摘要：随着科学技术的发展，纳米技术已经成为科学发展中不可或缺的一项技术，现在越来越多的科学家都在研究纳米技术。Baodian Yao等人在氧化铝膜上组装可控孔径的介孔材料，形成介孔膜。这样制成的介孔膜在催化、吸附、分离等许多领域有着不可估量的应用价值膜过滤技术是当前国内外处理工业废水的重要技术，与其他净化分离技术相比，膜过滤技术具有能耗低、分离效率高、工作可靠性强、设备占地面积少、自动化控制程度高等优点。本文利用无毒无害的介孔二氧化硅材料以聚偏氟膜作为基体合成复合材料膜。该膜材质轻，耐高压。由于其使用PVDF膜作为基体，在价格上比一般用于铬离子分离的无机陶瓷氧化锆膜或者是多孔阳极氧化铝膜都要便宜,并研究其对水中铬离子的吸附效果。34957
毕业论文关键词：介孔材料;复合膜;二氧化硅;铬离子;吸附
Syntheses of Hybrid Mesoporous Silica Membranes and Adsorption to Chromium
Abstract:With the development of science and technology, nanotechnology has become an integral part of a scientific development of technology, more and more scientists are now in the research of nanotechnology.Baodian Yao on the alumina membrane assembly controllable pore size of mesoporous materials, the formation of mesoporous membrane。 Made of such mesoporous membrane in many fields such as catalysis, adsorption, separation has immeasurable value membrane filtration technology is the important industrial wastewater treatment technology at home and abroad, compared with other purification separation technology, membrane filtration technology with low energy consumption, high separation efficiency, work reliability, equipment covers an area of less, high degree of automation control using non-toxic harmless, mesoporous silica materials polyvinylidene fluoride membrane as matrix synthesis of composite membrane. The membrane material is qualitative light, resistance to high pressure.Because of its using PVDF membrane as matrix, on price than is commonly used in chromium ion separation of inorganic ceramic zirconia membrane or porous anodic alumina film is cheaper.And to study the adsorption effect of chromium ion in water.
Keywords: Mesoporous materials ;Mesoporous membrane;Silica; Chromium; Adsorption
目录
1 前言    1
1.1选题意义    1
1.2 纳米介孔材料    2
1.2.1 纳米材料的介绍    2
1.2.2 介孔及介孔膜材料的介绍    3
1.2.3聚偏氟乙烯（PVDF）膜材料简介    3
1.2.4 铬离子对人体的危害    4
1.3 含铬废水与铬离子的吸附    4
1.3.1 含铬废水污染的介绍    4
1.3.2 含铬废水的治理技术    4
2 实验原理与合成路线    4
2.1复合介孔膜合成原理    4
2.2 二苯碳酰二肼分光光度法测水中铬离子浓度    5
铬标准贮备液    5
3 实验部分    6
3.1 实验仪器    6
3.2 实验试剂    7
3.3 实验内容    8
3.3.1 MCM-41型有机/无机复合介孔膜的制备    8
3.3.2 复合介孔膜的处理    8
3.3.3 实验流程图与抽滤装置    9
3.3.4 铬离子吸附试验    10
3.3. 5水中铬离子测试方法    10
4 结果与讨论    11
4.1 合成与表征    11
4.1.1 材料宏观照片    11
4.1.2 PVDF膜的扫描电镜(SEM)表征    11
4.1.3 能量分散光谱（EDS）分析图    12
4.1.4 表面张力分析    13 复合PVDF介孔二氧化硅膜的合成及其对金属铬离子吸附研究:http://www.751com.cn/huaxue/lunwen_32692.html