Figure 2

SEM micrographs and EDX spectrum.

a, SEM image of the NLM:Ln³⁺ nanomaterials obtained at 30 ^oC for 10 h. b, SEM image of the NLM:Ln³⁺ nanomaterials obtained at 60 ^oC for 10 h. c, SEM image of the NLM:Ln³⁺ nanomaterials obtained at 90 ^oC for 10 h. d, SEM image of the NLM:Ln³⁺ nanomaterials obtained at 120 ^oC for 10 h. e, SEM image of the NLM:Ln³⁺ nanomaterials obtained at150 ^oC for 10 h. f, EDX spectrum of the NLM:Ln³⁺ nanomaterials prepared at 90 ^oC for 10 h.