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Article

Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization

West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Nanomaterials Physicochemistry Department, Piastow Ave. 45, 70-311 Szczecin, Poland
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Catalysts 2019, 9(12), 1007; https://doi.org/10.3390/catal9121007
Received: 30 September 2019 / Revised: 22 November 2019 / Accepted: 27 November 2019 / Published: 30 November 2019
(This article belongs to the Special Issue Photocatalysis in Europe: Recent Advances and Future Prospects)
Spherical photocatalyst based on ordered mesoporous carbon and graphitic carbon nitride with core/shell structure (CS/GCN) was successfully synthesized via facile electrostatic self-assembly strategy. The photocatalytic properties of the hybrid were evaluated by the decomposition of Acid Red 18 under simulated solar light irradiation in comparison to the bulk graphitic carbon nitride (GCN). The results clearly revealed that coupling of carbon nitride with mesoporous carbon allows the catalyst to form with superior photocatalytic performance. The photoactivity of CS/GCN was over nine times higher than that of pristine GCN. Introducing mesoporous carbon into GCN induced higher surface area of the heterojunction and also facilitated the contact surface between the two phases. The synergistic effect between those two components enhanced the visible light-harvesting efficiency and improved photoinduced charge carrier generation, and consequently their proper separation. The electrochemical behavior of the obtained composite was also evaluated by electrochemical impedance, transient photocurrent response and linear sweep potentiometry measurements. The results confirmed that transport and separation of charge carriers in the hybrid was enhanced in comparison to the reference bulk graphitic carbon nitride. Detailed electrochemical, photoluminescence and radical scavenger tests enabled determination of the possible mechanism of photocatalytic process. This work presents new insights to design a core/shell hybrid through the simple preparation process, which can be successfully used as an efficient photocatalyst for the treatment of wastewater containing dyes under solar light irradiation. View Full-Text
Keywords: graphitic carbon nitride; mesoporous carbon; core/shell structures; dye removal; photocatalysis graphitic carbon nitride; mesoporous carbon; core/shell structures; dye removal; photocatalysis
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MDPI and ACS Style

Baca, M.; Aleksandrzak, M.; Mijowska, E.; Kaleńczuk, R.J.; Zielińska, B. Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization. Catalysts 2019, 9, 1007. https://doi.org/10.3390/catal9121007

AMA Style

Baca M, Aleksandrzak M, Mijowska E, Kaleńczuk RJ, Zielińska B. Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization. Catalysts. 2019; 9(12):1007. https://doi.org/10.3390/catal9121007

Chicago/Turabian Style

Baca, Martyna, Małgorzata Aleksandrzak, Ewa Mijowska, Ryszard J. Kaleńczuk, and Beata Zielińska. 2019. "Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization" Catalysts 9, no. 12: 1007. https://doi.org/10.3390/catal9121007

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