Preparation of graphene oxides with different sheet sizes by temperature control*

Project supported by the National Natural Science Foundation of China (Grant Nos. 41473090, 41430644, 11675098, 41373098, 41430644, and 21490585).

Qian Zhe1, Chen Liang1, 2, Li De-Yuan1, 2, Peng Bing-Quan1, Shi Guo-Sheng2, ‡, Xu Gang1, §, Fang Hai-Ping2, Wu Ming-Hong1, ¶
       

AFM images of graphene oxide sheets prepared at (a) low temperature and (b) high temperature, respectively.