Figure 1 | Scientific Reports

Figure 1

From: The competing effects of microbially derived polymeric and low molecular-weight substances on the dispersibility of CeO2 nanoparticles

Figure 1

ATR-FTIR spectra of the lyophilized samples: (a) ES, (b) SS, (c) PS, (d) CeNP reacted with ES in 1.0 mM NaCl at pH 6.0 for 24 hours, (e) CeNP reacted with SS in 1.0 mM NaCl at pH 6.0 for 24 hours, (f) CeNP reacted with PS in 1.0 mM NaCl at pH 6.0 for 24 hours, (g) CeNP reacted with PS + 160 µM P in 1.0 mM NaCl at pH 6.0 for 24 hours, and (h) CeNP reacted with 160 µM of P in 1.0 mM NaCl at pH 6.0 for 24 hours. Spectra (d–h) are difference spectra (pristine CeNP spectrum was subtracted from the original spectrum).

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