Biomineralization and superhydrophobicity of BaCO3 complex nanostructures.
In this paper, we report on biomineralization of BaCO(3) hierarchical architectures with self-cleaning ability. The phase structures of the obtained samples were characterized by X-ray diffraction (XRD). All of these complex nanostructures, including dendrite-like nanostructures, dumbbell-like nanostructures, and spherical nanostructures of BaCO(3), were obtained by tuning the experimental parameters, such as the concentration of glucosan and Ba(2+) cations. The morphology and structures were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution TEM (HRTEM), and Fourier transform infrared (FT-IR) spectrum. The formation of dendrite-like, dumbbell-like, and spherical complex nanostructures can be explained by a rod-dumbbell-sphere (RDS) self-assembly growth mechanism. To our knowledge, this is the first demonstration of the biomimetic synthesis of BaCO(3) hierarchical architectures which uniquely display the characteristic of superhydrophobicity. A water contact angle of >150 degrees and sliding angle of 1 degree of the BaCO(3) hierarchical architectures can be adjusted, which opens up a wide range of new potential applications of bioinspired complex nanostructures in environmental chemistry.
Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.
Shuisheng
S
Wu
Huaqiang
H
Cao
Shuangfeng
S
Yin
Xinrong
X
Zhang
Victoria
V
Chernow
D001464:Barium / Q000737:chemistry*; D032701:Biomimetics; D002254:Carbonates / Q000138:chemical synthesis / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008954:Models, Biological; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000737:chemistry*
D002254:Carbonates; D014867:Water; D001464:Barium; C006685:barium carbonate