Manuscript Title: pH-Dependent Adsorption of a-Amino Acids, Lysine, Glutamic Acid, Serine and Glycine, on TiO2 Nanoparticle Surfaces

Authors: Irem B. Ustunol, Natalia I. Gonzalez-Pech, and Vicki H. Grassian

Date: May 14, 2019

Overall Description of the Data Set: Here we share the data compiled for the figures in the manuscript entitled 
'pH-Dependent Adsorption of a-Amino Acids, Lysine, Glutamic Acid, Serine and Glycine, on TiO2 Nanoparticle Surfaces’. 
The methodology of the experiments is explained in detail in the manuscript.

Methods: Figures are made in OriginPro 2017 64 Bit Software Package. The data here are shared as text files.

Contributor: Irem B. Ustunol

Files:

Figure 1 related

Fig1b_insert is for Fig.1b FE-SEM image and the respective ATR-FTIR spectrum (insert) of the film.
Fig1c_insertGaussFit, Fig1c_Statistics and Fig1c_TEMdist are for Fig.1c TEM image size distribution analysis (insert).
Fig1d_TiO2XRD and Fig1d_XRDTiO2std are for Fig.1d XRD data of the TiO2 nanoparticles.


Figure 2 related

Fig.2a_LysSpeciation is for Fig.2a lysine Speciation diagram (left).
Fig.2a_LysATR-FTIR is for Fig.2a lysine solution ATR-FTIR spectra as a function of pH (right).
Fig.2b_GluSpeciation is for Fig.2b glutamic acid Speciation diagram (left).
Fig.2b_GluATR-FTIR is for Fig.2b glutamic acid solution ATR-FTIR spectra as a function of pH (right).


Figure 3 related

Fig3a_LyspH2 is for Fig.3a ATR-FTIR spectra of adsorbed lysine onto TiO2 NPs at pH 2
Fig3a_LyspH6 is for Fig.3a ATR-FTIR spectra of adsorbed lysine onto TiO2 NPs at pH 6
Fig3a_LyspH7.4 is for Fig.3a ATR-FTIR spectra of adsorbed lysine onto TiO2 NPs at pH 7.4
Fig3a_LyspH9 is for Fig.3a ATR-FTIR spectra of adsorbed lysine onto TiO2 NPs at pH 9

Fig3b_GlupH2 is for Fig.3b ATR-FTIR spectra of adsorbed glutamic acid onto TiO2 NPs at pH 2
Fig3b_GlupH6 is for Fig.3b ATR-FTIR spectra of adsorbed glutamic acid onto TiO2 NPs at pH 6
Fig3b_GlupH7.4 is for Fig.3b ATR-FTIR spectra of adsorbed glutamic acid onto TiO2 NPs at pH 7.4
Fig3b_GlupH9 is for Fig.3b ATR-FTIR spectra of adsorbed glutamic acid onto TiO2 NPs at pH 9


Figure 4 related

Fig.4a_SerSpeciation is for Fig.4a serine Speciation diagram (left).
Fig.4a_SerATR-FTIR is for Fig.4a serine solution ATR-FTIR spectra as a function of pH (right)
Fig.4b_GlySpeciationis for Fig.4b glycine Speciation diagram (left)
Fig.4b_GlyATR-FTIR is for Fig.4b glycine solution ATR-FTIR spectra as a function of pH (right)


Figure 5 related

Fig5a_SerpH2 is for Fig.5a ATR-FTIR spectra of adsorbed serine onto TiO2 NPs at pH 2
Fig5a_SerpH6 is for Fig.5a ATR-FTIR spectra of adsorbed serine onto TiO2 NPs at pH 6
Fig5a_SerpH7.4 is for Fig.5a ATR-FTIR spectra of adsorbed serine onto TiO2 NPs at pH 7.4
Fig5a_SerpH9 is for Fig.5a ATR-FTIR spectra of adsorbed serine onto TiO2 NPs at pH 9

Fig5b_GlypH2 is for Fig.5b ATR-FTIR spectra of adsorbed glycine onto TiO2 NPs at pH 2
Fig5b_GlypH6 is for Fig.5b ATR-FTIR spectra of adsorbed glycine onto TiO2 NPs at pH 6
Fig5b_GlypH7.4 is for Fig.5b ATR-FTIR spectra of adsorbed glycine onto TiO2 NPs at pH 7.4
Fig5b_GlypH9is for Fig.5b ATR-FTIR spectra of adsorbed glycine onto TiO2 NPs at pH 9


Figure 6 related

Fig6_Zeta is for Figure 6 Data points in Changes in the zeta-potential upon amino acids adsorption onto TiO2 nanoparticle surfaces
Fig6_zetaPolFit is for Figure 6 Polynomial fit results in Changes in the zeta-potential upon amino acids adsorption onto TiO2 nanoparticle surfaces


Electronic supplementary material related

FigS1_a is for Figure S1 BET isotherms of N2 adsorption/desorption and pore size distributions first trail result.
FigS1_b is for Figure S1 BET isotherms of N2 adsorption/desorption and pore size distributions second trail result.
FigS1_c is for Figure S1 BET isotherms of N2 adsorption/desorption and pore size distributions fhird trail result.

FigS3 is for Figure S3 The pH-dependent adsorption of amino acids onto TiO nanoparticles.

FigS4_a is for Figure S4 size distribution of TiO2 nanoparticles dispersed in lysine.
FigS4_b is for Figure S4 size distribution of TiO2 nanoparticles dispersed in glutamic acid.
FigS4_c is for Figure S4 size distribution of TiO2 nanoparticles dispersed in serine.
FigS4_d is for Figure S4 size distribution of TiO2 nanoparticles dispersed in glycine.
FigS4_e is for Figure S4 size distribution of TiO2 nanoparticles dispersed in MilliQ water only.
FigS4_f is for Figure S4 the summary of the pH-dependent hydrodynamic diameter.