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摘要：本文研究的是物理纳米的相关技术，专业性颇强。This paper presented a synthesis of CdTe and CdSe semiconductor nanocrystals by size-selective precipitation technique via the water-based colloidal route. CdTe/CdSe nanoparticles were characterized mainly by ultraviolet-visible spectrophotometry (UV-Vis). X-ray diffraction (XRD) was also applied to analyze the synthesized samples. And the influence of the size-selective precipitation technique on the nanoparticles was investigated by UV-Vis. The experimental results demonstrated that the size-selective precipitation are able to isolate CdTe/CdSe nanoparticles of different sizes and purify the nanoparticles as well.

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