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Ytterbium Doped TiO 2 Nanofibers on Activated Carbon Fibers Enhances Adsorption and Photocatalytic Activities for Toluene Removal
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Abstract
The combination of activated carbon fiber (ACF) adsorbents and ytterbium‐doped TiO
2
(Yb‐TiO
2
) photocatalysts is a promising strategy for toluene removal. Herein, we firstly constructed Yb‐TiO
2
/ACF porous materials (Yb‐TiACFs) by the treatment of TiO
2
/ACF porous materials (TiACFs) with Yb(NO
3
)
3
solutions. The ultralong Yb‐TiO
2
nanofibers that were composed of many nanocrystals along [101] direction twisted around ACFs. The synergetic effects of Yb‐TiO
2
and ACFs promoted toluene adsorption, and the adsorption trends matched well with pseudo‐second‐order kinetics model. It was firstly found that ACFs and Yb
3+
dopants improved TiO
2
quantum efficiency by driving electron‐hole separation and enhancing light adsorption activity. Yb‐TiACFs promoted the photocatalytic oxidation of toluene, and the photocatalytic activity was better than TiO
2
nanocrystals (P25, Evonik Degussa). The toluene photodegradation trend on Yb‐TiACFs was fit well with apparent first‐order reaction kinetics model. The interesting findings demonstrated that Yb‐TiACFs were a promising platform for toluene removal via adsorption and photocatalysis synergetic effects.
Title: Ytterbium Doped TiO
2
Nanofibers on Activated Carbon Fibers Enhances Adsorption and Photocatalytic Activities for Toluene Removal
Description:
Abstract
The combination of activated carbon fiber (ACF) adsorbents and ytterbium‐doped TiO
2
(Yb‐TiO
2
) photocatalysts is a promising strategy for toluene removal.
Herein, we firstly constructed Yb‐TiO
2
/ACF porous materials (Yb‐TiACFs) by the treatment of TiO
2
/ACF porous materials (TiACFs) with Yb(NO
3
)
3
solutions.
The ultralong Yb‐TiO
2
nanofibers that were composed of many nanocrystals along [101] direction twisted around ACFs.
The synergetic effects of Yb‐TiO
2
and ACFs promoted toluene adsorption, and the adsorption trends matched well with pseudo‐second‐order kinetics model.
It was firstly found that ACFs and Yb
3+
dopants improved TiO
2
quantum efficiency by driving electron‐hole separation and enhancing light adsorption activity.
Yb‐TiACFs promoted the photocatalytic oxidation of toluene, and the photocatalytic activity was better than TiO
2
nanocrystals (P25, Evonik Degussa).
The toluene photodegradation trend on Yb‐TiACFs was fit well with apparent first‐order reaction kinetics model.
The interesting findings demonstrated that Yb‐TiACFs were a promising platform for toluene removal via adsorption and photocatalysis synergetic effects.
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