Amino-functionalized graphene quantum dots (aGQDs)-embedded thin film nanocomposites for solvent resistant nanofiltration (SRNF) membranes based on covalence interactions
Abstract
Solvent resistant nanofiltration (SRNF) membranes are highly demanded in processing organic solutions especially those contain large molecules with molecular weight between 200 to 2000 Da, yet they have some drawbacks such as relatively poor solvent resistance and low solvent permeance. The current work presented an innovative class of amino-functionalized graphene quantum dots (aGQDs) embedded thin film nanocomposites (TFN) for SRNF membranes which were prepared via interfacial polymerization (IP) and subsequent steps (chemical imidization, crosslinking, and solvent activation). The prepared membranes enabled covalent interactions not only between the IP skin layer and the substrate, but also between the IP layer and the embedded aGQDs. The ethanol permeance and surface porosity increased by 44% and 69%, respectively, with the embedment of aGQDs under the optimal conditions, while the Rhodamine B (RDB, 479 Da) rejection maintained essentially stable above 99%. Furthermore, our novel membranes exhibited excellent long-term stability, with a rejection of over 99% for Rose Bengal (RB, 1017 Da) during the continuous filtration of 100 mg L-1 RB/N,N-dimethyl formamide (DMF) solution at room temperature for more than 768 h. They also exhibited good organic solvent resistance and high-temperature tolerance in both DMF and NMP solvents, with a RDB rejection of over 99%more »
- Authors:
-
[2];
- Ocean Univ. of China, Qingdao (China)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1543194
- Alternate Identifier(s):
- OSTI ID: 1693505
- Grant/Contract Number:
- AC05-00OR22725; WBS2.5.5.507
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Membrane Science
- Additional Journal Information:
- Journal Volume: 588; Journal Issue: C; Journal ID: ISSN 0376-7388
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Li, Shuxuan, Li, Can, Su, Baowei, Hu, Michael, Gao, Xueli, and Gao, Congjie. Amino-functionalized graphene quantum dots (aGQDs)-embedded thin film nanocomposites for solvent resistant nanofiltration (SRNF) membranes based on covalence interactions. United States: N. p., 2019.
Web. doi:10.1016/j.memsci.2019.117212.
Li, Shuxuan, Li, Can, Su, Baowei, Hu, Michael, Gao, Xueli, & Gao, Congjie. Amino-functionalized graphene quantum dots (aGQDs)-embedded thin film nanocomposites for solvent resistant nanofiltration (SRNF) membranes based on covalence interactions. United States. https://doi.org/10.1016/j.memsci.2019.117212
Li, Shuxuan, Li, Can, Su, Baowei, Hu, Michael, Gao, Xueli, and Gao, Congjie. Thu .
"Amino-functionalized graphene quantum dots (aGQDs)-embedded thin film nanocomposites for solvent resistant nanofiltration (SRNF) membranes based on covalence interactions". United States. https://doi.org/10.1016/j.memsci.2019.117212. https://www.osti.gov/servlets/purl/1543194.
@article{osti_1543194,
title = {Amino-functionalized graphene quantum dots (aGQDs)-embedded thin film nanocomposites for solvent resistant nanofiltration (SRNF) membranes based on covalence interactions},
author = {Li, Shuxuan and Li, Can and Su, Baowei and Hu, Michael and Gao, Xueli and Gao, Congjie},
abstractNote = {Solvent resistant nanofiltration (SRNF) membranes are highly demanded in processing organic solutions especially those contain large molecules with molecular weight between 200 to 2000 Da, yet they have some drawbacks such as relatively poor solvent resistance and low solvent permeance. The current work presented an innovative class of amino-functionalized graphene quantum dots (aGQDs) embedded thin film nanocomposites (TFN) for SRNF membranes which were prepared via interfacial polymerization (IP) and subsequent steps (chemical imidization, crosslinking, and solvent activation). The prepared membranes enabled covalent interactions not only between the IP skin layer and the substrate, but also between the IP layer and the embedded aGQDs. The ethanol permeance and surface porosity increased by 44% and 69%, respectively, with the embedment of aGQDs under the optimal conditions, while the Rhodamine B (RDB, 479 Da) rejection maintained essentially stable above 99%. Furthermore, our novel membranes exhibited excellent long-term stability, with a rejection of over 99% for Rose Bengal (RB, 1017 Da) during the continuous filtration of 100 mg L-1 RB/N,N-dimethyl formamide (DMF) solution at room temperature for more than 768 h. They also exhibited good organic solvent resistance and high-temperature tolerance in both DMF and NMP solvents, with a RDB rejection of over 99% and an ethanol permeance of about 38 L m-2 h-1 MPa-1 after being immersed in DMF at 80 °C for 248 h, and a RDB rejection of over 99% and an ethanol permeance of about 41 L m-2 h-1 MPa-1 after being immersed in NMP at 80 °C for 232 h. The results demonstrated that the aGQDs-embedded TFN OSN membrane has vast potential in SRNF applications.},
doi = {10.1016/j.memsci.2019.117212},
journal = {Journal of Membrane Science},
number = C,
volume = 588,
place = {United States},
year = {Thu Jun 27 00:00:00 EDT 2019},
month = {Thu Jun 27 00:00:00 EDT 2019}
}
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Figures / Tables:
Fig. 1: Schematic illustration of the proposed formation mechanism for aGQDs
Figures / Tables found in this record: