J. Mater. Sci. Technol. ›› 2015, Vol. 31 ›› Issue (2): 223-228.DOI: 10.1016/j.jmst.2014.04.002

• Orginal Article • Previous Articles     Next Articles

Growth Mechanism, Modified Morphology and Optical Properties of Coral-like BaTiO3 Architecture through CTAB Assisted Synthesis

Pengjun Zhao1, 2, Lei Wang1, Liang Bian1, Jinbao Xu1, Aimin Chang1, Xinqian Xiong1, 2, Fanglong Xu1, 2, Jiaqi Zhang1, 2   

  1. 1 Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry of CAS, Urumqi 830011, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-09-21 Online:2015-02-20 Published:2015-07-23
  • Contact: Corresponding author. Prof., Ph.D.; Tel.: +86 15099668125.
  • Supported by:
    This work was financially supported by the One Hundred Talents Project Foundation Program (1029271301), the Western Light Talent Culture Project (Grant No. RCPY201206) of Chinese Academy of Sciences, the National Natural Science Foundation of China (Grant Nos. 41302029 and 41130746) and the International Technology Cooperation Foundation of Autonomous Region (20136009).

Abstract: Three-dimensional hierarchical structure coral-like BaTiO3 nanoparticles have been self-assembled by a facile one step hydrothermal method. Cetyltrimethyl ammonium bromide (CTAB), Ba(OH)2·8H2O and tetrabutyl titanate have been used as precursors. The prepared BaTiO3 exhibits cubic perovskite phase at room temperature, and the coral-like architecture is a micro-nano hiberarchy consisted of dendrimer-like structure and trunk-like structure. By adjusting the hydrothermal duration and the precursor substances, a surfactant induced mechanism is proposed to understand the self-assembly process. UV-vis measurement demonstrates that the as-prepared BaTiO3 nanoparticles exhibit dozens of times overwhelming absorptive character compared to the ordinary nanospheres at ultraviolet band, which is benefited from the coral-like porous framework. Moreover, halogen anions( F-, Cl-, Br-, and I-) have been chosen to adjust the coral-like BaTiO3 physical properties. Results show the halogen doping produces distinct modulation effect on the grain size, UV-vis absorbance and photoluminescence properties of the materials. The coral-like BaTiO3 nanoparticle and its halogen modified ramifications offer significant opportunities to develop nano-laser devices, photon detectors, photocatalyst based on BaTiO3 perovskite materials.

Key words: BaTiO3, Halogen doping, Hydrothermal synthesis, Coral-like, Cetyltrimethyl ammonium bromide (CTAB), Optical properties