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Enhanced sunlight photocatalytic performance of ZnO/ZnS binary heterostructure sheets
摘要： The 2D binary heterostructured ZnO/ZnS sheets were prepared via a hydro-thermal synthesis method. The X-ray diffraction results illustrated that ZnS was successfully formed on ZnO sheets. The images captured by field emission scanning electron microscopy showed the granular structure with fine particles on the surface, which increases the contact area between dye solution and catalysts. The EDS spectrum suggested that the surface of the heterojunction was almost entirely coated with ZnS. The UV-vis diffuse reflectance spectra clarified that the ultraviolet and visible absorption of heterostructure were both enhanced. These results all contribute to the efficient methyl orange degradation with the degradation rate of 83 % in 4 h under direct sunlight.
关键词： Binary heterostructure,Sunglight,Photocatalytic activity,Semiconductor
更新于2025-09-23 15:23:52
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Enhanced photocatalytic activity of g-C3N4 quantum dots/Bi3.64Mo0.36O6.55 nanospheres composites
摘要： In this research, heterostructured g-C3N4 quantum dots (CNQDs)/Bi3.64Mo0.36O6.55 nanospheres have been fabricated trough an in situ precipitation process. Compared to the pure Bi3.64Mo0.36O6.55, the as-fabricated CNQDs/Bi3.64Mo0.36O6.55 nanocomposites exhibited significantly improved photocatalytic performance for the photodegradation of rhodamine B (Rh B) and bisphenol A (BPA). In addition, 5 wt% CNQDs/Bi3.64Mo0.36O6.55 sample showed the highest photocatalytic efficiency under visible-light irradiation (λ > 420 nm). The effective separation and transmission of photogenerated electron-hole pairs caused by CNQD loading as well as the improved BET surface area are associated with the enhancement of the photocatalytic activity of the CNQDs/Bi3.64Mo0.36O6.55 photocatalyst.
关键词： Water purification,Bi3.64Mo0.36O6.55 nanospheres,Binary heterostructure,g-C3N4 quantum Dots,Photocatalytic activity
更新于2025-09-23 15:21:01