这是由于固定在修饰电极中的P2Mo18的还原伴随着质子从水溶液中析出到

This is because the reduction of P2Mo18 fixed in the modified electrode is accompanied by proton precipitation from the aqueous solution to the electrode surface to maintain electrical neutrality. As the pH value increases, the rate of proton penetration into [(PSS/PPy)(P2Mo18/PPy)n] multilayer composite membrane to modify the electroactive part of the electrode surface slows down, so the current decreases. The negative shift of the reduction peak can be explained by the Nernst equation.

This is due to the reduction of P2Mo18 fixed in the modified electrode, which is accompanied by protons from the aqueous solution to maintain electrical neutrality from the surface of the electrode. As the pH increases, the rate at which protons penetrate into the electrosurface active part of the multilayer composite membrane modified electrode (PSS/PPy) (P2Mo18/PPy) slows down, thus reducing the current. Restoring the peak negative shift can be explained by the Energy equation.

This is due to the reduction of p2mo18 immobilized in the modified electrode, accompanied by proton precipitation from aqueous solution to the electrode surface to maintain electrical neutrality. With the increase of pH, the penetration rate of proton into the surface of [(PSS / PPy) (p2mo18 / PPy) n] multilayered composite film electrode slows down, so the current decreases. The negative shift of reduction peak can be explained by Nernst equation.