Abstract
The Pb1−xNixBiO2Br (x = 0, 0.1, 0.2, 0.3, 0.4) semiconductor materials were synthesized via a hydrothermal method. The samples were characterized by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible diffuse reflection spectroscopy (UV–vis DRS) and photoluminescence (PL) spectroscopy. The results show that the Ni-doped PbBiO2Br samples are composed of flower-like nanosheets. Ni ions are confirmed to enter the PbBiO2Br lattice and do not cause the crystal structure changes of PbBiO2Br, basically maintaining the tetragonal structure. The absorption edge is shifted to higher wavelength, and the corresponding energy gap decreases from 2.49 eV for pristine PbBiO2Br to 2.30 eV for Ni-doped PbBiO2Br, and the gradual shift of the FTIR peaks toward lower frequency is observed of the Ni-doped PbBiO2Br. The PL absorption peaks shift toward the bluish-violet wavelength and their intensity gradually decreases with increasing the Ni content. These can be related to the creation of local defects and further confirm that Ni2+ ions are indeed included into the PbBiO2Br lattice. The synthesized Ni-doped PbBiO2Br nanosheets are expected to be more efficient photocatalytic materials
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
