Synthesis and characterization of zinc oxide from absorption of carbon dioxide
2009 年 34 巻 2 号 p. 221-224
詳細
2009 年 34 巻 2 号 p. 221-224
A pH-stat continuous-bubble-column scrubber using CO2-Zn(NO3)2-NaOH as a reacting system was used to prepare the precursors of ZnO. The experiments were carried out in the pH range of 10-13 and in the gas-flow rate range of 3-8 L/min. The process favored the formation of zinc carbonate hydroxide hydrate at lower pH values and/or higher gas-flow rates, while the major precursor was hydroxide hydrate at higher pH values. To quantitatively determine the composition of precursors, the powders were examined by XRD analysis. Also, the decomposition temperatures of precursors were observed from thermal analysis. Examinations of photoluminescence (PL), XRD, and BET for nano-zinc oxide particles obtained in here are required and the results are compared with that standard zinc oxide powders.
