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Fig. 3 | Journal of Nanobiotechnology

Fig. 3

From: Temporally and spatially resolved molecular profiling in fingerprint analysis using indium vanadate nanosheets-assisted laser desorption ionization mass spectrometry

Fig. 3

(a) Tauc plots of IVONSs:Sm and IVONSs. Energy band structure of (b) IVONSs and (c) IVONSs:Sm. (d) Calculated DOS of IVONSs:Sm. (e) AFM and (f) SPV images of IVONSs, and (g) AFM and (h) SPV images of IVONSs:Sm. (i) Calculated Gibbs free-energy diagram for the adsorption and dissociation process of fatty acid over IVONSs:Sm and IVONSs surfaces, respectively. (j) Reproducibility of MS signal intensities for LA and OA using different matrices. (k) Signal relative deviation of MS signal intensities using IVONSs:Sm. (l) IVONSs:Sm-assisted LDI-MS spectra of different concentrations of LA and OA in negative-ion mode. (m) IVONSs:Sm-assisted LDI-MS spectra of LA and OA (500 µM) in different concentrations of NaCl in negative-ion mode. (n) IVONSs:Sm-assisted LDI-MS spectra of a blank sample (green lines) and a mixture of LA and OA (yellow lines) with freshly prepared IVONSs:Sm and IVONSs:Sm after two months of preservation

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Journal of Nanobiotechnology

ISSN: 1477-3155

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