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Menghao Luo,Hange Feng,Yuechuan Hu,Keke Chen,Zibo Dong,Shaolin Xue 대한금속·재료학회 2023 ELECTRONIC MATERIALS LETTERS Vol.19 No.1
Photocatalytic degradation has received considerable emphasis since it shows signifi cant possibilities in environmentalpollution. In this work, ternary Z-scheme heterojunction g-C 3 N 4 /TiO 2 /Ti 3 C 2 photocatalysts are designed and fabricated. The Z-scheme heterojunctions formed on the surfaces of g-C 3 N 4 and TiO 2 dramatically modify the photocatalyticperformances of the compound under illumination. Meanwhile, in this process, multilayer Ti 3 C 2 , as the transport mediumof Z-scheme heterojunction, is tightly bonded to TiO 2 generated by hydrothermal oxidation and g-C 3 N 4 with large specifi csurface area, which eff ectively facilitates the space charge separation and depresses the charge recombination. When theaddition amount of TiO 2 /Ti 3 C 2 is 80 mg and calcined at 450 ℃ for 4 h, g-C 3 N 4 /TiO 2 /Ti 3 C 2 has the greatest photocatalyticperformance, and the kinetic constant for degradation methyl orange (MO) was about 3.62 times that of g-C 3 N 4 and 14.55times that of Ti 3 C 2 , respectively. This work illustrates that g-C 3 N 4 /TiO 2 /Ti 3 C 2 has outstanding potential and off ers novelinsights for designing and synthesizing new ternary heterojunction materials.