Synthesis, Properties, and Photocatalytic Activity of Perovskite-Phase Ba0.75Sr0.25TiO3 Nanoceramics

Photocatalysis has long been studied for clean energy and environmental applications. Over the past two decades, the number of applications based on photocatalysis has increased sharply, while a wide range of materials systems have been developed [1–2]. TiO2-based materials are the most studied for photocatalytic applications, ternary and other complex oxide systems have been increasingly explored as photocatalysts. Among the various classes of materials studied, perovskites-based photocatalysts have unique photophysical properties and offer distinct advantages [3].An aqueous solution of barium and titanium was obtained by mixing 14.66 g Ba(NO3)2 in 40 ml deionized water and 2ml titanium tetraisopropoxide (TIP) in 4 ml glacial acetic acid. 14.66 g of Sr(NO3)2 solved in deionized water added to the above solution. Then powder calcination at 400°C for 2h. Ceramic was characterized by Energy dispersive X-ray analysis (EDX), FT-IR, SEM, UV-vis spectroscopy and X-ray diffraction (XRD). XRD analysis and SEM reveal pure perovskite phase structure and uniform grain size.Parameters such as concentration of substrate, amount of photocatalyst, pH of the solution, temperature of reaction medium and time of irradiation of light for photocatalysis degradation of methylene blue (MB) were investigated. Ceramic show the maximum adsorption at high pH hence the photodegradation also found maximum at high pH