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ToF-SIMS Analysis of UV-Switchable TiO_2-Nanoparticle-Coated Paper Surface

Stepien, Milena and Saarinen, Jarkko J. and Teisala, Hannu and Tuominen, Mikko and Aromaa, Mikko and Haapanen, Janne and Kuusipalo, Jurkka and Mäkelä, Jyrki M. and Toivakka, Martti (2013) ToF-SIMS Analysis of UV-Switchable TiO_2-Nanoparticle-Coated Paper Surface. Langmuir, 29 (11). pp. 3780-3790. ISSN 0743-7463.

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The chemical composition of a TiO_2 nanoparticle coated paper surface was analyzed using time-of-flight secondary ion mass spectrometry (ToF-SIMS) to study the interconnection between wettability and surface chemistry on the nanoscale. In this work, a superhydrophobic TiO_2 surface rich in carboxyl-terminated molecules was created by a liquid flame spray process. The TiO_2 nanoparticle coated paper surface can be converted by photocatalytic oxidation into a highly hydrophilic one. Interestingly, the hydrophilic surface can be converted back into a superhydrophobic surface by heat treatment. The results showed that both ultraviolet A (UVA) and oven treatment induce changes in the surface chemistry within a few nanometers of the paper surface. These findings are consistent with those from our previously reported X-ray photoelectron spectroscopy (XPS) analysis, but the ToF-SIMS analysis yields more accurate insight into the surface chemistry.

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Additional Information:© 2013 American Chemical Society. Received: November 28, 2012; Revised: February 20, 2013; Published: February 20, 2013. This work was supported by the Finnish Funding Agency for Technology and Innovation (Tekes) under the project “Liquid flame spray nanocoating for flexible roll-to-roll web materials” (Grant No. 40095/11). J.J.S. wishes to thank the Academy of Finland (grant no. 250 122) for financial support.
Funding AgencyGrant Number
Finnish Funding Agency for Technology and Innovation (Tekes)40095/11
Academy of Finland250 122
Issue or Number:11
Record Number:CaltechAUTHORS:20130412-152738813
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Official Citation:ToF-SIMS Analysis of UV-Switchable TiO2-Nanoparticle-Coated Paper Surface Milena Stepien, Jarkko J. Saarinen, Hannu Teisala, Mikko Tuominen, Mikko Aromaa, Janne Haapanen, Jurkka Kuusipalo, Jyrki M. Mäkelä, and Martti Toivakka Langmuir 2013 29 (11), 3780-3790
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37921
Deposited By: Jason Perez
Deposited On:12 Apr 2013 22:57
Last Modified:03 Oct 2019 04:52

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