Work

Surface Modification of Wood Activated Carbon by CVD of NH3 to Improve Its Micropore Volume and Adsorption to Carbamazepine

Year: 2025

Type: article

Abstract: Objective: This study enhanced wood-activated carbon using ammonia chemical vapor deposition (NH 3 -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 3 -CVD significantly increased the micropore volume and surface area, notably in the W-6 sample, and raised the nitrogen content on the carbon surface. The adsorption capacity of modified activated carbon ( W-7 ) reached 130.81 mg/g, outperforming the unmodified ( W-0 ) at 72.46 mg/g. FTIR results indicated strong hydrogen bonding with CBZ molecules. Conclusion: NH 3 -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. Keywords: nitrogen doped activated carbon, carbamazepine, chemical vapor deposition, hemoperfusion adsorbent

Source: International Journal of Nanomedicine

DOI: 10.2147/ijn.s495746