| Abstract
| - Nanocubic La2Sn2O7 photocatalysts with pyrochlore structure have been successfully synthesized by a one-pot hydrothermal method. The effects of alkaline concentration, reaction time, and hydrothermal temperatureon the structures and morphologies of the resultant products were investigated. On the basis of characterizationresults from X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy(TEM), and selected area electron diffraction (SAED), a possible growth mechanism of the nanocubes underthe hydrothermal conditions was proposed. The absorption spectra of as-prepared cubic La2Sn2O7 photocatalystwere determined by UV−vis spectrometer. Photocatalytic experiments showed that the La2Sn2O7 samplesnot only had a high activity for degradation of methyl orange, but also had the activity for generating H2 witha rate of 39 μmol/h under ultraviolet light irradiation.
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