Size control of SBA-15 by tuning the stirring speed for the formation of CMK-3 with distinct adsorption performance

作者:Wang, Qi; Wang, Zhencai; Zheng, Tianhao; Zhou, Xiongping; Chen, Wei*; Ma, Dekun; Yang, Yun; Huang, Shaoming*
来源:Nano Research, 2016, 9(8): 2294-2302.
DOI:10.1007/s12274-016-1116-8

摘要

Controlling the size of SBA-15 can be beneficial for exploiting CMK-3, which has excellent structural parameters, for better performance in adsorption and/or catalytic processes. In this study, the width of freestanding SBA-15 rods was readily and successfully regulated by simply altering the stirring power during the synthesis. A higher stirring rate produced SBA-15 rods with larger width. Then, the size of the CMK-3 rods was adjusted by duplication of the different-sized SBA-15. The results show that the larger sized CMK-3 has higher specific surface area and pore volume, which led to a higher adsorption capacity and a faster adsorption rate. It is believed that the synthetic method reported here is powerful for developing better mesoporous carbon for application in water purification and catalysis.