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Polymers 2015, 7(9), 1660-1673; doi:10.3390/polym7091476

Preparation and Characterization of Mn/N Co-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber and Its Visible Light Photodegradation

Department of Wood Science and Technology, Tianjin University of Science & Technology, Tianjin 300222, China
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Author to whom correspondence should be addressed.
Academic Editor: Michael K. C. Tam
Received: 18 June 2015 / Revised: 25 August 2015 / Accepted: 27 August 2015 / Published: 7 September 2015
(This article belongs to the Special Issue Stimuli-Responsive Polymers and Colloids)
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Abstract

Using MnSO4·H2O as manganese source and urea as nitrogen source, Mn/N co-doped TiO2 loaded on wood-based activated carbon fiber (Mn/Ti-N-WACF) was prepared by sol–gel method. Mn/Ti-N-WACF with different Mn doping contents was characterized by scanning electron microscopy, X-ray diffraction (XRD) and X-ray photoelectron spectroscopies (XPS), and ultraviolet-visible spectrophotometer. Results showed that the loading rate of TiO2 in Mn/Ti-N-WACF was improved by Mn/N co-doping. After calcination at 450 °C, the degree of crystallinity of TiO2 was reduced due to Mn/N co-doption in the resulting Mn/Ti-N-WACF samples, but the TiO2 crystal phase was not changed. XPS spectra revealed that some Ti4+ ions from the TiO2 lattice of Mn/Ti-N-WACF system were substituted by doped Mn. Moreover, new bonds formed within N–Ti–N and Ti–N–O because of the doped N that substituted some oxygen atoms in the TiO2 lattice. Notably, the degradation rate of methylene blue for Mn/Ti-N-WACF was improved because of the co-doped Mn/N under visible-light irradiation. View Full-Text
Keywords: wood-based activated carbon fiber; Mn/N co-doped TiO2; surface functional group; photodegradation wood-based activated carbon fiber; Mn/N co-doped TiO2; surface functional group; photodegradation
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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).

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Ma, X.; Chen, Y. Preparation and Characterization of Mn/N Co-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber and Its Visible Light Photodegradation. Polymers 2015, 7, 1660-1673.

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