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Facile electrochemical synthesis of anatase nano-architectured titanium dioxide films with reversible superhydrophilic behavior
DGIST, Dept Energy Syst Engn, 50-1 Sang Ri, Daegu 42988, South Korea..
DGIST, Dept Energy Syst Engn, 50-1 Sang Ri, Daegu 42988, South Korea..
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för kemi - Ångström, Fysikalisk kemi.ORCID-id: 0000-0001-6897-2808
Flux Photon Corp, 116 Donmoor Court, Garner, NC 27529 USA..
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2017 (engelsk)Inngår i: Journal of Industrial and Engineering Chemistry, ISSN 1226-086X, E-ISSN 1876-794X, Vol. 46, s. 203-211Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In the present work we report a facile and readily-scalable electrochemical anodization technique for preparation of superhydrophilic TiO2 films having reversible wettability properties. The electrochemically anodized Titanium (Ti) foils manifest nanoscale topographical features, interconnected nanowebs and nanofibrils, that enhance both surface roughness and light absorption. After 5 min of UV illumination a water contact angle (WCA) of 4.8 degrees is measured for a 5 mu L deionized water droplet, while after 5 min of whitelight illumination the WCA is 3.2 degrees. Moreover, under UV illumination the superhydrophilic Ti foils exhibit self-cleaning properties. Key factors contributing to the superhydrophilic character include surface topology, and surface chemical reactions.

sted, utgiver, år, opplag, sider
2017. Vol. 46, s. 203-211
Emneord [en]
Electrochemical anodization, Superhydrophilic, Nanowebs, Nanofibrils, Titanium dioxide, Surface topology
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Identifikatorer
URN: urn:nbn:se:uu:diva-317580DOI: 10.1016/j.jiec.2016.10.032ISI: 000393243500025OAI: oai:DiVA.org:uu-317580DiVA, id: diva2:1083817
Tilgjengelig fra: 2017-03-22 Laget: 2017-03-22 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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