International Journal of Photoenergy / 2012 / Article / Tab 1

Research Article

Neodymium-Doped with Anatase and Brookite Two Phases: Mechanism for Photocatalytic Activity Enhancement under Visible Light and the Role of Electron

Table 1

Summary of the physicochemical properties of TiO2 and Nd-doped TiO2 composites.

Sample Average size crystalline size (nm)aPhase contentb (%)BET surface area    (m2·g−1)Pore size (nm)cTotal volume pore   (cm3·g−1)Bandgap (eV)
AnataseBrookite

Pure TiO220.3213.9786.0272.463.540.1723.11
Nd-doped TiO2
(Ti : Nd = 23 : 1)
20.329.50090.4967.182.400.08302.57
Nd-doped TiO2
(Ti : Nd = 11 : 1)
20.357.66092.3559.542.760.08312.33

aDetermined by XRD using Scherrer equation based on (121) peak.
bCalculated using the formula in [24].
cCalculated from .

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