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. 2015 May 13;27(11):3966–3978. doi: 10.1021/acs.chemmater.5b00856

Figure 5.

Figure 5

27Al MAS NMR spectra of the Al-doped goethite samples: (a) GA6, (b) GA13, (c) GA27, (d) GB5, and (e) GB7. The spectra were acquired on a 360 MHz magnet, on-resonance for the diamagnetic species (i.e., close to 0 ppm), at room temperature. The isotropic resonance of the diamagnetic component is labeled in (e).