Table 1

Standard binding energy values

Samplesa

Fe 2p3/2

O 1s

Si 2p

N 1s

Ti 2p3/2


Naked Fe3O4 nanoparticles

710.9

531.5

APTES-coated Fe3O4 nanoparticles

710.5

531.5

102.5

399.5

Hybrid nanoparticles (FT-3)

710.0

530.0

101.4

400.7

458.3

Standard value

710.5b

531.4c, 529.9d

103.3e

399.8f

458.8g


Standard binding energy values for Fe 2p, Si 2p, N 1s, O 1s, and Ti 2

    p
and those resolved in the naked, amino-functionalized, and titania coating ultrafine Fe3O4 nanoparticles. aUnit for binding energy: eV; bFe in Fe3O4; cO in Fe3O4; dO in TiO2; eSi in SiO2; fN in N-C group; g Ti in TiO2, Δ = 5.54 eV

Wu et al. Nanoscale Research Letters 2011 6:533   doi:10.1186/1556-276X-6-533

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