A novel ZnS@MoS2 nanorods composites catalyst for enhancing degradation of organic pollutant under stirring and light irradiation.

Zinc sulfide/molybdenum disulfide (ZnS@MoS 2) nanorods composites were synthesized by straightforward hydrothermal method. Experimental investigations revealed that the kinetic coefficient (k) of ZnS@MoS 2 was 0.0667 min−1 within 30 min, with a degradation efficiency of 88.6 % toward methylene blue dye in presence of both stirring and light. These performances were notably higher compared to conditions with either light or stirring irradiation alone. Moreover, ZnS@MoS 2 composites not only had excellent catalytic activity but also good cyclic stability. The catalytic mechanism of ZnS@MoS 2 for degradation of MB organic pollutant was further discussed based on relevant characterization. Under both stirring and light conditions, the strong piezoelectric field effectively promoted charge carriers separation and reduced the electron-hole recombination rate, thus enhancing catalytic degradation efficiency for ZnS@MoS 2. This research holds significant importance for the development of high-performance catalysts in wastewater treatments field. [Display omitted] • A novel ZnS@MoS 2 nanorods composites catalyst was rationally designed. • ZnS@MoS 2 exhibited superior catalytic activity and stability toward degradation of methylene blue dye. • Excellent catalytic performance was mainly ascribed to the efficient charge carriers separation. • A possible catalytic mechanism of ZnS@MoS 2 was clarified. [ABSTRACT FROM AUTHOR]