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8649323 
Journal Article 
Preparation of novel magnetic Mn0.6Zn0.4Fe2O4@CdS nanocomposite photocatalysts and its properties of adsorption and photocatalysis 
Huang, H; Wei, Y; Wang, W; Liu, M; Niu, Z 
2020 
Yes 
Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae
ISSN: 0253-2468 
40 
1 
128-137 
Chinese 
A novel magnetic Mn0.6Zn0.4Fe2O4@CdS nano-composites (NPs) pholocatalyst is prepared via a two-step hydrothermal and solvothermal method. The as-prepared pholocatalyst samples are characterized using XRD, SBET, SEM-EDX, UV-vis, TEM, VSM and VB-XPS. Test results show that the elements content of pure ferrite and CdS are in good agreement with the expected value, and theirs lattice parameters matches the theoretical value. The characteristic peaks corresponding to the spinel ferrite and CdS plane confirm the presence of both lattices in NPs. HR-TEM analysis also reveals the effective attachment of CdS onto the ferrite and red shift optical absorption spectra. In addition, the adsorption and photo-catalytic activities of the samples are systematically investigated by carrying out adsorbed and photo-degradation of methylene blue (MB) under dark adsorption and visible-light irradiation, respectively. Test results show that the adsorption rate of NPs is more faster, and it is suitable for Langmuir model to describe the adsorption equilibrium of MB by NPs, whose qmax is as high as 79.6 mg•g-1. Comparing the results on three tested samples, the photocatalytic activity of NPs is the highest, and its degradation rate for MB could still be retained above 50% after 5 repeated experiments, which is easy to be recovered by magnetic separation. In addition, the degradation mechanism of MB is also proposed based on the investigation of free radical and hole scavengers experiments, PL and ESR. © 2020, Science Press. All right reserved. 
Adsorption; Cadmium sulfide; Magnetic catalyst; Photocatalysis; Zn-Mn ferrite