Industrially scalable Chitosan/Nylon-6 (CS/N) nanofiber-based reusable adsorbent for efficient removal of heavy metal from water

De Novo Ion-Exchange Membranes Based on Nanofibers

“…Chitosan is extensively used as an adsorbent because of its low cost, non-toxicity, and high content of amino and hydroxyl functional groups. Chitosan-based NFs are extensively researched for removal of metal ions such as As 5+ [ 68 ], Cr 6+ [ 69 ], and Cu 2+ [ 70 ]. For example, Min et al [ 68 ] investigated the adsorptive removal of arsenate using chitosan NFs.…”

Significantly improving the Cu2+ removal performance of conducting polymer‐based adsorbent from aqueous solution through cross‐linking modification

“…With the amount of crosslinking agent increasing, its strength increases, and its peak position is basically consistent with that of crosslinking agent, and the peak at around 1692 cm −1 is the result of the frequency decrease caused by its conjugation with C=C in the aromatic ring, the flexural vibration peak of N‐H at around 1528 cm −1. [ 30 The appearance of these peaks might be due the connection between the cross‐linking reagent and the P o PD molecular chain, and the attraction of carbonyl O to the lone pair electron on N. Meanwhile, the bond at about 1638 cm −1 was also arisen from the carbonyl groups, 26 the twisting mode of CH 2 at about 1375 cm −1,[ 31 the C‐O‐C stretching vibration absorption peak at about 1168 cm −1,[ 32 the peak at about 1015–1030 cm −1 was the C‐O flexural vibration peak, 32 all came from the cross‐linking agent. The peak area of the C‐O flexural vibration was increased with the increase in the mass fraction of the cross‐linking agent.…”

A robust and efficient lipase based nanobiocatalyst for phenothiazinyl-ethanol resolution

“…4,5 Meanwhile, for nanoparticles, it is difficult to disperse them in solution and further to recover and to reuse them; nanofibers can be easily separated and reused or applied in continuous flow processes. [6][7][8] Biopolymer nanofibers are intensively studied for biomedical applications such as tissue engineering for implants, wound dressings, and drug delivery, and also as supports for enzyme immobilization. Due to their large scale availability and low cost, biodegradability and biocompatibility, the use of biobased polymers has gained considerable interest for the development of sustainable and green processes.…”

“…4,5 Meanwhile, for nanoparticles, it is difficult to disperse them in solution and further to recover and to reuse them; nanofibers can be easily separated and reused or applied in continuous flow processes. 6–8…”