The Potential of the Tellurium-Tellurium Dioxide Electrode as a Function of pH

XPS in development of chemical sensors

“…Instead, the absence of the peak component at 577.8 eV related to Te(VI) aer the electrochemical treatment evidenced that this species was not stable at used pH conditions. 73 In addition, the component at 575.6 eV was attributed to Te(II)-Pt adsorbed species. 71,74,75 6.…”

The Oxides and Oxyacids of Tellurium

“…There is some discrepancy in the values of the Te-Te02 or Te-H2Te03 potentials, and the values which have been reported are summarized in Table XV. The emf of the cell, Te(s) ¡Te02(s) buffer solution] | saturated calomel electrode, was measured at 25°and various pH values (114). The relationship E = 0.349 -0.0469(pH) was obtained for the range of pH 2.2 to 8.0.…”

“…Ricketts and Tresselt (114) obtained the relationship E = 0.593 -0.0469(pH) using polished tellurium rods scratched with emery paper in a buffer solution saturated with tellurium dioxide. The presence of oxygen increased the emf of the cell.…”