Synthesis, characterization and performance evaluation of three-layered photoanodes by introducing a blend of WO3 and Fe2O3 for dye degradation
MetadataShow full item record
A three-layered photoanode has been synthesized by the introduction of an additional layer of mixed WO3 and Fe2O3. A total of nine differently-packaged films were prepared by sol-gel method. The fabricated photoanodes were then successfully characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). A comparative study was also done to differentiate the films fabricated with WO3, Fe2O3 and their mixture. Compact, columnar tree and shallow patterns were observed on the cross cleavage of the synthesized layers. These distinct patterns were associated with the growth of layers which consequently led to unique surface morphologies. An increase in photocurrent density was observed on the bicomponent film which has been linked to a high degree of surface roughness as well as improved internal porosity. Three-layered photoanodes, modified with an additional bicomponent layer of WO3:Fe2O3 established much higher photocurrent outputs compared to that of nanostructured WO3 or Fe2O3, regardless of the bicomponent layer arrangement. However, with the bicomponent layer on top and middle, the measured photocurrent soared more than three times as much compared to a slight increase observed when the bicomponent was placed on the bottom.
Showing items related by title, author, creator and subject.
Hydrothermal synthesis of a crystalline rutile TiO2 nanorod based network for efficient dye-sensitized solar cellsYu, H.; Pan, Jian; Bai, Y.; Zong, X.; Li, X.; Wang, L. (2013)One-dimensional (1D) TiO2 nanostructures are desirable as photoanodes in dye-sensitized solar cells (DSSCs) due to their superior electron-transport capability. However, making use of the DSSC performance of 1D rutile ...
Bi-layer photoanode films of hierarchical carbon-doped brookite-rutile TiO2 composite and anatase TiO2 beads for efficient dye-sensitized solar cellsShen, Z.; Wang, G.; Tian, H.; Sunarso, J.; Liu, L.; Liu, J.; Liu, Shaomin (2016)© 2016 Elsevier LtdDye-sensitized solar cell (DSSC) is one of the most promising alternatives to the conventional p-n junction photovoltaic device. Here, we have explored the morphology and structure variation and the ...
Influence of surfactants on Fe2O3 and WO3 nanostructured photoanodes and their photoelectrochemical behaviourMemar, Amir (2014)This study aims to improve photoelectrode performance by varying the nanostructural characteristics of different metal oxides, Fe203 and W03, in a single layer photoanode for photoelectrochemical water splitting application. ...