1. Different types of graphene oxide structures

2. The charge number of three kinds of different atoms in three structures showing in Fig. 1(d), (e) and (f) (d) Graphene oxide with two carbon-oxygen double bonds and one carbon-oxygen single bond; (e, f) Structure (d) adsorbed with hydrogen on the upper and lower side of the suspended oxygen atom, respectively

3. Band structures and density of states (DOS) of different structure models

4. Absorption coefficient of different structure models in which (b-g) the absorption coefficient of graphene and structures in Fig. 1(a-f)

Table 1. Bond length in different structures calculated by different pseudopotential functions (nm)

Table 2. Formation energy with different structures (eV)

Table 3. Elastic coefficients of graphene oxide with different structures