Confined Nanospace Pyrolysis towards Discrete and Dispersible Carbon Nanospheres with High Uniformit

• 作 者: An-Hui Lu T.Sun S.Wang G.-H.Wang W.-C.Li Q.Sun
• 机 构: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical,Environm
• 出 处: 中国化学会第28届学术年会
• 发表日期: 2012年10期
• 关键词: carbon nanosphere confined nanospace pyrolysis ·monodispersity dispersibility

　　The synthesis of highly uniform carbon nanospheres,particularly,the ones with the particle sizes below 200 nm remains a grand challenge.[1-3] In the fields of drug delivery,biodiagnostics,colloidal catalysts,photonic crystals,and nanodevices,a strict control on the monodispersity and particle sizes smaller than 200 nm is of necessity.That has driven researchers make long-term unremitting effort in synthesizing such kind of monodisperse carbon nanospheres.Although many kinds of polymer spheres are prepared with high monodispersity,they failed to convert to the carbonaceous counterparts because of their mediocre thermal stability.Hence,the key precondition is to explore a new synthesis of polymer analogues which should concurrently featured by good thermal stability and high monodispersity.Herein,we present our studies on syntheses of highly uniform carbon nanospheres based on benzoxazine chemistry,[4] weak acid-base interaction induced assembly,[5] and confined nanospace pyrolysis.[6] The sizes of the spherical products can be precisely adjusted in the range of 95?225 nm.Moreover,the heterogeneity arising from the doping nitrogen functional groups is endowed with much more robust functions in catalysis,electrochemistry,etc.