Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76118
Title: Hierarchically porous TiO2-MnTiO3/hollow activated carbon fibers heterojunction photocatalysts with synergistic adsorption-photocatalytic performance under visible light
Authors: Li, J
Ng, DHL
Kwong, FL
Chiu, KL 
Keywords: Hierarchically porous
Heterojunction photocatalysts
Activated carbon fiber
MnTiO3
Biotemplated method
Issue Date: 2017
Publisher: Springer
Source: Journal of porous materials, 2017, v. 24, no. 4, p. 1047-1059 How to cite?
Journal: Journal of porous materials 
Abstract: An ideal photocatalysts is expected to not only involve nanoscale subunits with high catalytic activity, but also possess a 3D hierarchically porous microstructure to obtain more activated sites as well as easy recovery. Herein, we demonstrated an efficient route to synthesize self-support hierarchically porous TiO2-MnTiO3/HACFs (hollow activated carbon fibers) heterojunction photocatalysts with tunable band gaps by a facile biotemplated method. The heterojunctions with suitable TiO2/MnTiO3 ratios on HACFs supports had fascinating 3D hollow fiber morphology and exhibited exceptionally synergistic adsorption-photocatalytic activities in visible-light degradation of methylene blue (MB). The photocatalytic degradation rate of MB could reach 99.1% in 60 min under visible light irradiation and cycled experiments showed stably photocatalytic activities. The enhanced photocatalytic performance could be attributed to the high efficiency of electron separation, the high specific surface area and strong adsorption ability toward the MB molecule, and the tunable visible light absorption of TiO2-MnTiO3/HACFs.
URI: http://hdl.handle.net/10397/76118
ISSN: 1380-2224
EISSN: 1573-4854
DOI: 10.1007/s10934-016-0345-2
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