Fig. 2

SEM images of the TiO2 (a,b) and TiO2@C (c,d), TEM and HRTEM images of the TiO2@C (e,f), SAED pattern of TiO2@C (g), EDX mapping images of TiO2@C based on SEM observation (h).

SEM images of the TiO2 (a,b) and TiO2@C (c,d), TEM and HRTEM images of the TiO2@C (e,f), SAED pattern of TiO2@C (g), EDX mapping images of TiO2@C based on SEM observation (h).