Open Access

ARTICLE

Preparation of N,S-Doped Biochar via Modulating Chitosan and Sodium Dodecyl Benzene Sulfonate Interaction and Its Adsorption Performance

Jun-Jie Yang¹, Ran An¹, Jing-Heng Nie¹, Hao-Miao Ma¹, Yu-Qing Yan¹, Yuan-Ru Guo^1,*, Qing-Jiang Pan^2,*

1 Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin, 150040, China
2 Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China

* Corresponding Authors: Yuan-Ru Guo. Email: ; Qing-Jiang Pan. Email:

(This article belongs to the Special Issue: Biochar Based Materials for a Green Future)

Journal of Renewable Materials 2025, 13(5), 885-900. https://doi.org/10.32604/jrm.2025.02024-0066

Received 19 December 2024; Accepted 25 February 2025; Issue published 20 May 2025

Abstract

To achieve the sustainable development and carbon neutral target, biomass chitosan (CS) was used to prepare N,S-doped biochar (NSB) with the assistance of sodium dodecyl benzene sulfonate (SDBS). The synthetic route was developed, which does not require the activation that is frequently-used for active carbon materials. By manipulating their interaction, SDBS was deposited with CS in neutral and basic conditions. Subsequent calcination successfully has access to NSB. It features with hierarchical porous structure and abundant functional groups. The dually-doped NSB bears excellent adsorption performance towards chlortetracycline (CTC). The adsorption capacity reaches 101.3 mg g⁻¹ within 4 h. It is 200% higher than that of N-doped biochar (NB) prepared by only CS. The renewable and cost-effective raw materials and simple preparation method would enable NSB to be a good candidate for remedying antibiotics in the environment.

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Keywords

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