Effect of organic additives on electrodeposition and dissolution of zinc from zincate solutions

Cyclic voltammetric studies were carried on glassy carbon in 0.12 M ZnO, 2.75 M NaOH containing various concentrations of triethanolamine and furfuraldehyde. The deposition of zinc was found to occur in stepwise electronation. The chemical step followed by first electron transfer was slow. Triethanolamine and furfuraldehyde participated in the electron transfer processes. Triethanolamine absorbed on the surface and hindered the zinc deposition. Both triethanolamine and furfuraldehyde hindered hydrogen evolution reactio