基于铜金属有机框架材料测定污水中的硫离子

Determination of Sulfur Ions in Wastewater Based on Copper Metal Organic Frame Materials

制备了纳米铜(Cunano)和Cu-MOFs修饰电极(Cunano/Cu-MOFs-Nf/GC电极),该电极具有良好的导电性。在Cl-存在的情况下,该电极产生固相的Cu Cl电化学氧化峰。当加入S^2-以后,由于发生不可逆的S-Cl置换反应,生成更稳定的Cu2S,从而导致CuCl电信号的降低,实现对S^2-的检测。最后,Cunano/Cu-MOFs-Nf/GC电极用于检测工业排放污水中的S^2-。

Nano-copper and Cu-MOFs modified electrode(Cunano/Cu-MOFs-Nf/GC electrode)were prepared,and the electrode had good electrical conductivity.In the presence of Cl-,it showed the electrochemical oxidation peak o solid phase CuCl.When S^2-was added,a more stable Cu2S was generated due to the irreversible S-Cl replacemen reaction,which led to the decrease of CuCl electrical signal.Finally,this electrode was used for rapid and sensitive S^2-detection in industrial discharge sewage.