Preparation, environmental application and prospect of biochar-supported metal nanoparticles: A review
Abstract
Biochar is a low-cost, porous, and carbon-rich material and it exhibits a great potential as an adsorbent and a supporting matrix due to its high surface activity, high specific surface area, and high ion exchange capacity. Metal nanomaterials are nanometer-sized solid particles which have high reactivity, high surface area, and high surface energy. Owing to their aggregation and passivation, metal nanomaterials will lose excellent physiochemical properties. Carbon-enriched biochar can be applied to overcome these drawbacks of metal nanomaterials. Combining the advantages of biochar and metal nanomaterials, supporting metal nanomaterials on porous and stable biochar creates a new biochar-supported metal nanoparticles (MNPs@BC). Therefore, MNPs@BC can be used to design the properties of metal nanoparticles, stabilize the anchored metal nanoparticles, and facilitate the catalytic/redox reactions at the biochar-metal interfaces, which maximizes the efficiency of biochar and metal nanoparticles in environmental application. This work detailedly reviews the synthesis methods of MNPs@BC and the effects of preparation conditions on the properties of MNPs@BC during the preparation processes. The characterization methods of MNPs@BC, the removal/remediation performance of MNPs@BC for organic contaminants, heavy metals and other inorganic contaminants in water and soil, and the effect of MNPs@BC properties on the remediation efficiency were discussed. In addition, this paper summarizes the effect of various parameters on the removal of contaminants from water, the effect of MNPs@BC remediation on soil properties, and the removal/remediation mechanisms of the contaminants by MNPs@BC in water and soil. Moreover, the potential directions for future research and development of MNPs@BC have also been discussed.
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The sorption capacities of CSBC, H3PO4-CSBC and KOH-CSBC to MB were 43.1, 230.4, and 406.4 mg/g, respectively.
“The sorption capacities of CSBC, H3PO4-CSBC and KOH-CSBC to MB were 43.1mg · g -1 , 230.4mg · g -1 , and 406.4mg · g -1 ,respectively.”
From Modified biochar: synthesis and mechanism for removal of environmental heavy metals (2022) · cites this paper as Liu et al. (2020a)
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Modified biochar: synthesis and mechanism for removal of environmental heavy metals
Liu, Z., Xu, Z., Xu, L., Buyong, F., Chay, T. C., Li, Z., Cai, Y., Hu, B., Zhu, Y., & Wang, X. (2022) · Carbon Research · doi:10.1007/s44246-022-00007-3 · Cited by 426 · see citing works
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Perspectives of Engineered Biochar for Environmental Applications: A Review
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Covalent and Non-covalent Functionalized Nanomaterials for Environmental Restoration
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- Authors
- Liu, J., Jiang, J., Meng, Y., Aihemaiti, A., Xu, Y., Xiang, H., Gao, Y., & Chen, X.
- Affiliations
- Tsinghua University (CN)
- Corresponding author
- Jiang, Jianguo
- Venue
- Journal of Hazardous Materials
- Publisher
- Elsevier BV
- Published
- 2020-04
- Volume
- 388
- Pages
- 122026
- ISSN
- 0304-3894 (ISSN-L)
- OpenAlex
- W3000534137
- Cited by
- 356
- References
- 12
- Citations by year
- 2026: 41 · 2025: 61 · 2024: 77 · 2023: 63 · 2022: 64 · 2021: 36 · 2020: 14
- FWCI
- 2.28
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Hazardous Materials (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Major Science and Technology Program for Water Pollution Control and Treatment (2017ZX07202005)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
- Physical Sciences › Chemistry › Organic Chemistry › Nanomaterials for catalytic reactions
- Keywords
- biochar, metal nanoparticles, nanoparticle stabilization, adsorption, heavy metal removal, organic pollutant removal, water remediation, soil remediation, remediation mechanisms, nanoparticle synthesis
- MeSH terms
- Charcoal, Environmental Restoration and Remediation, Metal Nanoparticles
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