Constructing an S-scheme MnFe2O4/ZnIn2S4 heterojunction with photothermal effect to achieve efficient degradation of tetracycline and 2,4,6-trinitrotoluene
Source abstract
Abstract
In this work, the S-scheme MnFe 2O 4/ZnIn 2S 4 (MFO/ZIS) heterostructure was prepared by hydrothermal method, which can degrade tetracycline (TC) and 2,4,6-trinitrotoluene (TNT) efficiently. Under simulated sunlight irradiation, 88.9 % of TC can be degraded within 75 minutes, and 82.7 % of TNT can be degraded within 120 minutes. The photocurrent response of 3 %MFO/ZIS (0.45 µA cm- 2) surpassed that of ZIS (0.15 µA cm −2) and MFO (0.08 µA cm −2). This is mainly due to the synergistic effect of the S-scheme electron transport pathway and the photothermal effect in MFO/ZIS, which improves its utilization rate of photogenerated electrons. After being used four times, 3 %MFO/ZIS can still degrade 80.2 % of TC, showing excellent stability. In addition, the TC degradation process was analyzed and the low toxicity of TC after degradation was confirmed by LC-MS, ECOSAR and experiments of cultivating mung bean sprouts, demonstrating the potential application value of MFO/ZIS heterojunction in the wastewater treatment field.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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