Formation of hematite nanotubes by two-step electrochemical anodization for efficient degradation of organic pollutants
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Formation of hematite nanotubes by two-step electrochemical anodization for efficient degradation of organic pollutants

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Formation of hematite nanotubes by two-step electrochemical anodization for efficient degradation of organic pollutants

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dc.contributor.author Lucas Granados, Bianca
dc.contributor.author Sánchez Tovar, Rita
dc.contributor.author Fernández Domene, Ramón Manuel
dc.contributor.author Garcia-Anton, Jose
dc.date.accessioned 2020-10-20T16:09:11Z
dc.date.available 2020-10-20T16:09:11Z
dc.date.issued 2016
dc.identifier.uri https://hdl.handle.net/10550/75966
dc.description.abstract Nowadays, hematite (a-Fe2O3) has emerged as a promising photocatalyst for efficient degradation of organic pollutants due to its properties such as suitable band-gap (~2.1 eV), stability against photocorrosion, abundance and low cost. However, some drawbacks such as low carrier mobility and short hole diffusion length limit its efficiency. In order to overcome these issues, self-ordered nanotubes can be synthetized. Anodization is one of the simplest and most economic techniques to produce nanostructures with high control. In the present study, self-ordered hematite nanotubes were synthetized by two-step electrochemical anodization. In two-step anodization, a first-step was actually a pretreatment to form well-ordered nanoporous template in which well-ordered nanotubes are grown by a second-step. The formed nanotubes were characterized by different methods such as Field Emission Scanning Microscopy and Raman spectroscopy to determine their morphology and crystalline structure, respectively. Furthermore, the obtained nanotubes were characterized by means of photocurrent density versus potential measurements (water splitting) to evaluate their efficiency as photocatalyst. Good results were obtained as the achieved photocurrent density was 0.079mA cm-2 at 0.58 V (vs. Ag/AgCl), which indicates that the nanotubes synthetized by two-step anodization aresuitable photocatalysts for degradation of organic pollutants.
dc.language.iso eng
dc.relation.ispartof Chemical Engineering Transactions, 2016, vol. 47, p. 85-90
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Lucas Granados, Bianca Sánchez Tovar, Rita Fernández Domene, Ramón Manuel Garcia-Anton, Jose 2016 Formation of Hematite Nanotubes by Two-Step Electrochemical Anodization for Efficient Degradation of Organic Pollutants Chemical Engineering Transactions 47 85 90
dc.subject Electroquímica
dc.title Formation of hematite nanotubes by two-step electrochemical anodization for efficient degradation of organic pollutants
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-10-20T16:09:12Z
dc.identifier.doi https://doi.org/10.3303/CET1647015
dc.identifier.idgrec 140764

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