Proceedings of the 2nd International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2018)

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A Novel Metal-Free Visible-Light-Driven Photo catalytic Foam for Efficient Degradation of Methyl Orange

Authors
Junfeng Wu, Yan Gao, Yi Li
Corresponding Author
Junfeng Wu
Available Online August 2018.
DOI
10.2991/mseee-18.2018.35How to use a DOI?
Keywords
Carbon nitride, polyurethane, floating, photocatalytic degradation.
Abstract

Here, graphitic carbon nitride (g-C3N4) was integrated with polyurethane foam (PUF) as a novel metal-free visible-light-driven photocatalytic foam (g-C3N4/PUF) by a facile ultrasonic method. The fabricated samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray Diffractometry (XRD) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). This composite foam exhibited enhanced photocatalytic performance compared to g-C3N4 powders for degradation of methyl orange (MO) in water without stirring under visible light irradiation. The pseudo-first order rate constant (kobs) for MO photodegradation by g-C3N4/PUF increased by up to a factor of 4.5 when compared with that of g-C3N4. The optimal addition dosage of g-C3N4 precursors for 1 cm3 PUF was determined to be 0.5 g, namely g-C3N4/PUF-5. The new foam maintained its photocatalytic activity at least five consecutive cycles. Specially, the photocatalytic mechanism of g-C3N4/PUF was revealed, and superoxide radicals (•O2-) were found to play a more dominant role than hydroxyl radicals (•OH) for organic pollutant degradation.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2nd International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2018)
Series
Advances in Engineering Research
Publication Date
August 2018
ISBN
10.2991/mseee-18.2018.35
ISSN
2352-5401
DOI
10.2991/mseee-18.2018.35How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Junfeng Wu
AU  - Yan Gao
AU  - Yi Li
PY  - 2018/08
DA  - 2018/08
TI  - A Novel Metal-Free Visible-Light-Driven Photo catalytic Foam for Efficient Degradation of Methyl Orange
BT  - Proceedings of the 2nd International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2018)
PB  - Atlantis Press
SP  - 201
EP  - 206
SN  - 2352-5401
UR  - https://doi.org/10.2991/mseee-18.2018.35
DO  - 10.2991/mseee-18.2018.35
ID  - Wu2018/08
ER  -