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Picture of Removing Organic Compounds from Water with Reusable Nanofiber Films
FPL-2013-155
Removing Organic Compounds from Water with Reusable Nanofiber Films

Title: Reusable photocatalytic titanium dioxide-cellulose nanofiber films

Author: Snyder, Alexandra; Bo, Zhenyu; Moon, Robert; Rochet, Jean-Christophe; Stanciu, Lia.;

Date: 2013

Source: Journal of Colloid And Interface Science, Volume 399, 2013; pp. 92-98.

Publication Series: Scientific Journal (JRNL)

Description: Titanium dioxide (TiO2) is a well-studied photocatalyst that is known to break down organic molecules upon ultraviolet (UV) irradiation. Cellulose nanofibers (CNFs) act as an attractive matrix material for the suspension of photocatalytic particles due to their desirable mechanical and optical properties. In this work, TiO2–CNF composite films were fabricated and evaluated for photocatalytic activity under UV light and their potential to remove organic compounds from water. Subsequently, gold (Au) and silver (Ag) nanoclusters were formed on the film surfaces using simple reduction techniques. Au and Ag doped TiO2 films showed a wider spectral range for photocatalysis and enhanced mechanical properties. Scanning electron microscopy imaging and energy dispersive X-ray spectroscopy mapping were used to evaluate changes in microstructure of the films and monitor the dispersion of the TiO2, Au, and Ag particles. The ability of the films to degrade methylene blue (a model organic dye) in simulated sunlight has been demonstrated using UV–visible spectroscopy. Reusability and mechanical integrity of the films were also investigated.

Keywords: Titanium dioxide, Photocatalysis, Cellulose nanofiber films, Gold, Silver, Reusable

Publication Notes:

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Snyder, Alexandra; Bo, Zhenyu; Moon, Robert; Rochet, Jean-Christophe; Stanciu, Lia. 2013. Reusable photocatalytic titanium dioxide-cellulose nanofiber films. Journal of Colloid and Interface Science. 399: 92-98.

 


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