Figure 3.

XRD spectra of different Ce-TiO2coatings. (a) pure TiO2, (b) 0.2% Ce-TiO2, (c) 1.2% Ce-TiO2, and (d) 2.2% Ce-TiO2.

Li et al. Nanoscale Research Letters 2012 7:227   doi:10.1186/1556-276X-7-227
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