Electrospinning Novel Sodium Alginate/MXene Nanofiber Membranes for Effective Adsorption of Methylene Blue

Author:

Li Meng1,Zhang Pingxiu1,Wang Qianfang1,Yu Ningya1ORCID,Zhang Xiaomin1,Su Shengpei1

Affiliation:

1. National and Local Joint Engineering Lab for New Petro-Chemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha 410081, China

Abstract

Understanding how to develop highly efficient and robust adsorbents for the removal of organic dyes in wastewater is crucial in the face of the rapid development of industrialization. Herein, d-Ti3C2Tx nanosheets (MXene) were combined with sodium alginate (SA), followed by electrospinning and successive Ca2+-mediated crosslinking, giving rise to a series of SA/MXene nanofiber membranes (NMs). The effects of the MXene content of the NMs on the adsorption performance for methylene blue (MB) were investigated systemically. Under the optimum MXene content of 0.74 wt.%, SA/MXene NMs possessed an MB adsorption capacity of 440 mg/g, which is much higher than SA/MXene beads with the same MXene content, pristine MXene, or electrospinning SA NMs. Furthermore, the optimum SA/MXene NMs showed excellent reusability. After the adsorbent was reused ten times, both the MB adsorption capacity and removal rate could remain at 95% of the levels found in the fresh samples, which indicates that the electrospinning technique has great potential for developing biomass-based adsorbents with high efficiency.

Funder

Excellent Youth Foundation of Hunan Educational Committee, China

Science and Technology Innovation 2025 Major Project of Ningbo

Guangzhou Lingwe Technology Co., Ltd.

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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