Fabrication of nanofibrous adsorbent consisting of nylon 6 electrospun nanofibers and electrosprayed chitosan nanoparticles and its application in removal of Acid Red8 from water

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Document Type : Original Article

Authors

1 Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.

2 Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar , Iran

Abstract

In this research, nylon 6 nanofiber/chitosan nanoparticles (CS/N6NFs) adsorbent was fabricated by combining electrospinning and electrospraying methods. First, the nylon 6 nanofibrous substrate was made by electrospinning method, and then chitosan nanoparticles were electrosprayed on this substrate to make a adsorbent. The adsorbent was characterized by, field emission scanning electron microscopy (FESEM), contact angle and tensile test. FESEM studies showed that chitosan nanoparticles are uniformly distributed on the surface of nylon 6 electrospun nanofibers and are well connected to the fibers. The production of chitosan nanoparticles by electrospraying showed an almost uniform particle size distribution with an average size of about 110 nm. The role of chitosan in improving wettability was observed by reducing the contact angle from 64.06 to 53.80. Young's modulus values were obtained for N6NFs and Cs/N6NFs equal to 4.82 and 5.28 MPa, respectively. The performance of Cs/N6NFs adsorbent in removing acid red 8 (AR8) dye from aqueous solutions was investigated. Experiments showed that the value of 0.015 g of Cs/N6NFs adsorbent has the ability to remove more than 95% of AR8. Adsorption tests in batch mode indicate that the adsorbent designed to absorb AR8 after 5 times of reduction by NaOH still has a high absorption efficiency of 70%. The adsorption capacity of the adsorbent was calculated to be 195.16 mg.g-1 for AR8. The Langmuir model had a good fit with the experimental data of the adsorption isotherm. Kinetic studies showed that the adsorption data followed a pseudo-quadratic model.

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Applied Chemistry Today

Articles in Press, Accepted Manuscript
Available Online from 07 July 2024

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