Details
| Original language | English |
|---|---|
| Article number | 106389 |
| Journal | Journal of Environmental Chemical Engineering |
| Volume | 9 |
| Issue number | 6 |
| Early online date | 20 Sept 2021 |
| Publication status | Published - Dec 2021 |
Abstract
A new visible-light active polymeric semiconductor was fabricated covalently functionalizing the g-C3N4 using halogenated phenyl groups. 4-bromobenzonitrile was employed to introduce organic motifs into g-C3N4 networks through a convenient one-pot thermally induced process. The functionalization of the g-C3N4 with the halogenated phenyl group extended the original π-conjugation system, leading to the enhancement of visible-light absorption, and the separation of charge carriers. Introducing the new group, the g-C3N4 pore structure was enriched, resulting in a larger specific surface area and an increase in active sites. The functionalization led to an easier exfoliation of the g-C3N4 framework into thinner layers, enhancing its dispersion ability in the water. Under visible-light irradiation, the as-prepared semiconductor exhibited increased photocatalytic activity to the pristine g-C3N4. The photocatalytic performances were investigated on a simple organic compound, methanol, a model dye, rhodamine B, and an emergent contaminant, 4-nitrophenol. This research provided new insights on metal-free modified g-C3N4 as a visible-light photocatalyst.
Keywords
- co-polymerization, metal-free semiconductor, photocatalysis, visible light
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Environmental Science(all)
- Waste Management and Disposal
- Environmental Science(all)
- Pollution
- Chemical Engineering(all)
- Process Chemistry and Technology
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In: Journal of Environmental Chemical Engineering, Vol. 9, No. 6, 106389, 12.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synthesis of metal-free functionalized g-C3N4 nanosheets for enhanced photocatalytic activity
AU - Bresolin, Bianca Maria
AU - Sgarbossa, Paolo
AU - Bahnemann, Detlef W.
N1 - Funding Information: Maa-javesitekniikan tuki foundation is gratefully acknowledged for its financial support. This research was supported by Saint-Petersburg State University via a research Grant ID 32706707 . We thank the LNQE (Laboratory of Nano and Quantum Engineering, Hannover, Germany) and the Leibniz University for providing technical equipment and technological knowledge. The Department of Industrial Engineering, Padova University , partially financed the project through the ‘Investimento Strategico di Dipartimento-SID’ grant ( Progetto SGAR_SID17_01 ).
PY - 2021/12
Y1 - 2021/12
N2 - A new visible-light active polymeric semiconductor was fabricated covalently functionalizing the g-C3N4 using halogenated phenyl groups. 4-bromobenzonitrile was employed to introduce organic motifs into g-C3N4 networks through a convenient one-pot thermally induced process. The functionalization of the g-C3N4 with the halogenated phenyl group extended the original π-conjugation system, leading to the enhancement of visible-light absorption, and the separation of charge carriers. Introducing the new group, the g-C3N4 pore structure was enriched, resulting in a larger specific surface area and an increase in active sites. The functionalization led to an easier exfoliation of the g-C3N4 framework into thinner layers, enhancing its dispersion ability in the water. Under visible-light irradiation, the as-prepared semiconductor exhibited increased photocatalytic activity to the pristine g-C3N4. The photocatalytic performances were investigated on a simple organic compound, methanol, a model dye, rhodamine B, and an emergent contaminant, 4-nitrophenol. This research provided new insights on metal-free modified g-C3N4 as a visible-light photocatalyst.
AB - A new visible-light active polymeric semiconductor was fabricated covalently functionalizing the g-C3N4 using halogenated phenyl groups. 4-bromobenzonitrile was employed to introduce organic motifs into g-C3N4 networks through a convenient one-pot thermally induced process. The functionalization of the g-C3N4 with the halogenated phenyl group extended the original π-conjugation system, leading to the enhancement of visible-light absorption, and the separation of charge carriers. Introducing the new group, the g-C3N4 pore structure was enriched, resulting in a larger specific surface area and an increase in active sites. The functionalization led to an easier exfoliation of the g-C3N4 framework into thinner layers, enhancing its dispersion ability in the water. Under visible-light irradiation, the as-prepared semiconductor exhibited increased photocatalytic activity to the pristine g-C3N4. The photocatalytic performances were investigated on a simple organic compound, methanol, a model dye, rhodamine B, and an emergent contaminant, 4-nitrophenol. This research provided new insights on metal-free modified g-C3N4 as a visible-light photocatalyst.
KW - co-polymerization
KW - metal-free semiconductor
KW - photocatalysis
KW - visible light
UR - http://www.scopus.com/inward/record.url?scp=85115447413&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2021.106389
DO - 10.1016/j.jece.2021.106389
M3 - Article
AN - SCOPUS:85115447413
VL - 9
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 6
M1 - 106389
ER -