Activated carbons have been reported to be useful for adsorptive removal of the volatile anaesthetic sevoflurane from a vapour stream. The surface functionalities on activated carbons could be modified through aqueous oxidation using oxidising solutions to enhance the sevoflurane adsorption. In this study, an attempt to oxidise the surface of a commercial activated carbon to improve its adsorption capacity for sevoflurane was conducted using 6 mol/L nitric acid, 2 mol/L ammonium persulfate, and 30 wt per cent (wt%) of hydrogen peroxide (H₂O₂). The adsorption tests at fixed conditions (bed depth: 10 cm, inlet concentration: 528 mg/L, and flow rate: 3 L/min) revealed that H₂O₂ oxidation gave desirable sevoflurane adsorption (0.510 ± 0.005 mg/m²). A parametric study was conducted with H₂O₂ to investigate the effect of oxidation conditions to the changes in surface oxygen functionalities by varying the concentration, oxidation duration, and temperature, and the Conductor-like Screening Model for Real Solvents (COSMO-RS) was applied to predict the interactions between oxygen functionalities and sevoflurane. The H₂O₂ oxidation incorporated varying degrees of both surface oxygen functionalities with hydrogen bond (HB) acceptor and HB donor characters under the studied conditions. Oxidised samples with enriched oxygen functionalities with HB acceptor character and fewer HB donor character exhibited better adsorption capacity for sevoflurane. The presence of a high amount of oxygen functional groups with HB donor character adversely affected the sevoflurane adsorption despite the enrichment of oxygen functional groups with HB acceptor character that have a higher tendency to adsorb sevoflurane.

据报道，活性炭可用于从蒸汽流中吸附去除挥发性麻醉剂七氟醚。活性炭的表面官能度可以通过使用氧化剂的水相氧化进行修饰，以增强七氟醚的吸附能力。在这项研究中，尝试使用6 mol / L硝酸，2 mol / L过硫酸铵和30 wt％（wt％）的氢氧化商业活性炭的表面，以提高其对七氟醚的吸附能力。过氧化物（H ₂ O ₂）。在固定条件下（床深：10 cm，入口浓度：528 mg / L，流速：3 L / min）进行的吸附测试显示，H ₂ O ₂氧化产生所需的七氟醚吸附（0.510±0.005 mg / m ²）。使用H ₂ O ₂进行了参数研究，以通过改变浓度，氧化持续时间和温度以及真实溶剂的类似导体的筛选模型（COSMO-RS）来研究氧化条件对表面氧官能度变化的影响。应用于预测氧气功能与七氟醚之间的相互作用。H ₂ O ₂在研究条件下，氧化结合了不同程度的具有氢键（HB）受体和HB供体特征的两种表面氧官能度。具有富氧功能且具有HB受体特征和较少的HB供体特征的氧化样品对七氟醚具有更好的吸附能力。尽管具有较高的吸附七氟醚倾向的具有HB受体特性的氧官能团的富集，大量具有HB供体特征的氧官能团的存在不利地影响了七氟醚的吸附。