Electrospun cellulose acetate/P(DMDAAC‐AM) nanofibrous membranes for dye adsorption

Abstract

In recent years, organic nanofibrous membranes have received more attention because of their excellent performance in wastewater treatment. In this study, the soluble poly(dimethyldiallylammonium chloride‐acrylamide) (P(DMDAAC‐AM)) was first synthesized by aqueous copolymerization. Afterward, cellulose acetate (CA)/P(DMDAAC‐AM) composite nanofibrous membranes were electrospun and utilized to remove acid black 172 from simulated wastewater. When the proportion of P(DMDAAC‐AM) to CA was 20, 30, and 40 wt %, the equilibrium adsorption capacities were 116, 159, and 192 mg g−1, respectively. The adsorption capacity of CA/P(DMDAAC‐AM) composite nanofibrous membrane showed a well linear relationship with the average fiber diameter. When the average fiber diameter was 185 nm, the adsorption capacity of 231 mg g−1 was achieved. The adsorption kinetics of CA/P(DMDAAC‐AM) membranes with various fiber diameters was all consistent with the pseudo‐second‐order model. The rate‐limiting step was primarily controlled by chemisorption. The adsorption isothermal data fitted well with the Langmuir isotherm model. The prepared CA/P(DMDAAC‐AM) nanofibrous membrane was effective to remove the acid black 172 in the environmental interested pH range of 4.0–10.0. As an effective dye adsorbent, CA/P(DMDAAC‐AM) nanofibrous membrane shows wide application prospect with its excellent adsorption performance. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48565.

The green, ultrafine cellulose-based porous nanofibrous membranes for efficient heavy metal ion removal through incorporation of chitosan by various electrospinning ways

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Theoretical and Experimental Optimization of the Graft Density of Functionalized Anti-Biofouling Surfaces by Cationic Brushes

“…Absorbance at 2290 cm −1 became weaker after immobilization by Br [ 38 ]. A peak corresponding to –C=O group PU-PDMDAAC appeared at 1750 cm −1 , while a peak corresponding to –CH 3 [ 44 ] was detected at 1250 cm −1 . Methyl asymmetric stretching vibrations are characterized by absorption in the 2800–2900 cm −1 region.…”

Natural and Synthetic Fiber‐Based Adsorbents for Water Remediation

“…Swellable electrospun fibers Methylene blue 1834.97 mg g −1 [ 116] Phenolate immobilized fiber Brilliant cresyl blue 890.10 mg g −1 [ 108] PVA/chitosan electrospun nanofibrous membrane Direct red 80 790.00 mg g −1 [ 110] C/NiO-ZnO nanocomposite fibers Congo red 613.00 mg g −1 [ 109] Porous N-carbon/silica nanofibers Methylene blue 397.5 mg g −1 [ 117] Cellulose acetate/poly (dimethyldiallylammonium chloride-acrylamide) nanofibrous membranes Acid black 172 231.00 mg g −1 [ 118] Mesoporous carbon nanofibers Methylene blue 119.21 mg g −1 [ 119] Methyl orange 101.35 mg g −1 [ 119] Poly(methyl methacrylate)/zeolite nanofibrous membranes ZnO nanorods on electrospun fibers Rhodamine B 96.3% [ 107] Methylene blue 92.2% [ 107] Activated carbon fibers-cathodic electro-adsorption Acid orange 7 94.7% [ 111] Alginate (Alg)-based nanofibrous membrane Acid red 14 93.0% [ 128] Basic blue 41 71% [ 128] standard method for the production of nanoscale mats with high surface areas for chemical modification. Superior performance for dye removal has been achieved by modification of natural fibers with amine incorporation, while the presence of functional groups, such as hydroxyl, carboxyl, and carbonyl, in corn fibers and the lignocellulose residue from sugarcane bagasse resulted in outstanding performance for trace metal ion removal.…”