The results show that the Sb_9W_(21)-GCE shows good electrocatalytic activity and good electrocatalytic activity toward the reduction of nitrite and bromate.

• 结果表明:该修饰电极充分保持了Sb9W21的电化学活性; 对亚硝酸根和溴酸根的还原具有良好的电催化效果.