Synthesis of MgTiO₃ Nanoparticles for Photocatalytic Applications

Abstract

Magnesium titanate (MgTiO3) has been successfully synthesized via the sonochemical method by using TiO2 (P25) and Magnesium nitrate (MgNO3)2.6H2O as precursors without any additional phases such as MgTi2O5 and Mg2TiO4. The synthesized nanoparticles were well characterized by optical methods using UV‐Vis diffuse reflectance spectroscopy (DRS) and Photoluminescence spectroscopy (PL). The morphology of MgTiO3 nanoparticles is irregular in shape with serious agglomerations were confirmed through SEM analysis. XRD confirms crystal structure and phase purity of MgTiO3 nanoparticles calcined at 700 °C for 2 hours. The calculated band gap energy of MgTiO3 nanoparticles has been found to be 3.05 eV. Using the prepared MgTiO3 nanoparticles, the photocatalytic activities were evaluated by following the degradation of Congo red dye under visible light. Moreover, the influence of various scavengers on the photocatalytic reaction were studied.

In‐Situ Synthesis of Tetraphenylporphyrin/Tungsten (VI) Oxide/Reduced Graphene Oxide (TPP/WO3/RGO) Nanocomposite for Visible Light Photocatalytic Degradation of Acid Blue 25

“…Moreover, the band gaps of the composites ( Figure S3) also followed direct allowed transitions as well as for pristine WO 3 .…”

“…The highest band gap of 4.92 eV was observed for pristine WO 3 . The band gaps are summarized by table 1 and from Figure 9 it can be observed that the band gap of the composite degreased to 2.27 eV.…”

“…The increasing number of industries since the 21 st centuries has resulted in a wide range of environmental pollution in different planetary media such as the atmosphere, waters, and soils . The challenge is exacerbated by poor, inappropriate and insufficient effluent treatment at source . However, various reports based on different industries such as clothing textiles, pharmaceuticals, quality assurance laboratories, production industries, furniture and numerous others polluting the environment (water and air) with solid wastes, effluents and various synthetic dyes is of global concern .…”

“…[2,3] However, various reports based on different industries such as clothing textiles, pharmaceuticals, quality assurance laboratories, production industries, furniture and numerous others polluting the environment (water and air) with solid wastes, effluents and various synthetic dyes is of global concern. [3][4][5] Recent, researchers have focussed on the coloured wastewater discharged from textile, food and printing industries into the rivers without proper treatment which leads to detrimental effects to fresh water flora and fauna, environmental ecology and human health. [6] These industries may use acid dyes (when classified by use) and the conversional methods currently used in their treatment plants fail to remove these dyes from their wastewater discharges [7] resulting in coloured effluents.…”

“…The challenge is exacerbated by poor, inappropriate and insufficient effluent treatment at source . However, various reports based on different industries such as clothing textiles, pharmaceuticals, quality assurance laboratories, production industries, furniture and numerous others polluting the environment (water and air) with solid wastes, effluents and various synthetic dyes is of global concern . Recent, researchers have focussed on the coloured wastewater discharged from textile, food and printing industries into the rivers without proper treatment which leads to detrimental effects to fresh water flora and fauna, environmental ecology and human health .…”