Volatile organic compounds (VOCs), which are usually organic compounds with boiling point in the range of 50 to 260°C, pose a serious threat to human health and ecological environment. In order to find an adsorbent with excellent adsorption effect on VOCs, activated carbon was prepared from corn bran partially degraded by Trichoderma viride, and the adsorption performance of the optimized porous carbon materials on toluene was studied. Physical and chemical properties (such as specific surface area, pore size distribution, and surface functional groups) of the activated carbon were characterized by scanning electron microscope (SEM), N₂ adsorption/desorption experiences, Fourier-transform infrared (FTIR), and Raman and X-ray diffraction (XRD). The results showed that the specific surface area of corn bran reached 1896 m²/g and the total pore volume was 1.04 cm³/g after 15 days of microbial pretreatment. Dynamic simulation of adsorption experiment found that the saturated adsorption capacity of the pretreated carbon material was 237 mg/g at 100 ppm toluene concentration, which was 1.58 times of that of corn bran without microbial pretreatment. Generally, the improvement of adsorption performance may be mainly attributed to the increase of specific surface area, pore volume and the decrease of surface acidic groups.

挥发性有机化合物（VOCs）通常是沸点在50~260°C范围内的有机化合物，对人类健康和生态环境构成严重威胁。为了寻找一种对VOCs具有优异吸附效果的吸附剂，以绿色木霉部分降解的玉米麸为原料制备活性炭，并研究了优化后的多孔碳材料对甲苯的吸附性能。通过扫描电子显微镜（SEM）、N ₂吸附/解吸体验、傅里叶变换红外 (FTIR)、拉曼和 X 射线衍射 (XRD)。结果表明，经过15天的微生物预处理后，玉米麸皮的比表面积达到1896 m ² /g，总孔容为1.04 cm ³ /g。吸附实验动态模拟发现，预处理后的炭材料在甲苯浓度为100 ppm时的饱和吸附量为237 mg/g，是未经微生物预处理的玉米麸的1.58倍。一般来说，吸附性能的提高可能主要归因于比表面积、孔容的增加和表面酸性基团的减少。