Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (12): 2523.doi: 10.7503/cjcu20140649

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Solution-phase Synthesis and Morphology-controlled Mechanism of Flower-like Indium Sulfide Hierarchitectures

QI Kezhen1,*(), WANG Yan1, FU Jiaqi2, Rengaraj Selvaraj3, WANG Guichang4,*()   

  1. 1. College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China
    2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
    3. Department of Chemistry, College of Science, Sultan Qaboos University, Muscat 123, Sultanate of Oman
    4. College of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2014-07-14 Online:2014-12-10 Published:2014-11-29
  • Contact: QI Kezhen,WANG Guichang E-mail:qikezhen2003@gmail.com;wangguichang@nankai.edu.cn
  • Supported by:
    † Supported by the Research Fund for Young Scholars of Shenyang Normal University, China(No.054-55440109035).

Abstract:

Flower-like In2S3 hierarchical nanostructures were successfully prepared via a facile solution-phase route, using In(NO3)3 as processor and C2H5NS as sulfur source. Our experimental results demonstrated that the morphology of the product can be easily modified by tuning the precursor ratio. The molar ratio of In(NO3)3/C2H5NS plays a crucial role in the morphology of In2S3 hierarchitectures. With the ratio increasing from 1:1.5 to 1:6, the flower-like In2S3 crystals exhibited various morphologies and different sizes. X-ray diffraction(XRD) patterns of the flowers revealed the cubic structure of In2S3; morphological studies examined by scanning electron microscope(SEM) and transmission electron microscope(TEM) showed that the synthesized In2S3 nanostructure was flower-like hierarchitecture assembled by nanoflakes. Density functional theory(DFT) calculation results indicate that the adsorption of C2H5NS can affectively and selectively reduce the surface energy of In2S3 facet, stabilize the corresponding crystal facet. The results indicate that there is a synergistic effect between C2H5NS protecting the crystal facet and the nucleation rate for C2H5NS to tune the growth of In2S3 nanoplates. Therefore, the morphology of flower-like In2S3 crystals can be controlled by adjusting the C2H5NS concentration in the mixed solvent.

Key words: In2S3 nanoflowers, Solution-based synthesis, Density functional theory, Surface energy, Morpho-logy control

CLC Number: 

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