副教授
硕士生导师
教师拼音名称:yujianhua
学历:博士研究生
学位:工学博士
职称:副教授
毕业院校:中科院上海硅酸盐研究所
邮箱:
2020-06-08 青岛科技大学毕业生最喜爱的老师
2019-12-31 青岛科技大学先进工作者
2016-12-31 青岛科技大学先进工作者
最后更新时间:..
关键字:LARGE-SCALE SYNTHESIS; ELECTRICAL-CONDUCTIVITY; NANOTUBE FIBERS; CVD SYNTHESIS; TEMPERATURE; NANOSTRUCTURES; NANOMATERIALS; MORPHOLOGY
摘要:During a chemical vapor deposition synthesis process of carbon fibers, copper-based catalyst particles tend to aggregate into larger secondary particles and lead to the growth of straight carbon fibers with large diameters. The introduction of silicon dioxide spheres can provide enough sites to uniformly disperse catalyst particles and prevent the agglomeration of adjacent catalyst particles, and thereby coiled carbon nanofibers are synthesized using common copper-based salts without special pretreatment, including copper chloride, copper nitrate and copper sulfate. The size of copper-based catalyst particles is about 10 to 15 nm. Also, effects of the concentration of copper-based salt catalyst and reaction temperature on coiled carbon fibers are investigated. Furthermore, silicon dioxide spheres can be removed easily by NaOH solution to obtain coiled carbon nanofibers.
卷号:102
期号:wu
是否译文:否