Akademik Veri Yönetim Sistemi
Ceramics International, cilt.51, sa.14, ss.19579-19588, 2025 (SCI-Expanded, Scopus)
In this study, we report the synthesis and optimization of bismuth tungstate (Bi₂WO₆) via hydrothermal methods, with the use of surfactants cetyltrimethylammonium bromide (CTAB) and polyethylene glycol (PEG 400). The goal was to enhance the photochromic properties of the material, which were investigated under varying amounts of surfactants (20 mg, 50 mg, 100 mg, 150 mg, and 200 mg). The synthesized Bi₂WO₆ samples were characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), X-Ray Photoelectron Spectroscopy (XPS), High Resolution Transmission Electron Microscopy (HR-TEM) and UV–Vis diffuse reflectance spectroscopy (UV-DRS). Photochromic color measurements were performed to evaluate the color change from yellow to blue upon exposure to sunlight and Xe-lamp irradiation. The results indicate that the optimal concentrations of CTAB and PEG 400 were 150 mg and 50 mg, respectively, producing the most significant color change. The study provides insight into the role of surfactant concentration in controlling the photochromic behavior of Bi₂WO₆, contributing to its potential applications in smart materials and photo-responsive devices.