Abstract

In this work, worm-like SnS₂ nanoparticles were prepared by a hydrothermal process. And then their photocatalytic activity was explored for the restoration of effluent containing Cr (VI). The results indicate that the product obtained is hexagonal SnS₂ nanoparticles and adopts a worm-like morphology with length of approximate 6 nm and diameter of 3 nm. Moreover, the as-prepared SnS₂ nanoparticles possess high photocatalytic activity for the visible light-driven reduction of Cr (VI). When the concentration of Cr (VI) is 4 × 10⁻⁴mol/L, 99% Cr (VI) can be reduced over the as-prepared SnS₂ nanoparticles within 30 min under visible irradiation.

摘要

在这项工作中，通过水热法制备了蠕虫状的SnS ₂纳米颗粒。然后探讨了它们的光催化活性以还原含Cr（VI）的废水。结果表明，所获得的产物是六角形的SnS ₂纳米颗粒，并具有长约6nm，直径约3nm的蠕虫状形态。此外，所制备的SnS ₂纳米颗粒具有高的光催化活性，可用于可见光驱动的Cr（VI）还原。当Cr（VI）的浓度为4×10 ^-4 mol / L时，在可见光照射下，可以在30分钟内将所制备的SnS ₂纳米颗粒还原99％的Cr（VI）。