Hydrothermal synthesis and characterization of uniform β-Ga2O3 hollow nanostructures by carbon nanospheres
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This study examined the preparation of monoclinic β-Ga2O3 hollow nanostructures with various firing temperatures ranging from 500 to 900 o C by using hydrothermal and calcination processes. The X-ray diffraction patterns indicate that β-Ga2O3 hollow nanostructures were synthesized at temperatures over 600 o C. The Ga(OH)CO3 components of the shell were confirmed by Fourier transform infrared spectrometry. An investigation with field-emission scanning electron microscopy indicated a white body color of β-Ga2O3 hollow nanostructures at 800 o C with diameters of about 200 nm. However, the sample calcined at 500 o C showed brown body color and was not perfectly crystallized. The cathodoluminescence spectrum revealed blue emission at 300-500 nm, which was assigned to vacancies in β-Ga2O3 hollow nanostructures.
Abstract
This study examined the preparation of monoclinic β-Ga2O3 hollow nanostructures with various firing temperatures ranging from 500 to 900 o C by using hydrothermal and calcination processes. The X-ray diffraction patterns indicate that β-Ga2O3 hollow nanostructures were synthesized at temperatures over 600 o C. The Ga(OH)CO3 components of the shell were confirmed by Fourier transform infrared spectrometry. An investigation with field-emission scanning electron microscopy indicated a white body color of β-Ga2O3 hollow nanostructures at 800 o C with diameters of about 200 nm. However, the sample calcined at 500 o C showed brown body color and was not perfectly crystallized. The cathodoluminescence spectrum revealed blue emission at 300-500 nm, which was assigned to vacancies in β-Ga2O3 hollow nanostructures.
참고문헌 (25)
- Z. Dong, , Adv. Mater, 24, pp.1046~1049 (2012)
- S. Liu, , Nanotechnology, 20, pp.325606~325612 (2009)
- S. -W. Cao, , J. Phys. Chem. C, 112, pp.1851~1856 (2008)
- B. Li, , Langmuir, 22, pp.9380~9385 (2006)
- X. W. Lou, , Adv. Mater, 18, pp.2325~2329 (2006)
- X. W. Lou, , Adv. Mater, 20, pp.3987~4019 (2008)
- S. -W. Kim, , J. Am. Chem. Soc, 124, pp.7642~7643 (2002)
- F. Caruso, , Science, 282, pp.1111~1114 (1998)
- M. Shang, , Cryst. Growth. Des, 9, pp.991~996 (2009)
- J. Yu, , Y. Dai. Cryst. Growth. Des, 9, pp.1474~1480 (2009)
- M. Rebein, , Appl. Phys. Lett, 81, pp.250~ (2002)
- R. Pohle, , Sens. Actuators B, 68, pp.151~ (2000)
- C. H. Liang, , Appl. Phys. Lett, 78, pp.3202~3204 (2001)
- Y. Hou, , Environ. Sci. Technol, 40, pp.5799~5803 (2006)
- L. -C. Tien, , J. Am. Ceram. Soc, 94, pp.3117~3122 (2011)
- K. W. Chang, , Adv. Mater, 16, pp.545~549 (2004)
- W.Y. Shen, , J. Electrochem. Soc, 152, pp.H25~H28 (2005)
- M. Ristiæ, , Mater. Lett, 59, pp.1227~1233 (2005)
- L. S. Esteban, , J. Porous Mat, 3, pp.169~174 (1996)
- U. Rambabu, , J. Mater. Sci, 42, pp.9262~9266 (2007)
- S. C. Vanithakumari, , Adv. Mater, 21, pp.3581~3584 (2009)
- X. Sun, , Angew. Chem. Int. Ed, 43, pp.3827~3831 (2004)
- T. Harwig, , J. Solid State Chem, 23, pp.205~ (1978)
- C. H. Liang, , Appl. Phys. Lett, 78, pp.3202~ (2001)
- G. Sinha, , Mater. Chem. Phys, 114, pp.644~ (2009)