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Fabrications and Properties of Heteroatom-Based Co-Doped Biochar for Environmental Application: A Review

Yang, Meizhi, Luo, Suxing, Zeng, Ping, Wu, Yuanhui·2025·Separations
DOI 10.3390/separations12020020
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Abstract

For the past few years, biochar has emerged as a promising material for the removal of various pollutants from aquatic environments, owing to its advantageous characteristics, such as tunable porosity, abundant surface functional groups, ease of modification, and relative stability. Co-doping biochar with heteroatoms significantly enhances its surface properties by introducing additional functional groups and surface defects, which facilitate the adsorption and catalytic degradation of pollutants. This review conducts bibliometric analyses of relevant publications, synthesis methodologies, applications, and reaction mechanisms of co-doped biochar as an adsorbent and catalyst for contaminant removal, due to the synergistic effects of doping elements and biochar features. Furthermore, co-doping strategies and associated properties including specific surface area (SSA), surface functional groups, and defects of biochar are analyzed. Finally, future research directions are proposed to improve the efficiency of biochar in water and soil remediation applications. In summary, this review advances the frontier of research on heteroatom-based co-doped biochar and offers new insights into strategies for effective contaminant removal.

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Metadata

Authors
Yang, M., Luo, S., Zeng, P., & Wu, Y.
Venue
Separations
Publisher
MDPI AG
Published
2025-01-22
Volume
12
Issue
2
Pages
20
ISSN
2297-8739
DOI
10.3390/separations12020020
Cited by
20
References
4
Language
en
Licence
creativecommons.org/licenses/by/4.0/ (vor)
Funders
  • Zunyi Science and Technology Program Project (Zunshikehe HZ [2022]136, Qian Kehe Jichu (2022) normal 573, QJHKYZ [2018]004, BS [2023]14, [2024]06)
  • Guizhou Provincial Science and Technology Projects (Zunshikehe HZ [2022]136, Qian Kehe Jichu (2022) normal 573, QJHKYZ [2018]004, BS [2023]14, [2024]06)
  • Special Key Laboratory of Electrochemistry for Materials of Guizhou Province (Zunshikehe HZ [2022]136, Qian Kehe Jichu (2022) normal 573, QJHKYZ [2018]004, BS [2023]14, [2024]06)
  • Research Fund for the Doctoral Program of Zunyi Normal University (Zunshikehe HZ [2022]136, Qian Kehe Jichu (2022) normal 573, QJHKYZ [2018]004, BS [2023]14, [2024]06)
  • innovation team project of Zunyi Normal University (Zunshikehe HZ [2022]136, Qian Kehe Jichu (2022) normal 573, QJHKYZ [2018]004, BS [2023]14, [2024]06)

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