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Figure 2

From: A mild aqueous synthesis of ligand-free copper nanoparticles for low temperature sintering nanopastes with nickel salt assistance

Figure 2

Results of morphological observation by FE-SEM and crystal structure analysis of Cu NPs by XRD. (a) FE-SEM images and (b) XRD patterns of the solid particles. (i): [Ni salt]/[CuO] = 0, C0; (ii): [NiCl2]/[CuO] = 0.10, CN; (iii): [Ni(NO3)2]/[CuO] = 0.10; (iv): [NiSO4]/[CuO] = 0.10; (v): [NiCl2]/[CuO] = 0.050; (vi): [NiCl2]/[CuO] = 0.20. The scale bar shown in (a)-(vi) is common to all images in (a).

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