Enhanced water flux through graphitic carbon nitride nanosheets membrane by incorporating polyacrylic acid

Membranes assembled from two‐dimensional (2‐D) layered materials have shown potential use in water purification. Recently, a 2‐D graphitic carbon nitride (g‐C3N4) nanosheets membrane exhibits considerable separation performance in water purification. In this study, to further improve this water sepa...

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Veröffentlicht in:AIChE journal Jg. 64; H. 6; S. 2181 - 2188
Hauptverfasser: Wang, Yanjie, Liu, Lingfei, Xue, Jian, Hou, Jiamin, Ding, Li, Wang, Haihui
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York American Institute of Chemical Engineers 01.06.2018
Schlagworte:
Antifouling
Antifouling substances
Carbon
Carbon nitride
Composite structures
g‐C3N4 nanosheets
Layered materials
membrane
Membranes
modification
Nanoparticles
Nanosheets
Polyacrylic acid
Purification
Rejection rate
Separation
Ultrafiltration
Water purification
ISSN:0001-1541, 1547-5905
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Zusammenfassung:Membranes assembled from two‐dimensional (2‐D) layered materials have shown potential use in water purification. Recently, a 2‐D graphitic carbon nitride (g‐C3N4) nanosheets membrane exhibits considerable separation performance in water purification. In this study, to further improve this water separation performance, polyacrylic acid (PAA) was introduced to tune the nanochannels formed between the g‐C3N4 nanosheets. The fabricated g‐C3N4‐PAA hybrid membranes possessed higher water flux without sacrificing much rejection rate compared with that of the g‐C3N4 membrane; however, noticeable fouling was observed upon addition of the PAA into the membrane composite structure. In addition, the effect of PAA on the morphology, surface hydrophilicity, separation performance, and antifouling properties of the g‐C3N4 membrane were examined in detail. Overall, incorporating PAA into the g‐C3N4 nanosheets membrane was an effective and convenient method to improve the water separation performance, which could promote the application of the 2‐D g‐C3N4 nanosheets membrane in practical ultrafiltration processes. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2181–2188, 2018
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0001-1541
1547-5905
DOI:10.1002/aic.16076