A new approach to the synthesis of non-stoichiometric tin oxide structures is studied.
Tin oxide structures are synthesized via hydrothermal method with dicarboxylic acids.
Morphology and phase composition are changed with redox activity and dosage of acid.
The redox activity of acid has an effect on ratio of SnO and SnO2 in crystal structure.
A pure phase Sn3O4 nanoplates and SnO2/Sn3O4 hierarchical structures are formed.