Synthesis of Zn_2SnO_4 via a co-precipitation method and its gas-sensing property toward ethanol

摘要

In this work, uniform Zn_2SnO_4 nanoparticles were synthesized with a simple co-precipitation method followed by hydrothermal post-treatment process. For comparison, pure ZnO and SnO_2 samples were obtained with the same method. These products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and N_2 absorption-desorption analysis. The ethanol-sensing properties of as-prepared Zn_2SnO_4 nanostructure sensor was systematically investigated and compared with the pure ZnO and SnO_2 sensors. The results revealed that the Zn_2SnO_4-based sensor exhibited a low operating temperature, high response, good repeatability, and long-term stability toward ethanol gas.