Chitosan (CS) polysaccharide is expected to exhibit greater ionic conductivity, which can be attributed to its increased amino group content when it is blended with different semiconducting materials. Herein, the work used this conducting ability of chitosan and prepared a heterogeneous MoS-induced magnetic chitosan (MF@CS) composite via the co-precipitation method, which was used to scrutinize the catalytic performance with Methylene Blue (MB) and Malachite Green (MG) dyes by visible light irradiation. The saturation magnetization value of the MF@CS composite is found to be 7.8 emu/g, which is less when compared to that of pristine FeO (55.7 emu/g) particles. The bandgap of the MF@CS composite is ∼ 2.17eV, which exceeds the bandgap (E) of bare MoS of 1.80 eV. The maximum color removal of 96.3 % and 93.4 % for MB and MG dyestuffs is recognized in the exposure of the visible spectrum, respectively. At a starting dye dosage of 30 mg/L, 0.1 g/L of MF@CS, a pH level of 8−11, and 70 min of contact with direct light. The photocatalyst provides extremely good durability for a maximum of five phases. Hence, the MF@CS matrix is a viable and appropriate substance for the efficient treatment of effluents containing dye molecules.

中文翻译：

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MoS2抑制磁性壳聚糖多糖复合材料的制备及其光催化降解有机染料

壳聚糖（CS）多糖有望表现出更高的离子电导率，这可归因于其与不同半导体材料混合时氨基含量的增加。在此，该工作利用壳聚糖的这种导电能力，通过共沉淀法制备了非均相MoS诱导的磁性壳聚糖（MF@CS）复合材料，并用于检查亚甲基蓝（MB）和孔雀石绿的催化性能。 MG）通过可见光照射进行染色。 MF@CS复合材料的饱和磁化强度值为7.8 emu/g，与原始FeO (55.7 emu/g)颗粒相比要低。 MF@CS复合材料的带隙为~2.17eV，超过了裸MoS2的带隙（E）1.80eV。 MB 和 MG 染料在可见光谱曝光中的最大脱色率分别为 96.3% 和 93.4%。起始染料剂量为 30 mg/L，MF@CS 为 0.1 g/L，pH 值为 8−11，与直射光接触 70 分钟。光催化剂最多可提供五相的极佳耐久性。因此，MF@CS 基质是一种可行且合适的物质，可有效处理含有染料分子的废水。