The graphenothermal reduction mechanism of Fe2O3 by graphene oxide (GO) is elucidated through careful experimental analysis. The degree of oxidation (DO) of GO plays a key role in controlling the reduction of Fe2O3 by GO. GO with low DO follows a conventional three-stage reaction path, i.e., ′2GO + Fe2O3 → EG/Fe3O4 (Stage I) → EG/FeO (Stage II) → EG/Fe (Stage III)′ (where EG is exfoliated reduced graphene oxide), at temperatures 650 and 750 °C to reduce Fe2O3, whereas the GO with higher DO transforms rapidly and ceases the reduction at Stage I, i.e., with the formation of EG/Fe3O4 at 650 °C. It is also found that slow thermal treatment of GO continues the reduction to Stage II and further to Stage III depending on time of heating and temperature. EG/Fe3O4 (synthesized at 550 °C, 5 h) by using GO with low DO showed superior cycling performance as an anode of Li-ion battery than its counterpart prepared (at 650 °C, 5 h) from GO with high DO owing to good contacts between EG and Fe3O4. EG/Fe3O4 (synthesized at 550 °C, 5 h) exhibited reversible capacity as high as 860 mAh/g which is greater than the specific capacity of EG/Fe3O4 synthesized (at 650 °C, 5 h) by 150 mAh/g. Overall, EG/Fe3O4 (synthesized at 550 °C, 5 h) outperformed its counterpart (i.e., EG/Fe3O4 synthesized at 650 °C, 5 h) by exhibiting excellent cycling stability and rate capability at current rates ranging from 0.5 to 3.0 C.

An Fe2Mo3O8/exfoliated graphene oxide (EG) composite with unique morphology is synthesized by a novel solid-state reduction method.

The MgO decorated multi-layered graphene oxide (MLGO) catalyst exhibit an efficient oxygen reduction reaction capability with high activity and durability.

The present report demonstrates the development of a Pt–Ni/rGO composite electrochemical sensor for the detection of dopamine.

In this study we report a one-step procedure for the fabrication of Pd–Ag bimetallic nanoparticles on the surface of a graphene oxide (rGO) support.