Pickering乳液法制备硼亲和微球及其吸附木樨草素性能研究

Preparation of Boron Affinity Microspheres by Pickering Emulsion and Adsorption Performance of Luteolin

研究采用纳米Al_(2)O_(3)粒子稳定Pickering乳液,3-氨基苯硼酸作为功能单体,制备了具有硼亲和功能的Al_(2)O_(3)@聚甲基丙烯酸甲酯(Al_(2)O_(3)@MMA-BA)微球,并用于溶液中木樨草素(LTL)的吸附分离。用扫描电镜、傅里叶变换红外光谱、比表面分析和热重分析等方法探究Al_(2)O_(3)@MMA-BA微球的理化性质。结果表明,纳米Al_(2)O_(3)粒子能很好地稳定Pickering乳液,所制备的Al_(2)O_(3)@MMA-BA微球有更大的比表面积。吸附实验结果表明,pH为8.5、温度为318 K时,Langmuir模型最大吸附量为65.46 mol·g^(-1)。同时,Al_(2)O_(3)@MMA-BA微球具有良好的再生能力。

Al_(2)O_(3)@MMA-BA boron affinity microspheres were prepared by Pickering emulsion polymerization with nanometer Al_(2)O_(3) as stabilizer for emulsion,and 3-amino phenyl boron acid was used as the functional monomer in emulsion,and were used for the adsorption remove of luteolin(LTL).The physicochemical properties of Al_(2)O_(3)@MMA-BA microspheres were investigated by methods such as scanning electron microscopy,Fourier transform infrared spectroscopy,specific surface analysis and thermogravimetric analysis.The results indicated that nanometer Al_(2)O_(3) can stabilize Pickering emulsion well,and Al_(2)O_(3)@MMA-BA microspheres had a larger specific surface area.The maximum adsorption capacity calculated by Langmuir model reached 65.46 mol·g^(-1) when the pH was 8.5 and the temperature was 318 K.At the same time,Al_(2)O_(3)@MMA-BA microspheres also exhibited excellent regeneration capacity.