Analysis of growth parameters for hydrothermal synthesis of ZnO nanoparticles through a statistical experimental design method |
| |
Authors: | Shao-Hwa Hu Yi-Chuan Chen Chyi-Ching Hwang Cheng-Hsiung Peng and Dah-Chuan Gong |
| |
Affiliation: | (1) Department of Industrial and Systems Engineering, College of Electrical Engineering and Computer Science, Chung Yuan Christian University, Chungli, Taoyuan 320, Taiwan, ROC;(2) Chemical Systems Research Division, Chung Shan Institute of Science and Technology, Longtan, Taoyuan 325, Taiwan, ROC;(3) Department of Applied Chemistry and Materials Science, Chung Cheng Institute of Technology, NDU, Dasi, Taoyuan 335, Taiwan, ROC;(4) Department of Chemical Engineering and Materials Science, Ming Hsin University of Science and Technology, Hsinfeng, Hsinchu 304, Taiwan, ROC; |
| |
Abstract: | Nanocrystalline ZnO particles were synthesized from an aqueous solution composed of zinc acetate dihydrate (Zn(CH3COO)2·2H2O) and urea (H2NCONH2). A precipitating precursor, basic zinc carbonate (Zn5(CO3)2(OH)6), was first formed by hydrothermally treating the solution at 120 °C for 2–4 h. Nanocrystalline ZnO particles were then obtained
by calcining the precursors at 350–650 °C for 0.5–2 h. The synthesis products were characterized using thermogravimetry–differential
scanning calorimetry–mass spectrometry, X-ray diffraction, scanning electron microscopy, transmission electron microscopy
and photoluminescence techniques. Based on the experimental results, a possible reaction mechanism for the ZnO formation was
proposed. The effects of experimental parameters (namely, the hydrothermal treatment time, the calcination time, and the calcination
temperature) on the characteristics of the resulting ZnO products (i.e., the crystalline size and the photoluminescence properties)
were analyzed by the Taguchi method to attain the optimum synthesis conditions. By using the appropriate parameters derived
from this method, we verified that the optimized synthesis provided a yield of ~70% and that the resulting ZnO particles possessed
the characteristics of a ~25 nm crystalline size and a satisfactory photoluminescence property. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|