Fabrication of Wood-Derived Carbon Aerogel/Mg(OH)<sub>2</sub> Bio-Composite and Its High Performance for Adsorption and Separation of Cadmium Ions
To address the need for reducing carbon emissions and enhancing the sustainable utilization of non-fossil resources, a one-step calcination strategy has been developed to fabricate hierarchical carbon aerogels from balsa wood. The resulting wood-derived carbon aerogels (WCA) were functionalized with...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | C |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-5629/11/2/32 |
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| Summary: | To address the need for reducing carbon emissions and enhancing the sustainable utilization of non-fossil resources, a one-step calcination strategy has been developed to fabricate hierarchical carbon aerogels from balsa wood. The resulting wood-derived carbon aerogels (WCA) were functionalized with Mg(OH)<sub>2</sub> to boost their environmental remediation potential. Comprehensive characterization using XRD, FT-IR, XPS, and SEM confirmed that the optimized WCA/Mg(OH)<sub>2</sub> composite (WCAMg) retained a three-dimensional hierarchical porous structure, and Mg(OH)<sub>2</sub> nanosheets were attached to it. The adsorption performance of WCAMg composites towards Cd<sup>2+</sup> was systematically investigated through controlled experiments, which focused on three critical variables (Mg(OH)<sub>2</sub> loading content, initial Cd<sup>2+</sup> concentration and solution ionic strength). The functionalized WCAMg demonstrated a maximum Cd<sup>2+</sup> adsorption capacity of 351.1 mg g<sup>−1</sup>—a tenfold improvement over pristine WCA. Combined with exceptional adsorption efficiency, this biomass-derived composite offers an eco-friendly, cost-effective solution for heavy metal ion remediation. Its scalable fabrication from renewable resources aligns with sustainable water treatment objectives, presenting the advantage of pollution mitigation. |
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| ISSN: | 2311-5629 |