Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites
Mn-doped TiO2 loaded on wood-based activated carbon fiber (Mn/TiO2-WACF) was prepared by sol–gel and impregnation method using MnSO4·H2O as manganese source. The structure of Mn/TiO2–WACF was characterized by SEM, XRD, FTIR, N2 adsorption and UV–Vis, and its photocatalytic activity for methylene blu...
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doaj-de1ead0d024b4972a5dfd7bdd244e8b82020-11-24T22:56:21ZengMDPI AGMaterials1996-19442017-06-0110663110.3390/ma10060631ma10060631Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber CompositesXiaojun Ma0Wanru Zhou1Yin Chen2Department of Wood Science and Technology, Tianjin University of Science & Technology, Tianjin 300222, ChinaDepartment of Wood Science and Technology, Tianjin University of Science & Technology, Tianjin 300222, ChinaDepartment of Wood Science and Technology, Tianjin University of Science & Technology, Tianjin 300222, ChinaMn-doped TiO2 loaded on wood-based activated carbon fiber (Mn/TiO2-WACF) was prepared by sol–gel and impregnation method using MnSO4·H2O as manganese source. The structure of Mn/TiO2–WACF was characterized by SEM, XRD, FTIR, N2 adsorption and UV–Vis, and its photocatalytic activity for methylene blue degradation was investigated. Results show that Mn-doped TiO2 were loaded on the surface of wood-based activated carbon fiber with high-development pore structures. The crystallite sizes of Mn-doped TiO2 in composites were smaller than that of the undoped samples. With an increase of Mn doping content, Ti–O bending vibration intensity of Mn/TiO2–WACF increased and then decreased. Moreover, Ti–O–Ti and Ti–O–Mn absorption peaks increased upon doping of Mn. Mn/TiO2–WACF with low specific surface area, and pore volume was improved at 3.5–6.0 nm of mesopore distributions due to the Mn-doped TiO2 load. In addition, the UV–Vis showed that Mn/TiO2–WACF (photodegradation rate of 96%) has higher photocatalytic activity than the undoped samples for methylene blue degradation under visible light irradiation.http://www.mdpi.com/1996-1944/10/6/631Mn-doped TiO2activated carbon fiberswoodphotocatalystcharacterization |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaojun Ma Wanru Zhou Yin Chen |
spellingShingle |
Xiaojun Ma Wanru Zhou Yin Chen Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites Materials Mn-doped TiO2 activated carbon fibers wood photocatalyst characterization |
author_facet |
Xiaojun Ma Wanru Zhou Yin Chen |
author_sort |
Xiaojun Ma |
title |
Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites |
title_short |
Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites |
title_full |
Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites |
title_fullStr |
Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites |
title_full_unstemmed |
Structure and Photocatalytic Properties of Mn-Doped TiO2 Loaded on Wood-Based Activated Carbon Fiber Composites |
title_sort |
structure and photocatalytic properties of mn-doped tio2 loaded on wood-based activated carbon fiber composites |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2017-06-01 |
description |
Mn-doped TiO2 loaded on wood-based activated carbon fiber (Mn/TiO2-WACF) was prepared by sol–gel and impregnation method using MnSO4·H2O as manganese source. The structure of Mn/TiO2–WACF was characterized by SEM, XRD, FTIR, N2 adsorption and UV–Vis, and its photocatalytic activity for methylene blue degradation was investigated. Results show that Mn-doped TiO2 were loaded on the surface of wood-based activated carbon fiber with high-development pore structures. The crystallite sizes of Mn-doped TiO2 in composites were smaller than that of the undoped samples. With an increase of Mn doping content, Ti–O bending vibration intensity of Mn/TiO2–WACF increased and then decreased. Moreover, Ti–O–Ti and Ti–O–Mn absorption peaks increased upon doping of Mn. Mn/TiO2–WACF with low specific surface area, and pore volume was improved at 3.5–6.0 nm of mesopore distributions due to the Mn-doped TiO2 load. In addition, the UV–Vis showed that Mn/TiO2–WACF (photodegradation rate of 96%) has higher photocatalytic activity than the undoped samples for methylene blue degradation under visible light irradiation. |
topic |
Mn-doped TiO2 activated carbon fibers wood photocatalyst characterization |
url |
http://www.mdpi.com/1996-1944/10/6/631 |
work_keys_str_mv |
AT xiaojunma structureandphotocatalyticpropertiesofmndopedtio2loadedonwoodbasedactivatedcarbonfibercomposites AT wanruzhou structureandphotocatalyticpropertiesofmndopedtio2loadedonwoodbasedactivatedcarbonfibercomposites AT yinchen structureandphotocatalyticpropertiesofmndopedtio2loadedonwoodbasedactivatedcarbonfibercomposites |
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1725653746433654784 |