Phattranit Dumrongrojthanath

Hydrothermal synthesis, characterization, and visible light-driven photocatalytic properties of Bi 2 WO 6 nanoplates

In this research, the effects on reaction temperature and length of time on Bi2WO6 nanoplates by hydrothermal synthesis on morphologies and photocatalytic properties were studied. The products obtained at different reaction temperature and reaction time were characterized by XRD, Raman, FTIR, SEM, and TEM techniques. The photocatalytic properties of the samples were measured by decomposing the rhodamine-B organic dye. XRD pattern was specified as pure orthorhombic well-crystallized Bi2WO6 phase for the 180°C and 20 h synthesis. Its FTIR spectrum shows main absorption bands at 400-1000 cm-1, assigned to Bi-O stretching, WO stretching, and W-O-W bridging stretching modes. SEM and TEM analyses show that the product was composed of nanoplates. Photocatalytic activity of Bi2WO6 nanoplates shows the 98.24% degradation of rhodamine-B under the Xe light irradiation within 100 min.

Hydrothermal Synthesis, Characterization, and Optical Properties of Ce Doped Bi2MoO6 Nanoplates

Undoped and Ce doped Bi2MoO6 samples were synthesized by hydrothermal reaction at 180°C for 20 h. Phase, morphology, atomic vibration, and optical properties were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectrophotometry, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and UV-visible spectroscopy. In this research, the products were orthorhombic Bi2MoO6 nanoplates with the growth direction along the [0b0], including the asymmetric and symmetric stretching and bending modes of Bi–O and Mo–O. Undoped and Ce doped Bi2MoO6 samples show a strong absorption in the UV region.

Hydrothermal synthesis of bi 2 moo 6 visible-light-driven photocatalyst

Bismuth molybdate (Bi2MoO6) nanoplates were synthesized by the hydrothermal reaction of bismuth nitrate and sodium molybdate as starting materials at 120-180°C for 5-20 h. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, and scanning electron microscopy (SEM) were used to investigate the effect of reaction temperature and length of reaction time on phase and morphologies of the as-synthesized Bi2MoO6 samples. In this research, orthorhombic wellcrystallized Bi2MoO6 nanoplates with the presence of stretching and bending vibrations of MoO6 and BiO6 octahedrons were detected, and the Bi2MoO6 nanoplates synthesized at 180°C for 5 h exhibit the highest photocatalytic efficiency over 96% within 100 min visible-light irradiation.

Ag3PO4/Bi2MoO6 heterostructures with enhanced visible light photocatalytic activity for the degradation of rhodamine B

Highly efficient visible-light-driven Ag3PO4/Bi2MoO6 hybrid photocatalysts with different mole ratios of Ag3PO4 were prepared via sonochemical method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that product are cubic Ag3PO4 nanoparticles supported on orthorhombic Bi2MoO6 nanoplates. Under visible light irradiation (>420 nm), the Ag3PO4/Bi2MoO6 photocatalysts displayed the higher photocatalytic activity than pure Bi2MoO6 for the decolorization of rhodamine B (RhB). Among the hybrid photocatalysts, 10% Ag3PO4/Bi2MoO6 exhibited the highest photocatalytic activity for the decolorization of RhB due to the efficient separation of electron–hole pairs.

Hydrothermal synthesis, structure, and optical properties of pure and silver-doped Bi2MoO6 nanoplates

The effect of Ag doping on Bi2MoO6 was studied in this research. Ag-doped Bi2MoO6 nanoplates were synthesized by a hydrothermal method at 180°C for 20 h. X-ray powder diffraction (XRD) and selected area electron diffraction (SAED) confirm that the products have orthorhombic Bi2MoO6 structure. Bi2MoO6 nanoplates were detected by transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) shows peaks with binding energies of 368.84 and 374.87 eV which could be attributed to Ag 3d5/2 and Ag 3d3/2, confirming that Ag is present in the Bi2MoO6 matrix. Raman and FTIR spectra show the vibration of asymmetric and symmetric stretching and bending modes of MoO6 octahedrons. The optical properties of products were characterized by UV–Vis spectroscopy. They show strong absorption in UV–Vis region.

Hydrothermal synthesis, characterization, and optical properties of Ce doped Bi 2 MoO 6 nanoplates

Undoped and Ce doped Bi2MoO6 samples were synthesized by hydrothermal reaction at 180°C for 20 h. Phase, morphology, atomic vibration, and optical properties were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectrophotometry, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and UV-visible spectroscopy. In this research, the products were orthorhombic Bi2MoO6 nanoplates with the growth direction along the [0b0], including the asymmetric and symmetric stretching and bending modes of Bi–O and Mo–O. Undoped and Ce doped Bi2MoO6 samples show a strong absorption in the UV region.

Facile deposition of Ag 3 PO 4 nanoparticles on Bi 2 MoO 6 nanoplates by microwave for highly efficient photocatalysis

A simple microwave method has been successfully developed to effectively produce Ag3PO4/Bi2MoO6 nanocomposites. X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) have been employed to determine the phase and morphology of the as-produced products. The photocatalytic activities were tested through the rhodamine B (RhB) degradation under visiblelight radiation. The interaction between cubic Ag3PO4 nanoparticles and orthorhombic Bi2MoO6 nanoplates has been characterized by XRD and TEM. In this research, the as-produced heterostructure Ag3PO4/Bi2MoO6 nanocomposites display effective photogenerated charge transfer between Ag3PO4 and Bi2MoO6 which can improve charge separation. The 10.0 wt % Ag3PO4/Bi2MoO6 nanocomposites showed the highest photocatalytic performance as high as 4.36 times of the pure Bi2MoO6 sample.

Hydrothermal Synthesis, Characterization, and Optical Properties of Ce Doped Bi2MoO6Nanoplates

Undoped and Ce doped Bi2MoO6 samples were synthesized by hydrothermal reaction at 180°C for 20 h. Phase, morphology, atomic vibration, and optical properties were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectrophotometry, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and UV-visible spectroscopy. In this research, the products were orthorhombic Bi2MoO6 nanoplates with the growth direction along the [0b0], including the asymmetric and symmetric stretching and bending modes of Bi–O and Mo–O. Undoped and Ce doped Bi2MoO6 samples show a strong absorption in the UV region.