ZnO nanostructures were prepared in aqueous solution by microwave hydrothermal synthesis. Xray
diffraction (XRD) and field emission scanning electron microscopy (FESEM) were used to characterize ZnO
nanostructures (ZNs). The effects of pH, reaction temperature and reaction time on yield of ZnO were investigated.
The yield of ZnO increased significantly with the increase of pH value, reaction temperature and reaction time.
High yield and well crystallinity of ZNs could be obtained at 120℃ for 60min by microwave hydrothermal
synthesis. The spherical and rugby-like ZNs were obtained at 120℃ without triethanolamine (TEA) and with
TEA (mass ratio, r = mZn2+ : mTEA = 1 : 1), respectively. The concentration of Zn(OH)2 4 ions in the reaction
solution and TEA had an important effect on the nucleation and morphology of ZnO nanostructures. Mechanism
for the formation of ZnO nanostructures was proposed.
GUO Li-tong1* (郭立童), WU Jing1 (武静), GUO Li-zhi2 (郭立芝),ZHU Ya-bo1 (朱亚波), XU Cheng1 (许程), QIANG Ying-huai1 (强颖怀)
. Microwave Hydrothermal Synthesis and Characterization of ZnO Nanostructures in Aqueous Solution[J]. Journal of Shanghai Jiaotong University(Science), 2012
, 17(6)
: 734
-737
.
DOI: 10.1007/s12204-012-1355-0
[1] Chen J J, Deng H, Wei M. Hydrothermal synthesis and optical properties of ZnO single-crystal hexagonal microtubes [J]. Materials Science and Engineering B, 2009, 163: 157-160.
[2] Thongtem T, Phuruangrat A, Thongtem S. Characterization of nanostructured ZnO produced by microwave irradiation [J]. Ceramics International, 2010, 36: 257-262.
[3] Chen J, Lei W, Chai W Q, et al. High field emission enhancement of ZnO-nanorods via hydrothermal synthesis [J]. Solid-State Electronics, 2008, 52: 294-298.
[4] Hu X L, Zhu Y J, Wang S W. Sonochemical and microwave-assisted synthesis of linked singlecrystalline ZnO rods [J]. Materials Chemistry and Physics, 2004, 88: 421-426.
[5] Wang B G, Callahan M J, Xu C C, et al. Hydrothermal growth and characterization of indiumdoped-conducting ZnO crystals [J]. Journal of Crystal Growth, 2007, 304: 73-79.
[6] Zhang Z Q, Mu J. Hydrothermal synthesis of ZnO nanobundles controlled by PEO-PPO-PEO block copolymers [J]. Journal of Colloid and Interface Science, 2007, 307: 79-82.
[7] Pal E, Hornok V, Oszk′o A, et al. Hydrothermal synthesis of prism-like and flower-like ZnO and indiumdoped ZnO structures [J]. Colloids and Surfaces A, 2009, 340: 1-9.
[8] Akhtar M S, Khan M A, Jeon M S, et al. Controlled synthesis of various ZnO nanostructured materials by capping agents-assisted hydrothermal method for dyesensitized solar cells [J]. Electrochimica Acta, 2008, 53: 7869-7874.
[9] Pei L Z, Zhao H S, Tan W, et al. Hydrothermal oxidization preparation of ZnO nanorods on zinc substrate [J]. Physica E, 2010, 42: 1333-1337.
[10] Krishnakumar T, Jayaprakash R, Pinna N, et al. CO gas sensing of ZnO nanostructures synthesized by an assisted microwave wet chemical route [J]. Sensors and Actuators B, 2009, 143: 198-204.
[11] Liu J S, Cao J M, Li Z Q, et al. A simple microwave-assisted decomposing route for synthesis of ZnO nanorods in the presence of PEG400 [J]. Materials Letters, 2007, 61: 4409-4411.
[12] Erten-Ela S, Cogal S, Icli S. Conventional and microwave-assisted synthesis of ZnO nanorods and effects of PEG400 as a surfactant on the morphology [J]. Inorganica Chimica Acta, 2009, 362: 1855-1858.
[13] Komarneni S, Katsuki H. Microwave-hydrothermal synthesis of barium titanate under stirring condition [J]. Ceramics International, 2010, 36: 1165-1169.
[14] Chen Z Q, Li W K, Zeng W J, et al. Microwave hydrothermal synthesis of nanocrystalline rutile [J]. Materials Letters, 2008, 62: 4343-4344.
[15] Krishna M, Komarneni S. Conventional- vs microwave-hydrothermal synthesis of tin oxide, SnO2 nanoparticles [J]. Ceramics International, 2009, 35: 3375-3379.
[16] Guo L T, Luo H J, Gao J Q, et al. Microwave hydrothermal synthesis of barium titanate powders [J]. Materials Letters, 2006, 60: 3011-3014.
