利用水合肼作缓释型碱源和络合剂, 采用水热法合成了Zn2SnO4立方多面体。XRD物相分析表明, 产物为结晶良好的立方反尖晶石结构Zn2SnO4。FESEM和TEM形貌分析表明, 该Zn2SnO4微晶为边长100～400 nm左右的立方体, 其光致发光光谱是蓝-绿光发射带(中心590 nm处), 在400 ℃空气气氛下退火1 h后, 蓝-绿光发射带的强度显著降低。这主要是因为退火处理提高了晶体质量, 降低了氧空位浓度, 从而降低了可见光发射带的强度。

Zn2SnO4 nanocubes have been synthesized via a simple and facile one-pot hydrothermal process. The X-ray diffraction (XRD) pattern demonstrates that the products are fine single crystals Zn2SnO4 with the inverse spinel crystal structure. The FESEM and TEM images confirm that Zn2SnO4 microcrystallines are cube-like structure with the side length of 100～400 nm. In addition, the photoluminescence (PL) spectra of Zn2SnO4 nanocubes at room temperature show a broad blue-green emission around the 380～820 nm wavelengths with a maximum center at 590 nm. The PL property of the Zn2SnO4 nanocubes can be obviously reduced by annealing at 400 ℃ for 1 h due to the improvement of the crystal quality and the reduced concentration of oxygen vacancy.