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Facile synthesis of magnetic porous carbon nanosheets as efficient As(III) adsorbent

Yiwei Luo, Zeliang Wu, Qihui Guan, Shixia Chen, and Daishe Wu

School of Resource and Environment, Nanchang University, Nanchang, People’s Republic of China

 

E-mail: shixiachen@ncu.edu.cn

Received: 8 March 2022  Accepted: 2 August 2022

Abstract:

Herein, magnetically modified biomass camphor seeds husk (MBC) was developed as an efficient biosorbent for remediation of arsenite (As(III))-polluted wastewater. The results of the SEM + EDS, TEM, XRD, and BET demonstrate the as-obtained adsorbents were Fe species impregnated amorphous porous carbon nanosheets. The effects of adsorbent dosage, solution pH, contact time, initial concentration, and co-existing ions were systemically investigated. As a result, the MBC delivers a maximum adsorption capacity of 39.7 mg/g based on the Langmuir model at natural pH. Moreover, the MBC could also maintain superior As(III) removal performance in wide pH values ranging from 5 to 10. And the commonly coexisting anions showed slight effect on the As(III) removal. FT-IR and XPS of the MBC before and after As(III) adsorption revealed the removal mechanism was dominated by the surface complexation, oxidation, and H-bonds.

Keywords: Biosorbent; Carbon nanosheets; Arsenite; Fe3O4

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02410-x

 

Chemical Papers 76 (12) 7295–7303 (2022)

Wednesday, February 21, 2024

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