超声辅助氧化石墨烯的制备

Preparation of Graphene Oxide by Ultrasonic Assistance Method

通过在中温段超声辅助的方式,采用改性悍马氧化法制备了一系列氧化石墨烯(GO),研究了超声时间、超声温度等因素对所得GO形态、结构、及性能的影响。研究结果表明:超声辅助的方法能有效促进石墨片层的剥离及深度氧化,超声温度及超声时间对GO的形态与结构均有一定影响,在无须高温水解的条件下,当超声温度为30~40℃,超声时间为3 h,即可得到氧化较为充分,分散性能好的GO材料。

Graphene oxide （ GO） was prepared by modified hummers method with the help of ultrasonic vibration under mid - temperature stage. The influences of the ultrasonic time and ultrasonic temperature on the morphology, structure and properties of GO were investigated extensively. The results showed that ultrasound assisted method could effectively promote the peeling process and oxidative depth of graphite oxide layer. Both ultrasonic temperature and ultrasonic time were related to the morphology and structure of GO. Without high temperature hydrolysis p ro cess, graphite could be oxidized sufficiently through a th re e -h o u r ultrasonication method at the temperature of 30 ~ 40 ℃.