Controlling the size and quantity of defects on carbon materials

用氧气和间氯过氧苯甲酸氧化纳米碳材料，然后进行热处理，从而引入空位缺陷。为了控制空位缺陷的大小，用透射电子显微镜、X射线光电子能谱和密度泛函理论计算对缺陷结构进行了详细的分析。结果，氧的氧化甚至在250℃以下进行，一氧化碳、二氧化碳和空位缺陷通过羰基和内酯基团形成。通过富勒烯的环氧化，形成了环氧基、羰基和内酯基团。环氧基和内酯基团减少，羰基和碳键保持不变。用透射电子显微镜观察到了空位缺陷，但今后还需要证明空位缺陷是通过热处理产生的。

Vacancy defects were introduced by oxidizing nanocarbon materials with oxygen and m-chloroperoxybenzoic acid, followed by heat treatment. To control the size of the vacancy defect, the defect structure was analyzed in detail by transmission electron microscope, X-ray photoelectron spectroscopy, and density functional theory's calculation. As a result, oxidation by oxygen proceeds even below 250 degree C, and carbon monoxide and carbon dioxide and vacancy defects were formed via carbonyl and lactone groups. By epoxidization of fullerene, epoxy, carbonyl, and lactone groups were formed. The amount of epoxy and lactone groups were reduced, and carbonyl and carbone were remained. Vacancy defects were observed using transmission electron microscope, but the proof that the vacancy defects were created by heat treatment is necessary in the future.