掺杂Co对K_2Nb_4O_(11)光催化性能的影响

Influence of Co-doped on the Photocatalytic Activity of K_2Nb_4O_(11)

采用高温固相法合成了不同Co掺量的K2Nb4O11,通过XRD分析了所合成化合物的物相组成。光催化降解酸性红G的实验结果表明,Co掺量对K2Nb4O11光催化性能有较大的影响,确定了Co的最佳掺量;K2Nb4O11和CoNb2O6等氧化物的复合效应可能对光催化性能的改善起主要作用;掺Co的K2Nb4O11光催化降解酸性红G的反应动力学符合一级反应。

Co-doped K2Nb4O11 powders were obtained by solid-phase reaction method. The structure of the obtained powders was investigated by X-ray diffraction. The photocatalytic degradation of acid red G on the catalyst showed that the contents of cobalt in the catalyst had important effect on the photocatalytic activity of the catalyst. The composite effect of K2Nb4O11 and CoNb2O6 etc may play a major role on improving the photocatalytic activity of the obtained catalyst. The photocatalytic reaction followed with the first order kinetics equation.