Abstract

In current study, SnO2 spheres, corals, sheets and octahedrons were synthesized by the hydrothermal routes with tin salts under different conditions. We investigated the intermediate reaction on the formation of SnO2 with different morphologies and proposed their possible formation mechanisms. Moreover, the obtained SnO2 sheets are found to show the better sensing performances than that of other structures. Our results also illustrate that gas sensing properties of SnO2 can be significantly improved by varying the morphologies of the structures. The results may hold substantial promise in multidimensional gas-sensing applications.

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