Synthesis of Novel SnO2 Quantum Cubes and Their Selfassembly

武汉理工大学学报-材料科学版(英文版), 2011, 26(2): 270-273. doi: 10.1007/s11595-011-0211-7

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7,

1.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

2.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

3.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

4.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

5.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

6.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

7.Center of,Analysis and Measurement of Zhejiang University, Hangzhou 310027, China

基金项目: the Zhejiang Provincial Natural Science Foundation of China(ZA080021) the PCSIRT,the National Natural Science Foundation of China(50532030;50625206)

Synthesis of Novel SnO2 Quantum Cubes and Their Selfassembly

YU Zhongping ^1, , YE Bo ^2, , LIU Bo ^3, , FAN Xianping ^4, , QIAN Guodong ^5, , WANG Zhiyu ^6, , WANG Hua ^7,

1.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

2.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

3.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

4.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

5.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

6.State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

7.Center of,Analysis and Measurement of Zhejiang University, Hangzhou 310027, China

Keywords： nanocube

Nano-structured cubic SnO2 crystalines were successfully synthesized through solvothermal route. The obtained products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high resolution TEM (HRTEM). The study showed that, the SnO2particles were mtile structured and almost uniformly cube shaped crystals in quantum size (3-8 nm).Self-assembly behavior of the cubic SnO2 quantum dots was also observed. The synthesis process can be defined as an nonhydrolysis (NH) hydroxylation reaction provided by the amide elimination of earboxylated precursors. The formation of cubic morphology of SnO2 can be ascribed to the mild reaction featured by high nucleation rate and low growth rate, surface energy difference of the crystallographic facets of SnO2 and the passivation effect of the starting material-dodecylamine which drastically reduced the dipole interation. The selfassembly of the cubic SnO2 quantum dots was driven by van der Waals force and capillary force.

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Synthesis of Novel SnO2 Quantum Cubes and Their Selfassembly

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