One-step high-efficiency microwave synthesis of N-doped bamboo biochar for tetracycline degradation
Document Type
Article
Publication Date
2-19-2025
Abstract
N-doped bamboo biochar (NBB) was successfully synthesized through one-step, rapid pyrolysis (e.g., 10 min) using urea and urea nitrate impregnated bamboo particles exposed to low power (e.g., 460 W) microwave radiation. NBB-460 exhibited high specific surface area of 876.1 m2/g and outstanding catalytic performance for tetracycline hydrochloride (TCH) degradation. The TCH degradation efficiency reached to 94.3 % with the optimized catalytic condition (i.e., 0.2 g/L NBB-460, 3 mM PMS, 50 mg/L TCH, 25 ℃, without pH regulation). The density functional theory calculation showed that the graphitic nitrogen and pyridinic nitrogen of NBB-460 served as active sites for peroxymonosulfate activation and TCH degradation. The quenching test, electron paramagnetic resonance spectra, and electrochemical measurements indicated that tetracycline hydrochloride underwent degradation via radical (O2•−), non-radical (1O2) pathways, and surface electron transfer. This study introduces an energy-efficient and time-effective method for converting biomass to N-doped biochar as highly efficient peroxymonosulfate activator for environmental applications.
Publication Source (Journal or Book title)
Separation and Purification Technology
Recommended Citation
Huang, X., Li, F., Zhang, X., Xu, S., Liu, H., Qiu, C., He, Y., Li, M., Jiang, Y., Jia, S., de Hoop, C., Chen, Y., Qi, J., & Huang, X. (2025). One-step high-efficiency microwave synthesis of N-doped bamboo biochar for tetracycline degradation. Separation and Purification Technology, 354 https://doi.org/10.1016/j.seppur.2024.129003
