Thin-film nanocomposite nanofiltration membrane with enhanced desalination and antifouling performance via incorporating L-aspartic acid functionalized graphene quantum dots

Wu，Chenpu1,2; Xie，Quanling2,4; Hong，Zhuan2,4; Shen，Lufang1,2; Yu，Tong2,4; Guo，Honghui2,4; Xiong，Ying3; Zhang，Guoliang5; Lu，Yinghua1; Shao，Wenyao1

2021-01-15

10.1016/j.desal.2020.114811

DESALINATION   影响因子和分区

0011-9164

1873-4464

To fabricate thin-film nanocomposite (TFN) nanofiltration (NF) membrane with enhanced desalination and antifouling performance, L-aspartic acid functionalized graphene quantum dots (AGQDs), integrating the advantages of L-aspartic acid and graphene quantum dots (GQDs), were successfully synthesized and incorporated into the polyamide (PA) selective layer via interfacial polymerization (IP) method. The fabricated TFN membranes with various AGQDs contents were systematically characterized by the microstructures, surface properties, desalination, and antifouling performance. The optimal AGQDs concentration in the aqueous solution reaches 3000 ppm, the resultant TFN-3 membrane exhibits an outstanding water permeance of 18.5 LMH/bar, 60.9% higher than the TFC-blank membrane. Meanwhile, the TFN-3 membrane possesses a higher NaSO rejection than that of the TFC-blank membrane (98.4% vs 95.7%). Additionally, the TFN-3 membrane shows superior antifouling performance over the TFC-blank membrane in the presence of either the negatively charged foulant (BSA) or the positively charged foulant (lysozyme). An appropriate amount of AGQDs added into aqueous solution favors the formation of a smooth, thin, hydrophilic, and electrically neutral selective layer. As a result, the overall separation performance of the TFN-3 membrane, especially the desalination and antifouling performance, are significantly enhanced with the help of AGQDs. Therefore, the incorporation of amino acid-functionalized GQDs into the PA selective layer presents a novel strategy to produce a high-performance NF membrane for water desalination.

Desalination Graphene quantum dots L-aspartic acid Nanofiltration Thin-film nanocomposite

SCI ; EI

英语

其他

Scientific Research Foundation of Third Institute of Oceanography, MNR[2019012] ; Fundamental Research Funds for Technology Planning Project of Xiamen City, China[3502Z20183016] ; National Natural Science Foundation of China[21736009] ; Science & Technology Planning Project of Fujian Province[2019H0049] ; Xiamen Ocean Research and Development Institute[K200103]

Engineering ; Water Resources

Engineering, Chemical ; Water Resources

WOS:000592540500001

ELSEVIER

20204409430121

Amino acids ; Nanocomposite films ; Nanofiltration membranes ; Thin films ; Water filtration ; Nanocrystals ; Graphene ; Nanocomposites ; Sodium sulfate ; Semiconductor quantum dots ; Desalination

Water Treatment Techniques:445.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Chemical Plants and Equipment:802.1 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Solid State Physics:933 ; Crystalline Solids:933.1

CHEMISTRY

2-s2.0-85094195207

Scopus

1.Department of Chemical and Biochemical Engineering,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen,361005,China
2.Technology Innovation Center for Exploitation of Marine Biological Resources,Third Institute of Oceanography,Ministry of Natural Resources,Xiamen,361005,China
3.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources,Xiamen,361005,China
5.Institute of Oceanic and Environmental Chemical Engineering,State Key Lab Breeding Base of Green Chemical Synthesis Technology,Zhejiang University of Technology,Hangzhou,310014,China

Wu，Chenpu,Xie，Quanling,Hong，Zhuan,et al. Thin-film nanocomposite nanofiltration membrane with enhanced desalination and antifouling performance via incorporating L-aspartic acid functionalized graphene quantum dots[J]. DESALINATION,2021,498.

Wu，Chenpu.,Xie，Quanling.,Hong，Zhuan.,Shen，Lufang.,Yu，Tong.,...&Shao，Wenyao.(2021).Thin-film nanocomposite nanofiltration membrane with enhanced desalination and antifouling performance via incorporating L-aspartic acid functionalized graphene quantum dots.DESALINATION,498.

Wu，Chenpu,et al."Thin-film nanocomposite nanofiltration membrane with enhanced desalination and antifouling performance via incorporating L-aspartic acid functionalized graphene quantum dots".DESALINATION 498(2021).