Dynamic response of all 1D V
· n H
O nanostructures to pH variations. (a) Typical dynamic response of 1D V2O5·n H2O nanostructured sensing membranes to variations in pH and (b) pH sensitivity calculated at 3 min. Inset: pH sensitivity of 1D V2O5·n H2O nanostructures as a function of hydrothermal synthesis temperature.