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- W2063774303 abstract "Current density versus potential curves have been determined for the dark oxidation of water on a range of Ti doped α-Fe2O3 electrodes at various pH values. In all cases the onset of a strongly potential dependent current at 1.7 V (RHE) was observed from a background current of weak potential dependence. These experimental results are compared with calculated relative values of the current density due to direct electron tunnelling (DT) across the space-charge barrier and resonance tunnelling (RT) mediated by Ti donor states in the barrier. The slopes of the experimental curves below and above 1.7 V (RHE) are similar to those of the calculated curves for DT and RT respectively but an irreconcilable discrepancy between the experimental and calculated results is revealed in their dependencies on the dopant density. On the bases of this discrepancy and of the proportionality which was found to exist between the current density at V > 1.7 V (RHE) and the % Ti, it is concluded that the current is due to inelastic tunnelling mediated by Ti donors in the space-charge barrier. The background current is interpreted as due to the mediation of the charge transfer process by a range of surface states." @default.
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- W2063774303 date "1989-11-01" @default.
- W2063774303 modified "2023-10-18" @default.
- W2063774303 title "A study of electron tunnelling at Ti doped α-Fe2O3, electrodes" @default.
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- W2063774303 doi "https://doi.org/10.1016/0022-0728(89)87072-x" @default.
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