论文总字数：16780字

摘 要

近年来，膜材料分离已经成为人们解决诸如资源短缺、环境污染等很多关键问题上不可或缺的技术，被广泛应用于海水脱盐、食品加工、气液分离和废气废水处理等众多领域。

膜分离比一般的分离的方法高效、能耗小、快捷便利，而且最关键的是对环境的影响很小。膜材料通过孔径和结构的变化提供更高的渗透通量、更高的选择性和更好的稳定性。

本文以单原子层厚、二维空间网络的氧化石墨烯为基础，插层氨基聚乙二醇，通过真空抽滤的方法，成功制备出氨基聚乙二醇插层的氧化石墨烯纳米复合膜。本文主要的研究内容如下：

通过插层氨基聚乙二醇，制备出氧化石墨烯纳米复合膜，并对所制得的膜进行SEM、接触角、FT-IR、XRD等表征。结果表明氨基聚乙二醇通过与氧化石墨烯形成共价键成功插层到GO膜层间。将不同氨基聚乙二醇掺杂量的复合膜进行10%水-乙醇的渗透汽化测试，在70ºC条件下，掺杂25倍GO量的氨基聚乙二醇所得的复合膜的性能最佳，通量达1500g/m^-2h^-1，分离因子达176。

关键词：氧化石墨烯 氨基聚乙二醇 醇水分离

Abstract

In recent years, membrane separation has become an indispensable technology for many key issues such as resource shortages and environmental pollution. It has been widely used in many fields such as desalination of seawater, food processing, gas-liquid separation and waste gas treatment.

Compared with the conventional separation method, membrane separation technology has the advantages of high separation efficiency, energy saving, less space, easy amplification and control, easy operation and no pollution. Membrane materials provide higher permeability through higher pore size and structural changes, higher selectivity and better stability, and have good selectivity.

In this paper, we intercalated amino polyethylene glycol into the sheets of graphene oxide which have the single atom layer, two-dimensional network. We used vacuum filtration method , and successfully prepared the amino polyethylene glycol intercalated graphene oxide nanocomposite membrane.

The main contents of this paper are as follows:

The graphene oxide nanocomposite membrane was prepared by intercalating amino polyethylene glycol, and the prepared films were characterized by SEM, contact angle, FT-IR and XRD. The results show that amino polyethylene glycol is intercalated into the GO sheets by forming covalent bond with graphene oxide.

The composite membranes, which with different amount of amino polyethylene glycol were carried out the pervaporation test to separation water from 10% water-ethanol system. We found that the performance of the composite membrane, which with the amount of amino polyethylene glycol was 25 times of the graphene oxide was best at 70 ° C. The flux were up to 1500g/m-2h-1 and the separation factor of the composite membrane 176.

Key Words: Graphene oxide; Amino polyethylene glycol; alcohol water separation

目录

摘 要 I

Abstract II

第一章 文献综述 1

1.1背景 1

1.2氧化石墨烯的制备 2

1.3氧化石墨烯膜的制备 3

1.4氧化石墨烯膜的表征及改性方法 4

1.4渗透汽化 7

1.5 本课题研究意义及内容 7

1.5.1 研究意义 7

1.5.2 研究内容 7

第二章 氧化石墨烯膜的制备 9

2.1引言 9

2.2实验部分 9

2.2.1实验试剂和仪器设备 9

2.2.2氧化石墨烯膜的制备 10

2.2.3氧化石墨烯及其膜的表征 10

第三章 GO-NH2-PEG-NH2复合膜的制备与表征 14

3.1引言 14

3.2实验部分 14

3.2.1氧化石墨烯-氨基聚乙二醇复合膜（CO-NH₂-PEG-NH₂）的制备 14

3.2.2 CO-NH2-PEG-NH2复合膜的表征 15

3.3实验结果 18

3.3.1温度对GO-NH₂-PEG-NH₂复合膜渗透汽化性能的影响 18

3.3.2氨基聚乙二醇掺杂量对复合膜膜渗透汽化性能的影响 18

3.3本章小节 19

第四章 结论与展望 20

4.1结论 20

4.2展望 20

参考文献 21

致谢 23

1. 文献综述

1.1背景

近年来，膜材料分离技术已经成为人们解决诸如资源短缺、环境污染等很多关键问题上不可或缺的技术手段，被广泛应用于海水脱盐、食品加工、药物分离和废气废水处理等众多领域。

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