Synthesis of Nanoparticles
Crystallization and supercritical fluid technologies are the two main research areas in our laboratory. Crystallization is an energy-saving operation to produce powders that meets specifications, including particle size distribution, crystal habit, and purity. The crystallization technology has been applied to almost every industry. On the other hand, supercritical fluid technology, which has been applied to the food and fine chemicals industry, has a distinct feature of low pollution, and thus will become an important technology in the chemical industry. Some of the research topics in our laboratory are described below.
Synthesis of Nanoparticles
Some unexpected results were obtained by using the two-step growth model to analyze the crystallization data:
(1) The mass-transfer coefficient is a constant for a system when a fluidized-bed crystallizer is operated near the terminal velocity of the crystal; (2) Impurity would affect the kinetic order of the surface-reaction step, (3) Interfacial Supersaturation is an important factor to influence the secondary nucleation rate.
Nanoparticle possesses distinct properties so that its synthesis is one of the most important topics in material science. In our lab, reverse emulsion and high-grarity techniques are developed for producing spherical ZrO2 particles and calcium carbonate of various shapes with the mean size ranging from tens of nanometers to a few micrometers.
1.Editor-in-Chief, Chinese Institute of Chemical Engineers. (July 2000 ~ June 2006)
1.C. Y. Tai, M.-C. Chang, C.-K. Wu, and Y.-C. Lin, “Interpretation of Calcite Growth Rate Data Using the Two-step Crystal Growth Model,” Chem. Eng. Sci., 61, 5346 (2006). (SCI, EI)
2.C. Y. Tai, P. C. Chen, and T. M. Tsao, “Growth Kinetics of CaF2 in a pH-Stat Fluidized-Bed Crystallizer,” J. Crystal Growth, 290, 576 (2006). (SCI, EI)
3.Y.-S. Chen, C. Y. Tai, M.-H. Chang, and H.-S. Liu, “Characteristics of Micromixing in a Rotating Packed Bed,” J. Chin. Inst. Chem. Engrs., 37, 63 (2006). (合著) (SCI, EI)
4.Y.-S. Chen, F.-Y. Lin, C.-C. Lin, C. Y. Tai, and H.-S. Liu, “Packing Characteristics for Mass Transfer in a Rotating Packed Bed,” I&EC Research, 45, 6846 (2006). (合著) (SCI, EI)
5.C. Y. Tai, C.-T. Tai, and H.-S. Liu, “Synthesis of Submicron Barium Carbonate Using a High-Gravity Technique,” Chem. Eng. Sci., 52, 292 (2006). (合著) (SCI, EI)
6.C. B. Tsai, W. T. Hsu, M. D. Shih, C. Y. Tai, C. K. Hsieh, W. C. Hsu, R. T. Hsu, and C. W. Lan, “Improvements of Uniformity and Stoichiometry for Zone-Leveling Czochralski Growth of MgO-doped LiNbO3 Crystals,” Material Sci. and Eng. B, 128, 161 (2006). (合著) (SCI, EI)
7.Hameed, W. C. Yu, Z. B. Chen, C. Y. Tai, and C. W. Lan, “Effect of Sodium Toluene Sulfonate on the Nucleation, Growth and Characterization of DAST Single Crystals,” J. Crystal Growth, 292, 510 (2006). (合著) (SCI, EI)
8.C. Y. Tai, B.-Y. Hsiao, and H.-Y. Chiu, “Preparation of Salazane Grafted Yttria-Stablized Zirconia Nanoparticles via Water/CTAB/Hexanol Reverse Microemulsion,” Material Letters, 61, 834 (2007). (SCI, EI)
9.C. Y. Tai, C.-T. Tai, M.-H Chang ,and H.-S. Liu, “Synthesis of Magnesium Hydroxide and Oxide Nanoparticles Using a Spinning Disk Reactor,” I & EC Res., 46, 5536 (2007). (合著) (SCI, EI)
10.W.-C Chien, C.-C Lee, and C. Y. Tai, “ Heterogeneous Nucleation Rate of Calcium Carbonate Derived form Induction Period,” I & EC Res., 46, 6435 (2007). (SCI, EI)
11.C. Y. Tai, Y.-H. Wang and H.-S. Liu, “A Green Process for Preparing Silver Nanoparticles Using Spinning Disk Reactor,” AIChE J., 54, 445 (2008) (合著) (SCI, EI)
12.C. Y. Tai, C.-K. Wu, and M.-C. Chang, “Effect of Magnetic Field on the Crystallization of CaCO3 Using Permanent Magnets,” Chem. Eng. Sci., 63, 5606 (2008). (SCI, EI)
13.C. Y. Tai, and C.-K. Chen, “Particle Morphology, Habit and Size Control of CaCO3 Using Reverse Microemulsion Technique,” Chem. Eng. Sci., 63, 3632 (2008). (SCI, EI)
14.C. Y. Tai, M.-C. Chang, R.-J. Shieh, and Ted. G. Chen, “Magnetic Effects on Crystal Growth Rates of Calcite in a Constant-Composition Environment,” J. Crystal Growth, 310, 3690 (2008). (SCI, EI)
15.Y.-S. Chen, Y.-C. Hsu, C.-C. Lin, C. Y. Tai, and H.-S. Liu, “Volatile Organic Compounds Absorption in a Cross-Flow Rotating Packed Bed,” Environ. Sci. Technol., 42, 2631 (2008). (合著) (SCI, EI)
16.T. Y. Wang, Y.-C. Lin, C. Y. Tai, R. Sivakumar, D. K. Rai, and C. W. Lan, “A Novel Approach for Recycling of Kerf Loss Silicon from Cutting Slurry Waste for Solar Cell Application,” J. Crystal, Growth, 310, 3403 (2008). (合著) (SCI. EI).
17.C. Y. Tai, Y.-H. Wang, Y. W. Kuo, M. H. Chang, and H. S. Liu, ”Synthesis of Silver Particles below 10 nm Using Spinning Disk Reactor,” Chem. Eng. Sci., 64, 3112 (2009). (合著) (SCI. EI)
18.C. Y. Tai, Y. H. Wang, C.-T. Tai, and H.-S. Liu, “Preparation of Silver Nanoparticles Using a Spinning Disk Reactor in a Continuous Mode,” I&EC Res., 48, 10104 (2009). (合著) (SCI. EI)
19.C. Y. Tai, C.-D. Tai, and M.-H. Chang, “Effect of Interfacial Supersaturation on Secondary Nucleation,” J. Taiwan Inst. Chem. Engrs., 40, 439 (2009). (SCI. EI)
20.C. Y. Tai, “Experimental Techniques for Indentifying Operating Variables of Crystal Growth and Nucleation—From Readily-Soluble Salts to Sparingly-Soluble Salts,” J. Taiwan Inst. Chem. Engrs., 40, 682 (2009) (SCI. EI)
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