융제법을 이용한 티탄산칼륨 휘스커의 합성과 특성
Synthesis and characterization of potassium titanate whisker by flux method
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
K2Ti6O13 휘스커를 합성하는 방법은 고상법, 수열합성법, 소성법, 융제법, 서냉법, 용융법, KDC법, 졸-겔법 등이있다. 융제법을 이용하여 K2Ti6O13을 합성하는 연구를 진행하였다. 칼륨 전구체의 종류와 반응온도와 시간을 조절하여 합성된 K2Ti6O13의 입자크기와 분포를 제어하였고, 합성된 K2Ti6O13의 평균입자 크기는 500 nm~2 μm였다. KOH와 TiO2의 비율, pH(KOH 첨가량), 반응온도와 반응시간 등의 공정변수에 대해 연구를 진행하였다. 합성된 K2Ti6O13은 X-선 회절분석기와전계방사 주사전자현미경을 이용하여 특성평가를 실시하였다.
Abstract
Method for synthesizing a K2Ti6O13 whisker is a solid-state method, hydrothermal synthesis method, calcination method, flux method, slow-cooling method, melting method, kneading-drying-calcination method, sol-gel method etc. K2Ti6O13 whisker have been synthesized by a flux method. The average size and distribution of the synthesized K2Ti6O13 whisker can be controlled by a kind of potassium precursors and reaction temperature and time. The average size of the synthesized K2Ti6O13 whisker was about in the size range of 500 nm to 2 μm. The effect of synthesis parameters, such as the molar ratio of KOH to TiO2, pH, reaction temperature and time, are discussed. The synthesized K2Ti6O13 whisker were characterized by x-ray diffraction analysis (XRD), field emission scanning electron microscopy (FE-SEM).
참고문헌 (23)
- M. A. Siddiquia, "Comparative study of potassium hexatitanate (K2Ti6O13) whiskers prepared by sol-gel and solid state reaction routes", Appl. Surf. Sci, 258, pp.7354~ (2012)
- T. Endo, "Crystal growth of poatassium titanates in the system K2OFe 2O3-TiO2", J. Cryst. Growth, 78, pp.423~ (1986)
- X. Zhang, "A simple molten salt method to synthesize single-crystalline potassium titanate nanobelts", Mater Lett, 63, pp.887~ (2009)
- X. Wang, "Behavior of potassium titanate whisker in simulated body fluid", Mater Lett, 135, pp.139~ (2014)
- X. Meng, "Effects of titania different phases on the microstructure and properties of K2Ti6O13 nanowires", Solid State Comm, 137, pp.146~ (2006)
- Q. Wang, "Formation and structural characterization of potassium titanates and the potassium ion exchange property", Mater Res Bull, 44, pp.1973~ (2009)
- J. K. Lee, "Microstructural evolution of potassium titanate whiskers during the synthesis by the calcination and slow-cooling method", J. Mater Sci, 31, pp.5493~ (1996)
- Q. Wang, "Molten salt synthesis of crystalline photocatalytic potassium octatitanate whiskers from KCl melt", Mater Lett, 155, pp.38~ (2015)
- H. Manyu, "Structural, electronic and elastic properties of potassium hexatitanate crystal from first-principles calculations", Phys. B Condens Matter, 407, pp.2811~ (2012)
- S. O. Kang, "Study on the growth of potassium titanate nanostructures prepared by sol-gel-calcination process", Mater Lett, 61, pp.473~ (2007)
- Y. Li, "Synthesis of potassium hexatitanate whisker with high thermal stability from Ti-bearing electric arc furnace molten slag", Ceram Int, 42, pp.11294~ (2016)
- T. Zaremba, "Methods of manufacturing of potassium titanate fibres and whiskers. A review", Mater Sci, 28, pp.25~ (2010)
- N. Bao, "Calcination syntheses of a series of potassium titanates and their morphologic evolution", Cryst. Growth Des, 2, pp.437~ (2002)
- N. Bao, "Low-temperature controllable calcination syntheses of Potassium dititanate", AIChE J, 50, pp.1568~ (2004)
- A. V. Gorokhovsky, "Synthesis of potassium polytitanate precursors by treatment of TiO2 with molten mixtures of KNO3 and KOH", J. Eur. Ceram Soc, 24, pp.3541~ (2004)
- L. Xu, "Environmentally friendly growth of single-crystalline K2Ti6O13 nanoribbons from KCl flux", Mater Char, 61, pp.245~ (2010)
- S. Takaya, "Fabrication of the photocatalyst thin films of nano-structured potassium titanate by molten salt treatment and its photocatalytic activity", Surf Coating Tech, 275, pp.260~ (2015)
- L. Shen, "Hydrothermal splitting of titanate fibers to single-crystalline TiO2 nanostructures with controllable crystalline phase, morphology, microstructure, and photocatalytic activity", J. Phys. Chem. C, 112, pp.8809~ (2008)
- J. Park, "Photocatalytic activity of hydroxyapatite-precipitated potassium titanate whiskers", J. Alloy Comp, 492, pp.57~ (2010)
- R. Luo, "The mechanical and thermal insulating properties of resinderived carbon foams reinforced by K2Ti6O13 whiskers", Mater Sci. Eng, 528, pp.2023~ (2011)
- Y. Liu, "A novel way to synthesize potassium titanates", Mater Lett, 60, pp.203~ (2006)
- N Bao, "High quality and yield in potassium titanate whiskers synthesized by calcination from hydrous titania", J. Am. Ceram. Soc, 87, pp.326~ (2004)
- Y Cao, "Hydrothermally synthesized barium titanate nanostructures from K2Ti4O9 precursors: Morphology evolution and its growth mechanism", Mater Res. Bull, 57, pp.162~ (2014)