超声喷雾热解法制备多孔碳纳米球及其掺杂改性研究

文章以蔗糖等为原料, 采用超声喷雾热解技术合成了一种多孔碳纳米球, 并对合成工艺条件进行一系列研究, 得到最佳的合成条件为温度 $ 800 \,^{\circ}C $ 、载气流速 $ 2.0 \,L/min $, 合成的多孔碳材料呈规则球状, 粒径在 $ 600 \sim 1500 \,nm $ 之间, 内部孔道丰富, 孔道直径在 $ 50 \sim 100 \,nm $ 之间。通过在前驱液中加入不同金属、非金属前体材料制备出具有铝、钴、铜锌、氮、碳纳米管及纳米二氧化钛等掺杂的复合多孔碳纳米球, 该研究对先进碳纳米材料的简便设计和快速合成具有一定的意义。

In this work, porous carbon nanospheres were synthesized by ultrasonic spray pyrolysis using sucrose. The technological conditions of synthesis were investigated, and the optimum synthesis conditions are $ 800\ ^{\circ}C $ and carrier gas flow rate of 2.0 L/min. The synthesized porous carbon material has regular spherical shape, with the particle size of 600-1500 nm and abundant internal pores with the diameter of 50-100 nm. And composite porous carbon nanospheres with aluminum, cobalt, copper, zinc, nitrogen, carbon nanotubes and nano titanium dioxide were easily prepared by adding different metal and non-metal precursor materials into the precursor solution. This work is beneficial to the simple design and rapid synthesis of advanced carbon nanomaterials.