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AuthorŠkipina B.
AuthorLuyt A.S.
AuthorCsóka L.
AuthorDjoković V.
AuthorDudić D.
Available date2020-02-05T08:53:35Z
Publication Date2018
Publication NameDyes and Pigments
ResourceScopus
ISSN1437208
URIhttp://dx.doi.org/10.1016/j.dyepig.2017.08.064
URIhttp://hdl.handle.net/10576/12739
AbstractThe article describes the influence of humidity on the surface photodielectric properties of papers prepared from poly(ethyleneimine)-TiO2 nanoparticles-anthocyanin modified cellulose fibres. The anthocyanins were extracted from purple cabbage, beet-root, plum peel, red wine and red currant juice. The samples were conditioned to various relative humidities (from 9 to 100%) and illuminated with white visible light, ? ? 405 nm. The poly(ethyleneimine)-TiO2-anthocyanin modified samples showed similar photodielectric behaviour that can be clearly distinguished from the samples modified solely with poly(ethyleneimine)-TiO2. Generally, an increase in humidity enhances the conductivity of the samples and induces an increase in the amount of photo-induced charge. Also, at higher humidities (above 80%), the samples with anthocyanin showed significantly higher values of photo-induced charges with respect to anthocyanin free samples. The presented results suggest that the presence of water molecules promotes electron-injection processes from the anthocyanin to the semiconductor surface. 2017 Elsevier Ltd
SponsorThis work was supported in part by the Ministry of Education and Science, Republic of Serbia (Project Nos. 171029 , 172056 , and 45020 ), by the Environment conscious energy efficient building TAMOP-4.2.2.A-11/1/KONV-2012-0068 project sponsored by the EU and European Social Foundation and by the National Research Foundation, South Africa (Grant No. 88301 ).
Languageen
PublisherElsevier Ltd
SubjectAnthocyanin
Cellulose
Humidity
Photodielectric
TiO2
TitleGeneration of photo charge in poly(ethyleneimine)-TiO2-anthocyanin modified papers conditioned at different humidities
TypeArticle
Pagination51-58
Volume Number149
dc.accessType Abstract Only


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