Biomass-derived porous carbon materials have a good application prospect in electrosorption because of their low cost, abundant natural resources, and excellent performance. In this work, three-dimensional interconnected structure porous carbon (CPC) was successfully synthesized from waste biomass chestnut shells by carbonization and chemical activation processes. The unique structure of CPC could offer superior double-layer capacitance and excellent conductivity. The as-obtained CPC was applied as an electrosorption electrode. In the deionization experiments, the removal efficiency of the CPC electrode in a 30 mg L^–1 chromium(VI) aqueous solution at 1.0 V was 90.5%. The electrosorption follows pseudo-second-order kinetics. The CPC electrode also presented good regeneration performance in the regeneration test. These results demonstrate that the as-prepared carbonaceous material is an ideal material for capacitive deionization electrodes.

中文翻译：

---

使用新型废生物质板栗壳碳电极通过电吸附有效去除铬 (VI)

生物质衍生的多孔碳材料由于成本低、资源丰富、性能优良等优点，在电吸附方面具有良好的应用前景。在这项工作中，通过碳化和化学活化过程，以废弃生物质板栗壳为原料成功合成了三维互连结构多孔碳（CPC）。CPC 的独特结构可以提供优异的双层电容和优异的导电性。所获得的 CPC 用作电吸附电极。在去离子实验中，CPC 电极在 30 mg L ^–11.0 V 的铬 (VI) 水溶液为 90.5%。电吸附遵循准二级动力学。CPC电极在再生试验中也表现出良好的再生性能。这些结果表明所制备的碳质材料是电容去离子电极的理想材料。