Zhang et al. (2025): Honeycomb-Like Nitrogen-Doped Ultramicroporous Biochar for Efficient and Robust CO2 Capture

Chen Zhang, Duoyong Zhang, Xinqi Zhang, Linrui Chen, Xiaoou Chen, Yongqiang Tian, Liwei Wang IN: Fundamental Research, https://doi.org/10.1016/j.scitotenv.2025.178723

Honeycomb-like nitrogen-doped ultramicroporous biochar for CO₂ capture is synthesized through various methods utilizing biomass, urea, and KOH as raw materials, nitridation agent, and porogen, respectively. The resulting materials meticulously undergo comprehensive characterization, revealing densely packed ultramicropores arranged in honeycomb-like patterns. The biochar predominantly exists in a graphite state of carbon with sufficient defects and abundant functional groups, along with a high nitrogen content, thereby providing numerous CO₂ sorption sites.

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