![]() ![]() The UV–vis analysis shows a blue-shift of the absorption edge of the undoped ZnSe and Ag doped ZnSe nanophosphors as compared to its value for bulk ZnSe. Some nanorods structures are formed in Zn0.95Ag0.05Se as confirmed by the FE-SEM images. The crystallite size is found to increase from 4.2 nm to 13.5 nm for Ag doped ZnSe nanostructures. XRD patterns of samples reveal the formation of cubic phase for the undoped ZnSe, 1% and 3% Ag doped ZnSe, and 5% silver doped sample indicates the formation of another phase of Ag2Se along with the original one. The prepared nanophosphors were characterized by X-ray diffraction (XRD), UV–vis spectroscopy, Photoluminescence (PL) spectroscopy, Raman spectroscopy and field emission scanning electron microscopy (FE-SEM). Zn1−xAgxSe (x=1%, 3%, 5%) nanophosphors are synthesized via a simple hydrothermal route. In the present study undoped ZnSe and silver doped ZnSe viz. OH in the catalytic process was obtained by using different scavengers.A feasible reaction pathway and photocatalytic mechanism for the degradation of carmine was investigated by GC-MS, and the main role of As for the role of electron beam irradiation, it could improve the content of free hydroxyl groups on the material surface and enhance catalytic capacity of the heterogeneous material. ![]() PL, DRS and XPS results proved that ternary heterostructure could effectively inhibit the rapid recombination of electron hole pairs of Ag/Bi2WO6/CdWO4. Proper amount of supported in-situ nano-silver induced the resonance of the plasma on the catalytic interface and synergized with Bi3+ to improve the catalytic efficiency. In addition, the results showed that, 4% Ag load rate had the best improvement on the photocatalytic performance of the ternary heterostructure material. Within 20 min, the removal efficiency of the treated material for carmine could reach about 100% (50 mL, 50 mg/L), while, that for hexavalent chromium (Cr6+) could reach about 100% (50 mL, 10 mg/L) within 90 min. Under visible light irradiation, the degradation efficiency of the heterostructure material was improved obviously. Besides, electron beam irradiation was used for artificially creating interface defects to the material. The in-situ loading precisely regulated the distribution of silver nanoparticles on the heterojunction surface. An efficient ternary Ag/Bi2WO6/CdWO4 heterostructure material was prepared through a facile hydrothermal route. ![]()
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