Effect of Mineralizer Concentration on ZnO Crystals Synthesized by Hydrothermal Method

Abstract:

In this paper, the ZnO crystal was synthesized using hydrothermal method through 24 hours reaction with 35 % filling factor at 430°C. When the mineralizer concentration is rather low (eg. lmol/L NaOH), only ZnO microcrystal is produced. The mineralizer concentration increases, the larger crystal was present. When 5 mol/L NaOH served as mineralizer, the extent of the synthesized crystal was nearly 500m. The ZnO cryslals with length of 1500m were present when 3ml/L KOH served as mineralizer. Respectively when 3mol/L NaOH and lmol/L KBr were used as mineralizer, the extent of the synthesized crystal was nearly 700m , the diameter was 200m and the exposed faces m { 100}, p { 101 } was complete , so we obtained the higher quality crystals. Besides the larger crystal, a great deal of microcrystal and nanocrystallites cluster was also present in the product.

• Periodical: Advanced Materials Research (Volumes 875-877)
• Pages: 1372-1376
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.875-877.1372
• Online since: February 2014
• Authors: Wen Li Zheng, Wei Yang
• Keywords: Crystal Morphology, Hydrothermal Synthesis, Mineralizer, ZNO

References

[1] Bagnall D M, Chen Y F, Zhu Z, etal: Appl. Phys. Lett. Vol. 70(17) (1997), pp.2230-2232.

[2] Tang Z K, Wang G K and Yu P: Appl. Phys. Lett. Vol. 72(25) (1998), pp.3270-3272.

[3] Bagnall D M, Chen Y F, Zhu Z, etal: Appl. Phys. Lett. Vol. 73(8) (1998), pp.1038-1041.

[4] Garces N Y, Wang L, Bai L, etal: Appl. Phys. Lett. Vol. 18(4)(2002), pp.622-624.

[5] Jing L Q, Sun X, Xu Z L, etal: Chin Jour of Cata Vol. 23(1) (2002), pp.37-40.

[6] Hou T Ng, Jun Li, Michael K Smith, etal: Science Vol. 300(23) (2003), p.1249.

[7] Huang Michael H, Mao Samuel, Feick Henning, etal: Science Vol. 292(8) (2001), pp.1897-1899.

[8] Yan Haoquan, He Rongrui, Juhnson Justin, etal: J Am Chem Soc Vol. 125(16(2003), pp.4728-4729.

[9] Hua S K, Zhong W Z:. J Synt Crys Vol. 23(3) (1994), pp.177-180.

[10] Liu B, Zeng H C: J Am Chem Soc Vol. 125(1) (2003), pp.4430-4431.

[11] Gao L, Ji L, Xu H, etal: J Am Chem Soc Vol. 124(50) ( 2002), pp.4864-4865.

[12] Urbieta A, Femandez P, Piqueras J, eta: l. J Phys D: Appl Phys Vol. 34(7) (2001), pp.2945-2949.

[13] Sekiguchi T, Miyashita S, Obara K, etal: J of Crysal Growth Vol. 214-215( 2000), pp.72-76.

[14] Eriko Ohshima, etal: J of Crysal Growth Vol. 260(2004), p.166.

[15] Florescu D I, Mourokh L G, Pollak F H, etal: J Appl Phys Vol. 91(2) ( 2002), pp.890-892.

[16] Wei Z R, Dong G Y, Wang L M, etal: Chin Jour of Lumi Vol. 24(4) (2003), pp.353-357.