Bi2s3 Nanowires: First-Principles Phonon Dynamics And Their Photocatalytic Environmental Remediation

We reported the synthesis and full characterization of ultralong Bi2S3 nanowires with diameters of 60-80 nm and lengths above 1 mu m, showing growth in the [001] direction. Combining the computed lattice dynamics of orthorhombic Bi2S3 with the experimental micro-Raman scattering study provided comprehensive solutions. We demonstrate that 10 active modes originated from Raman symmetry modes (4A(g) + 2B(1g) + 3B(2g) + 1B(3g)), and the peak at 124 cm(-1) is due to the IR-active B-3u mode. The use of the Bi2S3 catalyst for dewatering hexavalent chromium-containing wastewater was also reported. This confirms it to be a potential candidate for photocatalytic environmental remediation.