Solution-Phase Synthesis and High Photocatalytic Activity of Wurtzite ZnSe Ultrathin Nanobelts: A General Route to 1D Semiconductor Nanostructured Materials

Hefei National Laboratory for Physical Sciences at Microscale and the Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Chemistry (Impact Factor: 5.73). 09/2007; 13(28):7926-7932. DOI: 10.1002/chem.200700334
Source: PubMed


A general and facile synthetic route has been developed to prepare 1D semiconductor nanomaterials in a binary solution of distilled water and ethanol amine. The influence of the volume ratio of mixed solvents and reaction temperature on the yield and final morphology of products was investigated. Significantly, this is the first time that wurtzite ZnSe ultrathin nanobelts have been synthesized in solution. It has been confirmed that the photocatalytic activity of ZnSe nanobelts in the photodegradation of the fuchsine acid is higher than that of TiO(2) nanoparticles. The present work shows that the solvothermal route is facile, cheap, and versatile. Thus, it is very easy to realize scaled-up production, and brings new light on the synthesis and self-assembly of functional materials.

Download full-text


Available from: Chengming Wang, Oct 31, 2014
29 Reads
  • Source
    • "prepared by a hydrothermal method at 220 1C for 24 h were reported to exert efficient photocatalytic activity for fuchsine acid [29]. Here, we report flower-like ZnSe microspheres with two different (cubic and hexagonal) crystal structures prepared by a hydrothermal method. "
    [Show abstract] [Hide abstract]
    ABSTRACT: We O-center dot(2)- synthesized ZnSe as well as Er and Yb-doped ZnSe nano-assembled microspheres by a hydrothermal method with and without hydrazine. ZnSe microspheres with a cubic phase were obtained with hydrazine, while ZnSe microspheres showed mixed cubic and hexagonal phases when hydrazine was not used. Introduction of low levels of Yb and Er resulted in morphologies of plates and rods, respectively, and these morphologies were unchanged when higher doping concentrations were used. The synthesized ZnSe was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction crystallography, thermogravimetric analysis, UV-visible absorption, and photoluminescence spectroscopy. Photodegradation of methyl orange by undoped, Er and Yb-doped ZnSe was tested under visible light. Photoluminescence spectroscopy using terephthalic acid confirmed that OH radicals were efficiently formed over the doped ZnSe nanostructures upon visible light irradiation.
    Ceramics International 12/2014; 40(10):16051-16059. DOI:10.1016/j.ceramint.2014.07.141 · 2.61 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, we provide normal forms and truth tables for interval-valued fuzzy logic which are analogous to those for classical logic, i.e. analogous to the disjunctive and conjunctive normal forms and truth tables for Boolean algebras. We give an algorithm for rewriting an expression to obtain its disjunctive normal form. We also give an algorithm for obtaining the disjunctive normal form of an expression from its table of truth values
    IFSA World Congress and 20th NAFIPS International Conference, 2001. Joint 9th; 08/2001
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Cu-doped ZnSe single-crystal one-dimensional (1-D) nanostructures were fabricated via thermal treatment of the as-synthesized corresponding precursor, which was prepared through a ternary solution-based method. The evident phase transformation suggests that doping with Cu2+ favors the formation of the cubic phase ZnSe. The as-prepared products were characterized using diverse techniques (X-ray powder diffraction, high-resolution transmission electron microscopy, and selected area electron diffraction), which demonstrate that both the sphalerite cubic phase and the wurtzite hexagonal phase coexist in nanowires obtained from ZnSe doped with different amounts of Cu2+.
    The Journal of Physical Chemistry C 03/2008; 112(14):5333–5338. DOI:10.1021/jp710764m · 4.77 Impact Factor
Show more