(a)
(b)
(c)
(d)
(e)
Figure 2: The TG/DTA curves for prepared powders ZnO (a), Zn(OH)2 (b), Zn5(OH)8Cl2·H2O (c), ZnCO3 (d), and Zn5(CO3)2(OH)6 (e). Initial mass (m0) is indicated in the figures.