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Photoelectochemical behavior of TiO2-NT’s modified with SILAR deposited iron oxide
- Source :
- Electrochimica Acta
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- The fast reaction of forced hydrolysis of iron(III) nitrate in hypochlorite solution at room temperature, leads to the formation of mainly hematite, α-Fe2O3. Successive ion adsorption and reaction (SILAR) is applied to decorate an electrochemically formed TiO2 nanotube electrode. The anodic photoelectrochemical behavior of pure TiO2-NT’s and modified electrodes are investigated in a sulfate containing solution at pH = 9.2. It is shown that such a modification leads to an increase of anodic photoactivity, as well as that at the same current density, the photoelectrochemical cell with a modified electrode operates at a voltage lower by 0.7 V. The band gap and flat band potentials are estimated, and the structure of the band gap and possible charge transfer reactions and mechanism are discussed.
- Subjects :
- Band gap
General Chemical Engineering
Inorganic chemistry
Iron oxide
Hematite
Hypochlorite
02 engineering and technology
010402 general chemistry
01 natural sciences
chemistry.chemical_compound
Electrochemistry
Forced hydrolysis
Photoelectrochemical cell
Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Anode
visual_art
Electrode
visual_art.visual_art_medium
0210 nano-technology
Current density
Flat band potential
Subjects
Details
- ISSN :
- 00134686
- Volume :
- 203
- Database :
- OpenAIRE
- Journal :
- Electrochimica Acta
- Accession number :
- edsair.doi.dedup.....64d2f4b558729bd675c8ec2bd81b5ad7
- Full Text :
- https://doi.org/10.1016/j.electacta.2016.04.038