The Effect of Graphene Oxide Nano Sheets In Nanofiltration Membranes

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 306

نسخه کامل این مقاله ارائه نشده است و در دسترس نمی باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

NSCEI09_126

تاریخ نمایه سازی: 19 آبان 1398

چکیده مقاله:

Today, filtration is considered as one of the most effective means of separation processes and purification in the world. Nanofiltration attracted scientist to it selfish because its best performance seen separation. But it has some deficiency too and for improve its characterizes against fouling, hydrophilicity/hydrophobicity, low flux and etc. Many research has been take occur. it seems addition nanoparticle (such as Fe2O3, Fe3O4, TiO2, ZnO, GO and etc.) to membrane is a good way for improve nanofiltration operation. Graphene oxide is one the nanoparticles used into the membrane. The structure of GO nanosheets consists of basal planes decorated mainly with hydroxyl functional groups as well as nanosheet edges containing carboxylic acids. The potential of GO membranes is linked to its abundant functional groups, including epoxide, carboxyl and hydroxyl, which provide specific reactive sites and hydrophilic properties. This functional group of the graphene oxide react with the basic polymer of membrane and it make membrane with higher performance. There are some reports about the grafting of transition metal Schiff base complexes on the surface of graphene nanosheets as efficient catalysts for organic reactions. However, when GO membranes are placed in an aqueous solution, the spacing between the GO sheets increases up to 1.3 nm due to the effect of hydration. To solve this issue, works has been done to narrow the interlayer spacing for ion passage either by physical confinement or chemical decoration. In this study explains more about the graphene oxide and the characterizes that the graphene oxide gives to nanofiltration membrane and how it prefers membranes performances.

نویسندگان

A.R Moghadassi

Department of Chemical Engineering, Arak University, Arak, Iran

S Karami

Department of Chemical Engineering, Arak University, Arak, Iran

S BandehAli

Department of Chemical Engineering, Arak University, Arak, Iran

A Aliyari

Department of Chemical Engineering, Arak University, Arak, Iran