Modification of Titanium Oxide Films by Ferric Ions in Hydrothermal Conditions and their Photo-Electrochemical Properties

Seitmagzimov, Altay A.; Seitmagzimova, G.M.

doi:10.14233/ajchem.2015.18627

Cited by 1 publication

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“…3) identified as a layer of iron oxide. For example, it is in good agreement with the spectra of iron oxide in [5] in the limit of 350-800 nm. We can see the absorption limit which is in line with approximately 400 nm.…”

Section: Resultssupporting

confidence: 76%

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Hydrothermal grown iron oxide films on the surface of titanium and conductive glasses and their current characteristics in water photolysis

Seitmagzimov¹,

Seitmagzimova²,

Dzhanmuldaeva³

2020

Bull. of the Kar. Univ. "Chem". Ser.

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Hydrothermal grown iron oxide films on the surface of titanium and conductive glasses and their current characteristics in water photolysis The relevance of photolysis on semiconductor electrodes since the pioneer work of Fujishima and Honda on metallic titanium does not lose sharpness due to new possibilities for developing new materials, such as conductive glasses, for which photolysis cells with semi-transparent semiconductor layer can be created. We have compared properties of such glasses with a metal for hydrothermal conditions of iron oxide synthesis. Iron oxide films have also been obtained by introducing a number of cations to modify semiconductor systems (Fe2O3). It turned out that the nature of the substrate significantly affects the properties of the formed conductive film, which ultimately forms the level of anodic photocurrents in the layer of iron oxide semiconductor. We have investigated current characteristics of such films; it was shown that charging processes occur better on metallic titanium than on conductive glasses. We consider that the metal substrate significantly reduces regeneration processes both in the semiconductor layer and at the interface. Thus, formed Ti/Fe2O3 electrolyte heterojunction is more efficient than the conducting glass/Fe2O3 electrolyte system. However, this does not mean that glass is less promising for photolysis systems. It is necessary to achieve more acceptable conditions for the synthesis of semiconductor material.

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Section: Resultssupporting

confidence: 76%

“…It was shown earlier that under the studied conditions of hydrothermal synthesis [5] at certain concentration ranges of iron chloride (III) it is possible to dope titanium dioxide films with iron ions. It gives a significant improvement of current characteristics of photoelectrodes.…”

Section: Introductionmentioning

confidence: 99%