Figure 2
(a)–(d) Simulated X-ray powder diffraction patterns of PbSO4 crystal under a Cu anode. (a) An ideal crystal; (b) an average grain size of 3 nm; (c) an orientation factor of 0.3, a thermal-vibration derivation of 0.2 and a zero shift of 1.2°; and (d) with background intensity. |