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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 2/2020

12.12.2019 | Original Paper: Sol-gel and hybrid materials for catalytic, photoelectrochemical and sensor applications

Study on adsorption coupling photodegradation on hierarchical nanostructured g-C3N4/TiO2/activated carbon fiber composites for toluene removal

verfasst von: Yuwei Li, Fang Liu, Meng Li, Wei Li, Xuejin Qi, Ming Xue, Yongqiang Wang, Fenglei Han

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 2/2020

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Abstract

The hierarchical nanostructured g-C3N4/TiO2/activated carbon fiber (ACF) composites are fabricated by simple ultrasonic assisted sol–gel method to removal toluene gas. The results show g-C3N4/TiO2 is evenly loaded onto the ACF surface in the form of a smooth film. The g-C3N4/TiO2/ACF possess strong photocatalytic activity, and its removal efficiency is twice as high as that of TiO2. Compared with TiO2, photoluminescence fluorescence (PL) intensity of g-C3N4/TiO2/ACF decreases nearly 10 times. Interestingly, the significantly enhanced removal efficiency is due to the synergetic effects of adsorption coupling photodegradation and the formation of Ti–O–C bonds between g-C3N4/TiO2 and ACF. The chemical bonding interaction accelerates the separation efficiency of photogenerated charge carriers. The removal efficiency and adsorption amount can be up to 94% and 140.55 mg/g for toluene concentration of 400 mg/m3 and space velocity of 1000 h−1 with 6% g-C3N4/TiO2/ACF. The space-time-yield of g-C3N4/TiO2/ACF reaches 141.06 g h−1 L−1 much higher than that of ACF (73.29 g h−1 L−1) and g-C3N4/TiO2 (64 g h−1 L−1). The possible photodegradation pathway and mechanisms are proposed. Therefore, the g-C3N4/TiO2/ACFs porous composites possess excellent application potential for elimination volatile organic compounds from atmospheric environment.
Vorheriger Artikel Controllable preparation of highly uniform γ-alumina microspheres via the sol–gel route for alkoxide in a coaxial microchannel
Nächster Artikel Facile synthesis of CoFe2O4 magnetic nanomaterial by natural cellulose template and catalytic performance in heterogeneous activation of peroxymonosulfate

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Metadaten
Titel
Study on adsorption coupling photodegradation on hierarchical nanostructured g-C3N4/TiO2/activated carbon fiber composites for toluene removal
verfasst von
Yuwei Li
Fang Liu
Meng Li
Wei Li
Xuejin Qi
Ming Xue
Yongqiang Wang
Fenglei Han
Publikationsdatum
12.12.2019
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 2/2020
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-019-05198-7

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