第32卷第8期 2016年8月
无机化学学报
CHINESE JOURNAL OF INORGANIC CHEMISTRY
Vol.32 No.8 1345-1352
氧化石墨烯-Ag纳米粒子/聚酰亚胺混合基质膜及其渗透汽化性能
蒋漾漾戴世麒俞心怡林泽俊施沈炫湘王挺吴礼光*
(浙江工商大学环境科学与工程学院，杭州310012)
摘要：以聚乙二醇(PEG-40O)为还原剂，AgNO,为前驱体，采用浸溃-还原法合成氧化石墨烯-Ag纳米粒子(GO-AgNP)复合物，再通过共混法制备氧化石墨烯-Ag纳米粒子/聚酰亚胺(GO-AgNP/PI)混合基质膜，用于苯/环已烷混合物的渗透汽化分离。使用透射电子显微镜、红外吸收光谱、拉曼光谱、热失重以及X射线光电子能谱等分析表征GO-AgNP复合物、GO-AgNP/PI混合基质膜的形貌和结构；探讨了Ag掺杂量对GO-AgNP复合物的结构以及GO-AgNP/PI混合基质膜的结构和渗透汽化性能的影响。结果发现，Ag*被还原形成AgNP的同时，CO失去了部分含氧官能团；Ag掺杂破坏了GO的结构，使其无序度增加，但改善了GO-AgNP 复合物在混合基质膜中的分散性，提升了GO-AgNP/PI混合基质膜的苯/环已烷渗透汽化性能。然而过量的Ag掺杂将使GO片
最佳，渗透通量为1404g*m.h，分离因子可达36.2。
关键词：氧化石墨烯；Ag纳米粒子；聚酰亚胺；混合基质膜；渗透汽化
中图分类号：0631
文献标识码：A
DOI:10.11862/CJIC.2016.178
文章编号：1001-4861(2016)08-1345-08
PreparationandPervaporationPropertyofGO-AgNP/PIMixedMatrixMembranes
JIANGYang-YangDAI Shi-QiYUXin-YiLINJun-Ze SHI Shen-Xuan-XiangWANGTingWULi-Guang
(School of Enwironmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China)
Abstract: Graphene oxide-Ag nanoparticle (GO-AgNP) composites were synthesized by impregnation-reduction method using polyethylene glycol (PEG-4OO) as the reducer and AgNO, as the source of AgNP, which were then blended with polyimide(PI) to prepare GO-AgNP/PI mixed matrix membranes. The structure of GO-AgNP composites and GO-AgNP/PI mixed matrix membranes were characterized by Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, Thermo-gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS). The effect of AgNP-doping on pervaporation property of GO-AgNP/PI mixed matrix membranes was investigated for separation of benzene/cyclohexane mixture, The results reveal that the dope of AgNP would slightly destroyed the structure of GO, and the disorder degree of GO structure increased, the oxygen-containing functional groups of GO decreased in Ag* reduced to form AgNP. But the dope of AgNP which was helpful to improve the dispersion of AgNP-GO composite in the mixed matrix membrane, thus enhance the pervaporation performance of the mixed matrix membrane. However, the excess of AgNP-doping would lead to the aggregation of Ag particles on the GO surface, which depressed the pervaporation performance of the mixed matrix membrane When AgNP-doping reached 15% in GO-AgNP composite, the mixed matrix membrane demonstrates good
pervaporation perporty, and the separation factor reached 36.2 and the flux is 1 404 g'm2.h-l. Keywords: Ag nanoparticles; graphene oxide; polyimide; mixed matrix membrane; pervaporation
收稿日期：2016-01-11。收修改稿日期：2016-05-31。国家自然科学基金(No.21376218,21076190)资助项目。
*通信联系人。E-mail：wulg64@zjgsu.edu.cn；会员登记号：S060017423M。