Citation: LONG Fei, ZHANG Jin, ZHANG Ming-Yue, HE Jin-Yun, WU Xiao-Li, ZOU Zheng-Guang. Ni-Doped FeS2: Solvothermal Synthesis and the Visible-Light Photocatalytic Properties[J]. Chinese Journal of Inorganic Chemistry, ;2015, (6): 1119-1124. doi: 10.11862/CJIC.2015.179
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Ni-doped pyrite FeS2 were synthesized through a solvothermal method using FeSO4·7H2O, Na2S2O3·5H2O and NiSO4·6H2O as raw materials. The products were characterized by X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), field emission scanning electron microscope (FE-SEM), UV-Vis diffuse reflectance spectra (DRS) and Raman spectroscopy. The results showed that appropriate amount of Ni doping facilitated the transformation of the marcasite to pyrite. After Ni2+ doping, the visible-light-driven photocatalytic performance of the FeS2 was greatly enhanced. Methylene blue (MB) was decomposed 62.8% within 210 min using Ni0.125Fe0.875S2 as photocatalyst, which was 26.2% higher than that of the pristine FeS2.
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