电剂的煅烧温度为700℃时，前驱体完全转化为纳米Y2O3，平均粒径约为 118nm，且Y2O3晶粒生长良好；荷电膜微孔结构保持良好，纳米Y2O3均匀地附着在基膜表面；荷电膜在pH为4~8范围内带正电性，其等电点为8.11。荷电膜的正电性能预示着其在去除水中带负电荷的微生物、细菌、病毒及有机染料等方面具有很大的应用前景。

By the way of dipping-thermal decomposition, positively charged microporous ceramic membrane was prepared in this study which selected microporous diatomite as based-membrane and nano-Y2O3 as charged agent. Nano-Y2O3 was synthesized through the reaction of YCl3 and NaOH. The composition and structure of charged membrane was characterized by TGA、XRD、SEM、EDS、Zeta potential and so on. These results indicated that the precursor completely transformed into nano- Y2O3 with average particle size 118nm when calcined at 700℃. The crystal of Nano-Y2O3 grew well. Pore structure of charged membrane kept fine. And nano-Y2O3 attached uniformly on the membrane surface. In the pH range of 4~8, charged membrane with an isoelectric point of 8.11 possessed strongly positive electricity. The positive performance of charged membrane predicts a great application prospect in terms of removing negative charged microorganism, bacteria, viruses and organic dyes and so on.

张莉莉，1989年生，女，籍贯河南开封，硕士研究生；研究方向为荷电膜法水处理技术；E-mail: 1226214905@qq.com 通讯作者： E-mail: zmf323@163.com ; E-mail: dcnudt@163.com

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