通过NH的化学气相沉积对木质活性炭进行表面改性以提高其微孔体积及对卡马西平的吸附性能
Surface Modification of Wood Activated Carbon by CVD of NH to Improve Its Micropore Volume and Adsorption to Carbamazepine.
作者信息
Zhou Xun, Zhong Yue, He Li, Sun Chengxin, Xiao Guoxue, Luo Hong, Ran Rongfen, Wu Changying, Zhang Ting, Ou Shuiping, Zhong Yongke
机构信息
Department of Pharmacy, Dafang County People's Hospital, Bijie, Guizhou, 551600, People's Republic of China.
School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, 563000, People's Republic of China.
出版信息
Int J Nanomedicine. 2025 Mar 15;20:3251-3267. doi: 10.2147/IJN.S495746. eCollection 2025.
OBJECTIVE
This study enhanced wood-activated carbon using ammonia chemical vapor deposition (NH-CVD) to improve its adsorption properties for carbamazepine (CBZ).
METHODS
Modification was done in a vacuum tube sintering furnace. We used X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) method, and Fourier Transform Infrared Spectroscopy (FTIR) for characterization and analysis. Kinetic adsorption and isothermal adsorption tests were carried out by UV spectrophotometry.
RESULTS
NH-CVD significantly increased the micropore volume and surface area, notably in the sample, and raised the nitrogen content on the carbon surface. The adsorption capacity of modified activated carbon () reached 130.81 mg/g, outperforming the unmodified () at 72.46 mg/g. FTIR results indicated strong hydrogen bonding with CBZ molecules.
CONCLUSION
NH-CVD modification improves CBZ adsorption on wood activated carbon by increasing micropore volume and enhancing hydrogen bonding, confirming a single-layer adsorption on a heterogeneous surface.
目的
本研究采用氨化学气相沉积法（NH-CVD）对木质活性炭进行改性，以提高其对卡马西平（CBZ）的吸附性能。
方法
在真空管烧结炉中进行改性。采用X射线光电子能谱（XPS）、布鲁诺尔-埃米特-泰勒（BET）法和傅里叶变换红外光谱（FTIR）进行表征和分析。通过紫外分光光度法进行动力学吸附和等温吸附试验。
结果
NH-CVD显著增加了微孔体积和表面积，尤其是在样品中，并提高了碳表面的氮含量。改性活性炭（）的吸附容量达到130.81 mg/g，优于未改性的（72.46 mg/g）。FTIR结果表明与CBZ分子形成了强氢键。
结论
NH-CVD改性通过增加微孔体积和增强氢键作用提高了木质活性炭对CBZ的吸附性能，证实了在非均相表面上的单层吸附。
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