Synthesis of Bismuth Oxide: Removal of benzene from waters by Bismuth Oxide Nanostructures

Masoumeh Yaqoubi,Negar Motakef Kazemi

doi:10.24200/amecj.v2.i04.79

Abstract

In this research, bismuth oxide (Bi2O3) nanostructures were prepared via chemical method at 90 °C for 3 h. the results samples were characterized by Fourier transform infrared (FTIR) for determination of functional groups, X-ray diffraction (XRD) for evaluation of crystal structure, dynamic light scattering (DLS), scanning electron microscope (SEM) for presentation of morphology and size, energy-dispersive X-ray spectroscopy (EDS) for determination of chemical composition, and diffuse reflection spectroscopy (DRS) for ultraviolet (UV) blocking. Also, the Bi2O3 nanostructures were used for benzene extraction from waters in pH=5-7. By procedure, 30 mg of Bi2O3 mixed with hydrophobic ionic liquid ([HMIM][PF6]) and injected to water samples. After shaking and centrifuging, benzene removed from water by ionic liquid-micro solid phase extraction (IL-μSPE) and determined by gas chromatography with flame ionization detector (GC-FID). The absorption capacity and recovery was obtained 167.8 mg per gram of Bi2O3 and more than 96%, respectively.

Highlights

Nanotechnology has attracted a great attention in very interesting applications in various fields [1, 2]
Synthesis of bismuth oxide nanostructures with the ratio of initial/final concentration of Bismuth oxide nanostructures were prepared via benzene before determined with chemical method based on schematic reaction as gas chromatography with flame ionization detector (GC-FID) (Equation EQ1)
The IL-μSPE procedure based on the bismuth oxide (Bi2O3) nanostructures was used for extraction of benzene in water and wastewater samples

Summary

Introduction

Nanotechnology has attracted a great attention in very interesting applications in various fields [1, 2]. Bismuth oxide nanostructures were synthesized by chemical method for application of UV blocking and antibacterial activity. The bismuth oxide (Bi2O3) nanostructures were used for benzene extraction from waters by IL-μSPE. Materials including bismuth nitrate (Bi(NO3)3), nitric acid (HNO3), and sodium hydroxide (NaOH) were purchased from Merck (Darmshtadt Germany). The antibacterial activity was evaluated using solution shacked for 5 min and after centrifuging disk diffusion method against Salmonella Gram- for 3 min (3500rpm), the upper solution (water or negative bacteria, strains ATCC 1231, procured standard solution) was determined by GC-FID. Synthesis of bismuth oxide nanostructures with the ratio of initial/final concentration of Bismuth oxide nanostructures were prepared via benzene (signal peak area) before determined with chemical method based on schematic reaction as GC-FID (Equation EQ1). In a vacuum oven at 80 °C for 5 h

Procedure

Findings

Optimizing and validation