Synthesis of Mesoporous Carbon Using Halloyiste As Template

Mesoporous carbons with "core-shell" structure were synthesized using halloysite as template and sucrose as carbon precursor by a template method. Field-emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), nitrogen adsorption, X-ray diffraction, Raman spectra and Thermogravimetry (TG) were employed to cheracterize the as-synthesized materials. Results indicate that the morphology and structure of the templated carbons are similar to that of halloysite. The carbons exhibit higher specific surface area (945 m(2)/g and 1147 m(2)/g), higher pore volumes and mesopore volume fraction than that of halloysite. The carbons present high purity and amorphous structure. Raising the carbonization temperature, the Raman characteristic parameter (R) of the carbons decreases and their decomposition temperature increases from 563 degrees C to 623 degrees C. At the same time, the formation mechanism of the carbons and their pores is also discussed.Materials Science, CeramicsSCI(E)EI中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)1zhoushuhui888@163.com; xychun@pku.edu.cn6584-5882