Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (10): 2500-2506.doi: 10.3866/PKU.WHXB201209113

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles    

Bifilar Helix-Like Nanobelt of Single Crystalline Zn2SnO4 Fabricated by Aluminothermal Reaction Approach

WANG Yu1, CHEN Jing1, LIAO Qing2, SUN Wei1, LI Jianlong1, ZHANG Jianping3, WU Kai1   

  1. 1 Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China;
    2 Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.China;
    3 Department of Chemistry, ReminUnversity of China, Beijing 100872, P. R.China
  • Received:2012-08-28 Revised:2012-09-10 Published:2012-09-26
  • Supported by:

    The project was supported by the NationalNatural Science Foundation of China (20827002, 20911130229) and National Key Basic Research Program of China (973) (2009CB929403, 2011CB808702).

Abstract:

This paper reports the preparation in large quantity of bifilar helix-like nanobelts of single crystalline Zn2SnO4, a face-centered cubic spinel and transparent semiconductor that possesses wide applications in photovoltaic devices and sensors for humidity and combustible gases, by using a unique approach that combines chemical vapor deposition, aluminothermal reaction, vapor-liquid-solid growth, mergence of polar planes, and kinetic control by steady-state turbulent flow. The bifilar helix-like nanobelt was formed by the twisting and merging of two independent Zn2SnO4 nanobelts, as analyzed by scanning electron microscopy, transmission electron microscopy, electron diffraction, X-ray diffraction, Raman spectroscopy, and photoluminescence. It had a periodicity along the axial direction and hence, is actually a super-lattice material. The photoluminescence measurements showed a strong light emission at 326.1 nm from the as-prepared sample with a line width of about 1.5 nm. The combined approach used in this study, in particular its aluminothermal reaction and steady-state turbulent gas flow perturbation steps, may be helpful in preparing other similar materials.

Key words: Bifilar helix-like nanobelt, Zn2SnO4, Aluminothermal reaction approach, Photoluminescence

MSC2000: 

  • O641