Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8161054 | Physica B: Condensed Matter | 2018 | 14 Pages |
Abstract
Nanostructured hematite thin films prepared by dip coating technique were investigated for their photoelectrochemical activity for generation of hydrogen from water splitting. Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resolution field emission-scanning electron microscopy, UV-vis spectrophotometry and Raman spectroscopy. The photoelectrochemical measurements of the films showed enhanced photoresponse and cathodic shift of the onset potential upon Ti doping indicating improved transfer of photoholes at the semiconductor-electrolyte interface. Films doped with 1Â at% Ti produced 0.72Â mA/cm2 at 1.23Â V vs RHE which is 2 times higher than current density for the pure film (0.30Â mA/cm2, at 1.23Â V vs RHE). Gas chromatography analysis of the films also showed enhanced hydrogen evolution at 1Â at% Ti with respect to pure film.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Kelebogile Maabong, Augusto G.J. Machatine, Benard S. Mwankemwa, Artur Braun, Debajeet K. Bora, Rita Toth, Mmantsae Diale,