【摘 要】
：
Nano-spherical Co2+-doped FeS2 was synthesized through a simple solvothermal method. The products were investigated using XRD, FE-SEM, BET, ICP, EDS, TEM, HRTEM, XPS, and UV-vis spectroscopy. The results indicated that Co2+ ion could change the particle n
【机 构】
：
College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China;Guangxi Ke
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Nano-spherical Co2+-doped FeS2 was synthesized through a simple solvothermal method. The products were investigated using XRD, FE-SEM, BET, ICP, EDS, TEM, HRTEM, XPS, and UV-vis spectroscopy. The results indicated that Co2+ ion could change the particle nucleation process and inhibited the particle growth of FeS2. In addition, when the content of doped Co2+ was 15％, the degradation efficiency of methylene blue (MB) achieved 60.72％ after 210 min irradiation, which increased by 52.01％ than that of the undoped FeS2. Moreover, comparison experiments also demonstrated that the M (M=Co2+, Co2+/Ni2+) -doped FeS2 photocatalytic activity efficiency sequence was Co2+ > Ni2+>Co2+/Ni2+. This is ascribed to the fact that the Co2+ doping could induce the absorption edge shifting into the visible-light region and increased the surface area of the samples. The effect mechanisms of M-doping on the band gap and the photocatalytic activity of FeS2 were also discussed.
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