Controlled Synthesis of ZnO Nanospheres using Hydrothermal Process

被引：0

作者：

Foe, K. ^{[1
]}

Boland, P. ^{[1
]}

Gu, D. ^{[1
]}

Baumgart, H. ^{[1
]}

Abdel-Fattah, T. M. ^{[2
]}

Jeong, M. S. ^{[3
]}

Namkoong, G. ^{[1
]}

机构：

[1] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA

[2] Christopher Newport Univ, Dept Biol Chem & Environm, Newport News, VA 23606 USA

[3] Gwangju Inst Sci & Technol, APRI, Gwangju 500712, South Korea

来源：

STUDENT POSTERS (GENERAL) - 218TH ECS MEETING | 2011年 / 33卷 / 21期

基金：

美国国家科学基金会;

关键词：

NANOSTRUCTURES; MICROSPHERES; MORPHOLOGY; SPHERES; PH;

D O I：

10.1149/1.3557571

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel, versatile, and template-free method has been developed to synthesize solid crystalline zinc oxide (ZnO) spheres via hydrothermal process at a temperature of 100 degrees C within 2h. Using an aqueous solution of zinc acetate dihydrate, ammonium hydroxide, ethanol, and urea, the effects of pH values and structure directing agents on the morphology of ZnO crystals were systematically investigated. We found that the key parameters affecting ZnO morphologies are the pH value of the solution as well as the structure directing agents. When the structure directing agents such as ethanol and urea were used, at a pH value of 12, isotropic growth of ZnO spheres was developed, while at pH value less than 12, anisotropic growth of ZnO structures was observed. Furthermore, by modulating the volume ratio of ethanol in the solution, the size of the ZnO spheres could be controlled from nanometer to micrometer range.

引用

页码：51 / 55

页数：5

共 15 条

[1] CHARACTERISTIC ANALYSIS OF ZNO VARISTORS MADE WITH SPHERICAL PRECIPITATION POWDERS [J].

BAI, SN ;

SHIEH, JS ;

TSENG, TY .

MATERIALS CHEMISTRY AND PHYSICS, 1995, 41 (02) :104-109

[2] A new route toward ZnO hollow spheres by a base-erosion mechanism [J].

Chen, Zhitao ;

Gao, Lian .

CRYSTAL GROWTH & DESIGN, 2008, 8 (02) :460-464

[3] Facile synthesis of hollow silica microspheres [J].

Fowler, CE ;

Khushalani, D ;

Mann, S .

JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (08) :1968-1971

[4] Polymerized colloidal crystal hydrogel films as intelligent chemical sensing materials [J].

Holtz, JH ;

Asher, SA .

NATURE, 1997, 389 (6653) :829-832

[5] Morphology change of self-assembled ZnO 3D nanostructures with different pH in the simple hydrothermal process [J].

Jang, Jae-Min ;

Kim, Sung-Dai ;

Choe, Heeman ;

Kim, Jin-Yeol ;

Jung, Woo-Gwang .

MATERIALS CHEMISTRY AND PHYSICS, 2009, 113 (01) :389-394

[6]

Liu J., 2005, MATER LETT, V60, P1354

[7] A new approach to synthesize uniform metal oxide hollow nanospheres via controlled precipitation [J].

Qian, Haisheng ;

Lin, Guofeng ;

Zhang, Yunxia ;

Gunawan, Poernomo ;

Xu, Rong .

NANOTECHNOLOGY, 2007, 18 (35)

[8] Controlled synthesis and application of ZnO nanoparticles, nanorods and nanospheres in dye-sensitized solar cells [J].

Seow, Z. L. S. ;

Wong, A. S. W. ;

Thavasi, V. ;

Jose, R. ;

Ramakrishna, S. ;

Ho, G. W. .

NANOTECHNOLOGY, 2009, 20 (04)

[9] Two-stage dispersion polymerization toward monodisperse, controlled micrometer-sized copolymer particles [J].

Song, JS ;

Tronc, F ;

Winnik, MA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (21) :6562-6563

[10] PH effect on the morphology of ZnO nanostructures grown with aqueous chemical growth [J].

Vernardou, D. ;

Kenanakis, G. ;

Couris, S. ;

Koudoumas, E. ;

Kymakis, E. ;

Katsarakis, N. .

THIN SOLID FILMS, 2007, 515 (24) :8764-8767

← 1 2 →