Abstract
Herein, we prepared the g-C3N4/Gd-doped Bi2WO6 Z-scheme heterojunction (BCN) composites by a simple hydrothermal method. The composites were investigated by SEM (EDX), TEM, XRD, XPS, UV–Vis DRS and PL analysis. The photocatalytic performance of composites was envaulted by degrading methylene blue (MB) under the irradiation of a 300 W mercury lamp. The results demonstrated that coupling g-C3N4 and doping Gd 3+ effectively enhanced the photocatalytic efficiency of pure Bi2WO6. The 92% of MB was degraded within 120 min by optimal 0.15–100 BCN sample, being 1.61 times as that of Bi2WO6. The greatly enhanced performance of 0.15–100 BCN was due to the synergistic effect of Gd 3+ doping and g-C3N4 coupling, which maintained high redox capacity. According to the experiment of capture active species, Z-scheme charge transfer mechanism was also deduced. This study may provide an efficient and green method for the treatment of dyestuff industrial wastewater.
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CM: conceptualization, formal analysis, investigation, writing—original draft; YD: formal analysis, data curation, investigation; XD, LZ, ZX, and XG: data curation; DC: formal analysis, writing—review and editing, visualization.
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Ma, C., Ding, Y., Ding, X. et al. Synthesis of Z-scheme g-C3N4/Gd-doped Bi2WO6 heterojunction with enhanced visible-light photodegradation of organic dyes. J Mater Sci: Mater Electron 33, 14545–14555 (2022). https://doi.org/10.1007/s10854-022-08376-6
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DOI: https://doi.org/10.1007/s10854-022-08376-6