Hydrazine and Urea Fueled-Solution Combustion Method for Bi2O3 Synthesis: Characterization of Physicochemical Properties and Photocatalytic Activity

Abstract

Bismuth oxide synthesis using solution combustion method fuelled by hydrazine and urea has been conducted. This study aims to examine the effect of the applied fuels, urea and hydrazine, on product characteristics and photocatalytic activity in degrading rhodamine B dye. Bismuth oxide synthesis was initiated by dissolving bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) in a nitric acid solvent. Fuel was added and then stirred. The solution formed was heated at 300 ºC for 8 hours. The product obtained was then calcined at 700 ºC for 4 hours. Bismuth oxide synthesized with urea (BO1) and hydrazine (BO2) as fuels both obtained form of yellow powder. The formation of bismuth oxide is indicated by the vibrations of the Bi–O–Bi and Bi–O groups and the crystal structure of a-Bi2O3 in both products. Photocatalytic activity test showed that BO1 has a photocatalyst activity in degrading rhodamine B higher than that of BO2 with constant values of 3.83×10-5 s-1 and 3.43×10-5 s-1, respectively. The high photocatalytic activity can be examined through several factors, such as: band gap values, crystal structure, morphology, and surface area, acquired as a result of the use of different fuels in the synthesis process. Copyright © 2020 BCREC Group. All rights reserved

Bismuth Oxide Prepared by Sol-Gel Method: Variation of Physicochemical Characteristics and Photocatalytic Activity Due to Difference in Calcination Temperature

“…These results are also confirmed by the pure bismuth FTIR spectrum in Fig. 3(a) showing similar absorption patterns at wavenumbers around 840 and 1384 cm -1 [12].…”

“…The photocatalytic activity of synthesized bismuth oxide on MO dyes can be determined using decolorization rate calculations through chemical kinetics studies. Generally, the decolorization activity of dyes follows the kinetics of first-order reactions [8,12,[30][31][32] expressed by the formula:…”

“…Bismuth oxide (Bi2O3) can be synthesized by several methods, including precipitation [8] or deposition [9], solution combustion [10][11][12], hydrothermal [13], and solgel methods [1]. In this study the sol-gel (SG) method was applied with variations in calcination temperatures of 500, 600, and 700 °C.…”

French Fries-Like Bismuth Oxide: Physicochemical Properties, Electrical Conductivity and Photocatalytic Activity

“…Synthesis of bismuth oxide can be conducted by several methods including precipitation [5,11], sol-gel [6], solution combustion [4,12,13] and hydrothermal [14][15][16][17]. In this study, the hydrothermal method was applied to produce bismuth oxide since it has several advantages, such as: precipitant-free, additive-free, no need sophisticated equipment, and low temperature processing, which lead to energy saving and cost effective [14][15][16][17][18].…”

“…Bismuth oxide is a potential material for a photocatalyst and has been applied to degrade dye molecules, such as methyl orange, remazol black B (RBB) and rhodamine B (RhB) [4,13,20,21]. Industries, such as printing, textiles, cosmetics and papers, are inseparable from the use of dyes, especially synthetic dyes [22,23].…”