dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Li, Xian |
dc.contributor.author |
Pustulka, Samantha |
dc.contributor.author |
Pedu, Scott |
dc.contributor.author |
Close, Thomas |
dc.contributor.author |
Xue, Yuan |
dc.contributor.author |
Richter, Christiaan |
dc.contributor.author |
Taboada-Serrano, Patricia |
dc.date.accessioned |
2018-12-10T10:44:26Z |
dc.date.available |
2018-12-10T10:44:26Z |
dc.date.issued |
2018-06-05 |
dc.identifier.citation |
Li X, Pustulka S, Pedu S, Close T, Xue Y, Richter C, Taboada-Serrano P. Titanium Dioxide Nanotubes as Model Systems for Electrosorption Studies. Nanomaterials. 2018; 8(6):404. doi:10.3390/nano8060404 |
dc.identifier.issn |
2079-4991 |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/944 |
dc.description |
Publisher's version (útgefin grein) |
dc.description.abstract |
Highly ordered titanium dioxide nanotubes (TiO2 NTs) were fabricated through anodization and tested for their applicability as model electrodes in electrosorption studies. The crystalline structure of the TiO2 NTs was changed without modifying the nanostructure of the surface. Electrosorption capacity, charging rate, and electrochemical active surface area of TiO2 NTs with two different crystalline structures, anatase and amorphous, were investigated via chronoamperometry, cyclic voltammetry, and electrochemical impedance spectroscopy. The highest electrosorption capacities and charging rates were obtained for the anatase TiO2 NTs, largely because anatase TiO2 has a reported higher electrical conductivity and a crystalline structure that can potentially accommodate small ions within. Both electrosorption capacity and charging rate for the ions studied in this work follow the order of Cs+ > Na+ > Li+, regardless of the crystalline structure of the TiO2 NTs. This order reflects the increasing size of the hydrated ion radii of these monovalent ions. Additionally, larger effective electrochemical active surface areas are required for larger ions and lower conductivities. These findings point towards the fact that smaller hydrated-ions experience less steric hindrance and a larger comparative electrostatic force, enabling them to be more effectively electrosorbed. |
dc.format.extent |
404 |
dc.language.iso |
en |
dc.publisher |
MDPI AG |
dc.relation.ispartofseries |
Nanomaterials;8(6) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Electrosorption |
dc.subject |
Titania nanotubes |
dc.subject |
Nanostructured electrodes |
dc.subject |
Rafeindaverkfræði |
dc.title |
Titanium Dioxide Nanotubes as Model Systems for Electrosorption Studies |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0). |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Nanomaterials |
dc.identifier.doi |
10.3390/nano8060404 |
dc.relation.url |
http://www.mdpi.com/2079-4991/8/6/404/pdf |
dc.contributor.department |
Iðnaðarverkfræði-, vélaverkfræði- og tölvunarfræðideild (HÍ) |
dc.contributor.department |
Faculty of Industrial Eng., Mechanical Eng. and Computer Science (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |