Ionothermal synthesis of mesoporous SnO2 nanomaterials and their gas sensitivity depending on the reducing ability of toxic gases

Mesoporous SnO2 with a high surface area of 292.7 m2 g−1 has been successfully synthesized via a low-cost NH4Cl-based ionothermal route. When evaluated as a gas sensor, impressive performances towards N2H4 and HCHO are achieved owing to its excellent chemical reactivity towards oxygen.