Synthesis of three-dimensional cactus-shaped SnO2 crystals via thermal evaporation of Sn
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
SnO2 crystals were fabricated by thermal evaporation of Sn powder at 900°C in an oxygen atmosphere without any catalyst. The growth time was varied in a range of 1 ~ 3 h in order to investigate the morphological change during growth of thecrystals. Scanning electron microscopy, X-ray diffractometry, energy dispersive X-ray spectroscopy, and cathodoluminescencespectroscopy were used to characterize the morphologies, crystal structures, and luminescence properties of the SnO2 crystals. X-ray diffraction analysis showed that the SnO2 crystals had a rutile crystallographic structure. When the growth time was1 h, SnO2 microrods with a rough surface were observed. With an increase of the growth time to 2 h, many nanowires on theSnO2 microrods such that microrod-nanowire assembly had a cactus-like appearance. When the growth time was furtherincreased to 3 h, micro/nanowires were observed. A strong visible emission peak centered at about 480 nm was observed inthe room temperature cathodoluminescence spectra of all the samples.
Abstract
SnO2 crystals were fabricated by thermal evaporation of Sn powder at 900°C in an oxygen atmosphere without any catalyst. The growth time was varied in a range of 1 ~ 3 h in order to investigate the morphological change during growth of thecrystals. Scanning electron microscopy, X-ray diffractometry, energy dispersive X-ray spectroscopy, and cathodoluminescencespectroscopy were used to characterize the morphologies, crystal structures, and luminescence properties of the SnO2 crystals. X-ray diffraction analysis showed that the SnO2 crystals had a rutile crystallographic structure. When the growth time was1 h, SnO2 microrods with a rough surface were observed. With an increase of the growth time to 2 h, many nanowires on theSnO2 microrods such that microrod-nanowire assembly had a cactus-like appearance. When the growth time was furtherincreased to 3 h, micro/nanowires were observed. A strong visible emission peak centered at about 480 nm was observed inthe room temperature cathodoluminescence spectra of all the samples.
참고문헌 (24)
- Sitthisuntorn Supothina, "Hydrothermal synthesis and gas-sensing property of SnO2 nanorod clusters", Journal of Ceramic Processing Research, 14(2), pp.226~229 (2013), 청정에너지연구소[DOI]
- H. Yu, , J. Alloy. Compd, 724, pp.121~129 (2017)
- R. Zhao, , J. Phys. Chem. Solids, 120, pp.173~182 (2018)
- Xiao-xue Lian, "Synthesis of coryphantha elephantidens-like SnO2 nanospheres and their gas sensing properties", Current Applied Physics, 19(7), pp.849~855 (2019), 한국물리학회[DOI]
- T. Li, , Sens. Actuat. BChem, 231, pp.120~128 (2016)
- Je-Myung Jeong, "One-pot synthesis and characterization of a mixture of Ga2O3 and SnO2 nanofibers", Journal of Ceramic Processing Research, 15(6), pp.428~432 (2014), 청정에너지연구소[DOI]
- S. H. Sun, , Appl. Phys. A, 76, pp.287~289 (2003)
- Hyoun Woo Kim, "Controlled Growth of SnO2 Nanorods by Thermal Evaporation of Sn Powders", Journal of the Korean Physical Society, 51(I), pp.198~203 (2007), 한국물리학회
- W. Jin, , Mater. Lett, 180, pp.38~41 (2016)
- H. Wang, , Chem. Mater, 26, pp.123~133 (2014)
- J. R. Hunag, , Sens. Actuat. B-Chem, 147(2), pp.467~474 (2010)
- H. Wang, , Cryst. Growth Des, 11, pp.2942~2947 (2011)
- R. Yang, , Acta Mater, 58, pp.866~874 (2010)
- Y. L. Wang, , Scripta Mater, 61, pp.234~236 (2009)
- Q. Wang, , J. Phys. Chem. C, 114, pp.22671~22676 (2010)
- Z. Guo, , Mater. Today, 14, pp.42~49 (2011)
- S. H. Mohamed, , J. Alloy. Compd, 510, pp.119~124 (2012)
- N. M. Shaalan, , Sens. Actuat. B-Chem, 153(1), pp.11~16 (2011)
- Won Il Park, "Growth kinetics, crystal structures, and properties of silicon nanowires grown by a metal-catalyzed vapor-liquid-solid process", Journal of Ceramic Processing Research, 9(6), pp.666~671 (2008), 청정에너지연구소[DOI]
- R. S. Wagner, , Appl. Phys. Lett, 4, pp.89~90 (1964)
- D. Zhang, , Mater. Sci. Eng, 279, pp.012025~ (2017)
- S. H. Luo, , Prog. Solid State Chem, 33, pp.287~292 (2005)
- S. Luo, , Nanotechnology, 17, pp.1695~1699 (2006)
- S. Luo, , Appl. Phys. Lett, 88, pp.183112~ (2006)