In this work, activated carbon was synthesized from lawn grass via its physical treatment. The lawn grass was washed with hydrochloric acid solution before heat treatment step at different temperatures in the presence of carbon dioxide (CO₂) gas. Activated carbon samples obtained from heat treatment process and raw grass samples were completely analyzed using scanning electron microscopy (SEM), thermogravimetric analyzer (TGA), Fourier transforms infrared (FTIR) spectroscopic, and X-ray diffraction (XRD). The surface area of activated carbon resulted from heat treatment of lawn grass in the presence of CO₂ was higher, i.e., 208 m²/g, as compared to raw grass, i.e., 0.0068 m²/g. The adsorption capacity was highest (i.e. 0.12 mmol/g at 25 °C and 1 bar for CO₂ adsorption) for activated carbon sample prepared at 750 °C. Therefore, activated carbon prepared from heat treatment of lawn grass can be a viable option for pollutants removal by using this low cost and effective adsorbent.

在这项工作中，活性炭是通过对草坪草进行物理处理而合成的。在存在二氧化碳（CO ₂）气体的情况下，在不同温度下的热处理步骤之前，用盐酸溶液洗涤草坪草。使用扫描电子显微镜（SEM），热重分析仪（TGA），傅立叶变换红外光谱（FTIR）和X射线衍射（XRD）对从热处理过程中获得的活性炭样品和原草样品进行了全面分析。与生草0.0068 m ²相比，在存在CO ₂的条件下对草坪草进行热处理得到的活性炭的表面积更高，即208 m ² / g。/G。在750°C下制备的活性炭样品的吸附容量最高（即在25°C下为0.12 mmol / g，CO ₂吸附为1 bar ）。因此，通过使用这种低成本，有效的吸附剂，对草坪草进行热处理制得的活性炭可以成为去除污染物的可行选择。