Enhanced photocatalytic activity of beryllium doped titania in visible light on the degradation of methyl orange dye

Abstract

The present work is focused on the synthesis of beryllium doped titania (Be+2–TiO2) at different percentages (0.25, 0.5, 0.75 and 1.0 wt.%) by the sol-gel method and its characterization using X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform-Infra red and Ultra violet-visible absorption spectroscopic methods. Diffraction peaks of anatase crystalline phase were present in both synthesized TiO2 and Be+2–TiO2. The presence of Be+2 ion in the TiO2 structure caused a significant absorption shift towards the visible region and its presence was confirmed by X-ray photoelectron spectroscopy and Fourier Transform-Infra Red data. The photocatalytic efficiency of the synthesized Be+2–TiO2 and pure TiO2 was evaluated by the degradation of aqueous methyl orange dye under visible light irradiation, where the degradation rate of methyl orange by Be+2–TiO2 was found to be higher than by pure TiO2. This can be attributed to more efficient electron–hole creation in Be+2–TiO2 in visible light and the electrons produced due to photosensitization of the dye can be scavenged by photoexcited doped TiO2 in visible light.

Preparation of TiO2-based catalysts with supercritical fluid technology: characterization and photocatalytic activity in CO2reduction

“…35,38 wileyonlinelibrary.com/jctb It should be noted that the absence of rutile phase in synthesized catalysts also means that the calcination to remove all organic wastes is conducted at an appropriate temperature to avoid phase change. 48 This result is highly important since anatase is inherently more photoactive than rutile due to both solid state properties (better response to light absorption and charge transport) and surface properties (better response to charge trapping and transfer and superior chemical response to the adsorbates involved in electron transfer reactions). 38 Another characteristic parameter of the catalysts is crystallite size (D), usually interpreted as indicative of the particle crystalline quality.…”

Photocatalytic Degradation of Allura Red by Mn-Ni co-doped Nanotitania under Visible Light Irradiation

“…By using sol-gel technique Manganese and Nickel co-doped nanotitania was prepared [20][21]. In this procedure n-Butyl orthotitanate (20mL) was added to 40 ml of ethanol and acidified with 3.2 ml of HNO 3 taken in a 150 ml pyrex glass measuring beaker (Solution-A) and then stirred for 15min.…”

Study on Structural and Optical Properties of Ni and Mn Codoped TiO2 Nanomaterials and Its Application in Visible Light Photocatalytic Activity of Indigo Caramine Dye

“…Manganese and nickel co-doped nano titania were synthesized by solgel method [15,16]. In this process n-Butyl ortho titanate (20 mL) was added to 40 mL of ethanol and acidified with 3.2 mL of nitric acid taken in a 150 mL pyrex glass beaker (solution-A) and stirred for 15 min.…”

“…The morphology and particle size of the catalyst play very important role in its photocatalytic activity [15] and were examined by the SEM. Fig.…”