The atomic ratio of C:O:Ti in the composite was determined as 0.39:0.44:0.16 from the XPS data. The O/C and Ti/C ratios were around 1.12 and 0.39 respectively. The Ti/C ratio was less than the previously reported ratio in the composite [22], which can be understood by considering the rGO wrapped morphology of the TNFs. So, the contribution from the C atoms of rGO is much higher.