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. 2017 Jan 25;18(2):249. doi: 10.3390/ijms18020249

Figure 1.

Figure 1

X-ray diffraction (XRD) patterns and phase assignment of the samples: P25 (a); P25-1% Fe–N (b); TiO2-1% Fe–N pH ~8.5 (c); and TiO2-1% Fe–N pH ~5.5 (d).