Dai Kewei, Wang Fenghe, Jiang Wei, Chen Yajun, Mao Jing, Bao Jian
Jiangsu Province Key Laboratory of Environmental Engineering, School of Environment, Nanjing Normal University, Nanjing, 210023, China.
Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geography Science, Nanjing Normal University, Nanjing, 210023, China.
Nanoscale Res Lett. 2017 Sep 6;12(1):528. doi: 10.1186/s11671-017-2295-2.
Novel reusable magnetic carbon microspheres (MCMs) were prepared by hydrothermal method with glucose as carbon source and FeO nanoparticles as magnetic raw materials. And adsorption performance of MCMs for sulfonamide removal from water was investigated in detail. The results indicated that the calcination temperature and calcination time had significant effects on the surface area and its volume porous of MCMs. When MCMs were calcined in 600 °C for 1 h, the surface area and volume porous of MCMs were 1228 m/g and 0.448 m/g, respectively. The adsorption results showed that the adsorption data fitted well with the Langmuir isotherm model and followed pseudo-second-order kinetics. When the pH value was changed from 4.0 to 10.0, the adsorption capacity of MCMs for sulfonamide was decreased from 24.6 to 19.2 mg/g. The adsorption capacity of as-synthesized MCMs achieved 18.31 mg/g after it was reused four times, which exhibited a desirable adsorption capacity and reusability.
以葡萄糖为碳源、FeO纳米颗粒为磁性原料，采用水热法制备了新型可重复使用的磁性碳微球（MCMs）。并详细研究了MCMs对水中磺胺类物质的吸附性能。结果表明，煅烧温度和煅烧时间对MCMs的比表面积及其孔容有显著影响。当MCMs在600℃下煅烧1h时，其比表面积和孔容分别为1228m²/g和0.448m³/g。吸附结果表明，吸附数据与Langmuir等温线模型拟合良好，且符合准二级动力学。当pH值从4.0变为10.0时，MCMs对磺胺类物质的吸附量从24.6mg/g降至19.2mg/g。合成的MCMs重复使用4次后吸附量达到18.31mg/g，表现出良好的吸附性能和可重复使用性。
