Graphene quantum dots doped poly(vinyl alcohol)hybrid membranes for desalination via pervaporation

作     者：Yunyun Wan Lulu Yao Peng Cui Yunyun Wan;Lulu Yao;Peng Cui

作者机构：School of Chemistry and Chemical EngineeringHefei University of TechnologyChina Anhui Province Key Laboratory of Controllable Chemical Reaction&Materials Chemical EngineeringHefei230009China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第63卷第11期

页      面：226-234页

核心收录：

学科分类：080706[工学-化工过程机械] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：Pervaporation Desalination Graphene oxide quantum dots Poly(vinyl alcohol) Membranes 

摘      要：Pervaporation desalination by highly hydrophilic materials such as poly(vinyl alcohol)(PVA)based separation membrane is a burgeoning technology of late ***,the improvement of membrane flux in pervaporation desalination has been a difficult ***,a novel hybrid membrane with doped graphene oxide quantum dots(GOQDs)which is rich in hydrophilic groups and small size into the matrix of PVA was prepared to improve the membrane *** membranes structures were described by field emission scanning electron microscopy(FESEM),atomic force microscopy(AFM),Fourier transform infrared(FT-IR),differential scanning calorimetry(DSC),thermogravimetric analysis(TGA)and X-ray diffraction(XRD).And more,Water contact angle,swelling degree,and pervaporation properties were carried out to explore the effect of GOQDs in PVA *** addition,GOQDs content in the hybrid membrane,NaCl concentration,and feed temperature were investigated ***,the hydrogen bonds between PVA chains were weakened by the interaction between GOQDs and PVA ***,the hybrid membrane with optimized doped GOQDs content,200 mg·L^(-1),displays a high membrane flux of 17.09 kg·m^(-2)·h^(-1)and the salt rejection is consistently greater than 99.6%.