The synthesis of superhydrophobic Bi₂S₃complex nanostructures

Abstract

In this paper, we report a biomolecule-assisted soft chemistry route for constructing complex Bi(2)S(3) nanostructures that exhibit controlled wetting behavior. The as-synthesized sample was characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), field emission SEM (FE-SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), Fourier transform infrared (FT-IR), Raman, x-ray photoelectron (XPS) and photoluminescence (PL). The Raman spectra indicate that the surface optical (SO) phonon mode occurs in Bi(2)S(3) nanoparticles. The SO phonon mode is attributed to the defects on the surface of Bi(2)S(3) nanoparticles. In addition, the possible formation mechanism of the self-assembled urchin-like Bi(2)S(3) complex nanostructures is discussed. The established complex nanostructure can control the surface topology of a membrane to create a superhydrophobic surface. A water contact angle (CA) of > 150 degrees of the as-synthesized Bi(2)S(3) complex nanostructures can be obtained, which may find potential application in environmental chemistry.

Physical properties of chalcogenide Sn–Bi–S graded thin films annealed in argon

“…7b. This indicated the presence of Bi 2 S 3 , SnS, and Sn 2 S 3 phases through the Raman bands at 107, 218, and 307 cm -1 , respectively [22][23][24][25], confirming the results of the XRD analysis.…”

Robust scalable synthesis of surfactant-free thermoelectric metal chalcogenide nanostructures

“…The good agreement with the literature values supports the high purity of our metal chalcogenide nanostructures. [49][50][51][52][53][54][55][56][57] The size and morphology of the metal chalcogenide nanostructures are characterized by TEM in Figure 3. The particle size distribution of each sample, counted from 200 particles, is presented in Figure S5.…”

Preparation and Characterization of SnS:Bi Thin Films

“…In Table 1 are listed the crystalline structures and phases identified in the studied SnS:Bi compounds; the values for the corresponding lattice constants are also shown, which are in very close agreement with the data reported in JCPDS cards (# 039-0354 for SnS, # 014-0619 for Sn 2 S 3 , # 023-0677 for SnS 2 and # 017-0320 for Bi 2 S 3 ). It was found that the SnS films (x = 0) grow in the orthorhombic phase, while the films synthesized by sulfurization of a Sn and Bi (x = 0.3, x = 0.5, and x = 0.7) grow with a mixture of several phases it is one member of the metal chalcogenides group A V 2 B V I 3 , which begins to be widely studied because of their physical and chemical properties, suitable for the development of solar cells, luminescent devices, pigments, IR detectors, and thermoelectric devices [7,8].…”