Reduction products-directed different electrochemical sensing performance of polymolybdate-based metal-organic complex

Polyoxometalate-based metal–organic supramolecular architectures derived from two new pyrimidine-amide ligands as supercapacitors and multifunctional electrochemical sensors

“…35,36 The redox reaction mechanism can be described as follows:PMo 12 VI O 40 3− + n e − + n H + ⇔ H n PMo n V Mo 12– n VI O 40 3− Mo 8 O 28 8− + n e − + n H + ⇔ H n Mo n V Mo 8– n VI O 40 8− where n is equal to 2, 4 or 6. 37–39 During the gradual increase in the scanning speed, the cathode peak voltage values and the anode peak voltage values are shifted towards lower and higher potentials, respectively, which may be caused by electrode polarisation. In addition, the charge storage mechanism of 1 -cpe and 2 -cpe was further explored by fitting the relationship between the logarithm of the current density and the logarithm of the scan rate in the CV curves.…”