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Scanning electron microscopy of (a) SiO2-NPs, (b) MWCNTs, and (c) MWCNTs/SiO2-NPs (Si-NPs = 1.5 atom %). (d) X-ray diffraction pattern, (e) Raman spectra for Si-NPs, MWCNTs, MWCNTs/SiO2-NP (Si-NPs = 1.5 atom %) nanocomposites, and MWCNTs/SiO2-NP (Si-NPs = 5.75 atom %) nanocomposites. First-order and second-order deconvoluted Raman spectra for (f) SiO2-NPs, (g) MWCNTs, (h) MWCNTs/SiO2-NP (Si-NPs = 1.5 atom %) nanocomposites, and (i) MWCNTs/SiO2-NP (Si-NPs = 5.75 atom %) nanocomposites.
