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Visible Light Induced g-C3N4/TiO2/Ti3C2 Ternary Z-scheme Heterojunction Photocatalyst for Efficient Degradation

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Abstract

Photocatalytic degradation has received considerable emphasis since it shows significant possibilities in environmental pollution. In this work, ternary Z-scheme heterojunction g-C3N4/TiO2/Ti3C2 photocatalysts are designed and fabricated. The Z-scheme heterojunctions formed on the surfaces of g-C3N4 and TiO2 dramatically modify the photocatalytic performances of the compound under illumination. Meanwhile, in this process, multilayer Ti3C2, as the transport medium of Z-scheme heterojunction, is tightly bonded to TiO2 generated by hydrothermal oxidation and g-C3N4 with large specific surface area, which effectively facilitates the space charge separation and depresses the charge recombination. When the addition amount of TiO2/Ti3C2 is 80 mg and calcined at 450 ℃ for 4 h, g-C3N4/TiO2/Ti3C2 has the greatest photocatalytic performance, and the kinetic constant for degradation methyl orange (MO) was about 3.62 times that of g-C3N4 and 14.55 times that of Ti3C2, respectively. This work illustrates that g-C3N4/TiO2/Ti3C2 has outstanding potential and offers novel insights for designing and synthesizing new ternary heterojunction materials.

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The work was supported by Fundamental Research Funds for the Central Universities and Graduate Student Innovation Fund of Donghua University (NO. CUSF-DH-D-2021049).

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Luo, M., Feng, H., Hu, Y. et al. Visible Light Induced g-C3N4/TiO2/Ti3C2 Ternary Z-scheme Heterojunction Photocatalyst for Efficient Degradation. Electron. Mater. Lett. 19, 94–107 (2023). https://doi.org/10.1007/s13391-022-00377-1

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