Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Solid-state 47,49Ti MNR determination of the phase distribution of titania nanoparticles
AU - Gervais, C.
AU - Smith, M.E.
AU - Pottier, A.
AU - Jolivet, J.-P.
AU - Babonneau, F.
PY - 2001
Y1 - 2001
N2 - 47,49Ti solid-state NMR spectra are reported from TiO2 nanoparticles. Particles heated below 700°C are predominantly anatase. The corresponding 47,49Ti NMR spectra can be simulated by using the NMR interaction parameters determined from bulk polycrystalline TiO2 with an additional Lorentzian smoothing, which increases as the particle size, as determined by X-ray diffraction, decreases. Above 700°C conversion to rutile increases with increasing calcination temperature. XRD and solid-state NMR provide complementary quantification of the phase distribution with very good agreement between the techniques when there are comparable quantities of rutile and anatase present. At low anatase content NMR is more sensitive to the phase distribution.
AB - 47,49Ti solid-state NMR spectra are reported from TiO2 nanoparticles. Particles heated below 700°C are predominantly anatase. The corresponding 47,49Ti NMR spectra can be simulated by using the NMR interaction parameters determined from bulk polycrystalline TiO2 with an additional Lorentzian smoothing, which increases as the particle size, as determined by X-ray diffraction, decreases. Above 700°C conversion to rutile increases with increasing calcination temperature. XRD and solid-state NMR provide complementary quantification of the phase distribution with very good agreement between the techniques when there are comparable quantities of rutile and anatase present. At low anatase content NMR is more sensitive to the phase distribution.
KW - radioisotope
KW - titanium
KW - titanium dioxide
KW - article
KW - high temperature
KW - nanoparticle
KW - nuclear magnetic resonance
KW - particle size
KW - simulation
KW - solid state
KW - X ray diffraction
U2 - 10.1021/cm0011918
DO - 10.1021/cm0011918
M3 - Journal article
VL - 13
SP - 462
EP - 467
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 2
ER -