The Photocatalytic Degradation of Methylene Blue Using Bismuth Vanadate (Bi₂VO_5.5) Powder

Abstract

Bismuth vanadate (Bi2VO5.5) powder has been successfully prepared by microwave method. Bismuth nitrate and ammonium vanadate were used as the starting precursors with the mole ratio of 2:1 in 2-propanol. The microwave power was 500 Watt for 2-6 min. The yellow powder was obtained and calcined at 500°C for 2h. The structure was identified by X-ray diffraction (XRD). The morphology was investigated by scanning electron microscopy (SEM). The chemical composition was determined by energy dispersive X-ray spectrometry (EDXS). The functional groups were investigated by fourier transform infrared spectrometry (FTIR) The photocatalytic degradation of methylene blue (MB) using Bi2VO5.5 powder was studied by ultraviolet-visible spectrophotometry (UV-Vis).

Mechanochemical Synthesis of Bi2VO5.5 for Improved Photocatalytic Dye Degradation

“…[1,2] At the present time efficient, eco-friendly, and and Bi 2 VO 5.5 possess layered structure which greatly assists in charge carrier transportation and thus demonstrate excellent catalytic activity over wide visible light response. [1] Bi 2 VO 5.5 (BiV) is a photocatalyst that shows ferroelectric properties below 725 K. [12][13][14] It is utilized in a variety of applications like electrode materials for lithium-ion batteries, solidstate electrolytes, and gas sensors. [15] BiV can be synthesized through various approaches like co-precipitation, solid-state reaction, microwave, and sol-gel.…”

“…Bi 2 VO 5.5 (BiV) is a photocatalyst that shows ferroelectric properties below 725 K. [ 12 , 13 , 14 ] It is utilized in a variety of applications like electrode materials for lithium‐ion batteries, solid‐state electrolytes, and gas sensors. [ 15 ] BiV can be synthesized through various approaches like co‐precipitation, solid‐state reaction, microwave, and sol‐gel.…”

“…[ 15 ] BiV can be synthesized through various approaches like co‐precipitation, solid‐state reaction, microwave, and sol‐gel. [ 12 , 13 , 16 ] It is evident that catalytic dye degradation efficiency counts on powder surface area as well as particle size. Most methods of synthesizing BiV produce a small surface area with a large particle size owing to the lower solubility of BiV in an aqueous solution or high calcination temperature.…”

“…al reported photocatalytic MB dye degradation of Bi 2 VO 5.5 powder prepared through the microwave method. [ 12 ] Mechanochemical ball milling (MBM) is a unique method to yield reduced‐sized particles. The mechanochemical approach comprises pulverizing and chemical reactions during vigorous milling as a result of high‐energy collisions between the reactant particles and the grinding media.…”