In this research Bi2O3 was doped with mixtures of 8, 10, 12 and 18 mol % of Y2O3 and Yb2O3 to stabilizing the δ-Bi2O3 phase using solid state reaction technique. Experimental samples were fabricated by isostatic pressing and sintering at 850 °C for 24 h. X-ray diffraction analysis detected cubic phase (δ-Bi2O3) as the sole stable crystalline phase in samples including 12 and 18 mol % of Y2O3 an...

Bismuth oxide (Bi2O3) nanorods was prepared via one pot sol-gel method using Bi(NO3)3.5H2O and starch (as template) in water under hydrothermal condition followed by calcination at 320˚C within 3 h. The resultant solid product was characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetry (TGA), and FTIR techniques. Based on the obtained results, the formatio...

Bismuth oxide (Bi2O3) has received great attention as the promising battery-type anode due to its high theoretical capacity and wide operating voltage window, yet slow reaction kinetics poor cyclability are major obstacles affecting performance of energy storage devices. Herein, by employing bismuth-based metal-organic framework (MOF) CAU-17 both template precursor, Bi-Bi2O3 nanoparticles encap...

The simultaneous esterification and transesterification of Jatropha curcas oil (JCO) was carried out in the presence of Bi2O3 (1–7 wt.%) modified La2O3 catalyst at atmospheric pressure. The catalyst were characterized by X-ray diffraction (XRD), BET surface area, desorption of CO2 (TPD-CO2) and NH3 (TPD-NH3). Under the optimal reaction condition of methanol/oil molar ratio of 15:1, 2 wt.% of ca...

This study reports on experiments where bismuth sesquioxide (Bi2O3) was cycled between its high-temperature d-phase and one or more of its low-temperature phases (a-, b-, or g-Bi2O3) while being subjected to uniaxial tensile stresses in the range of 0.11–0.55 MPa. Reproducible strain increments of 0.4%–3.9% have been measured after each thermal cycle, and total tensile fracture strains of 10%–2...

A lithium bismuth borate glass system is prepared by the conventional melt quenching technique. The Powder X-Ray diffraction analysis of the prepared samples confirms the amorphous nature of the samples. The density and molar volume studies report the change of structure with the increase of bismuth content. The FTIR analysis of the samples revealed that the network structure of the prepared sa...

Bismuth oxide (Bi2O3) is an important component of several ferroelectric, 1 multiferroic 2,3 and superconducting oxide materials. 4 It has also received much interest due to its use as an ion conducting electrolyte material in solid oxide fuel cells, 5 an electrode material in discriminating gas sensors 6 and as an effective UV light photocatalyst. 7,8 There are a number of distinct crystallogr...

In recent years, ZnO nanomaterials have achieved great performance in solar energy applications. How to synthesize a nanocomposite structure with high photoelectric conversion efficiency has become an urgent problem solved. this paper, narrow band gap bismuth trioxide (Bi2O3) coated on nanoarray by magnetron sputtering was used prepare composite heterojunction ZnO/Bi2O3. Studies found that ZnO/...

Bismuth oxide thin films were obtained by the spray pyrolysis method using bismuth acetate as the precursor salt. The films were characterized by X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), UV-vis diffuse reflectance, X-ray Photoelectron Spectroscopy (XPS) and Scanning Electron Microscopy (SEM). The XRD patterns indicated that the pure β phase is obtained at 450 °C and was also ...

Ti-doped ZnO (TZO) and Bi2O3 thin films were designed deposited by magnetron sputtering successively on ITO glass substrate to form a ZnO/Bi2O3 (TZO/Bi2O3) heterojunction. Microstructure photoelectric properties of TZO, Bi2O3, TZO/Bi2O3 tested characterized. The results showed that TZO film with hexagonal wurtzite structure was preferentially grown along the crystal plane (002), had good crysta...