The CHEMIN XRD/XRF instrument has shown promising results on a variety of mineral and rock samples. X-Ray Diffraction ( XRD) is the most direct and accurate method for determining mineralogy. Remote In-Situ Quantitative Mineralogical Analysis Using XRD/XRFīlake, D. Theresults indicate no significant changes to the composition and the purity of the WO3nanoparticle produced due to the temperature variations Finally, the composition and the purity of the WO3nanoparticleshave been examined by X-Ray photoelectron spectroscopy (XPS. The TG curve revealed that the WO3nanoparticles is purely anhydrous since the weight loss is insignificant (0.3 –1.4 % from 30 until 600Â☌ for the WO3nanoparticles calcined at 400Â☌. It is also found that the X-Ray diffraction measurements produced an average diameter of (30 ±5, (50 ±5, (150 Â☑0 and (200 Â☑0 nm at calcination temperatures of 400, 500, 600 and 700Â☌ respectively by using Debye-Scherrer formula. No diffraction peaks were found in the X-Ray diffraction measurements for the sample heat treated at 300Â☌ (as-prepared, suggesting that an amorphous structure was obtained at this temperature whereas the crystallinity had been obtained by the other samples of theWO3nanoparticles at the calcination temperatures of 400, 500, 600 and 700Â☌. The result from XRD and DTA show that the formation of polymorphsWO3nanoparticles have the following sequence: orthorhombic (b-WO3®monoclinic (g-WO3 ®triclinic (d-WO3 ®monoclinic (e-WO3 with respect to the calcination temperature of 400, 500, 600 and 700Â☌. As a comparison, transmission electron microscope (TEM was used to investigate the size of the WO3nanoparticles. S tudies on the phase transitions and properties of tungsten (VI oxide nanoparticles by X - Ray diffraction ( XRD and thermal analysisĭirectory of Open Access Journals (Sweden)įull Text Available Tungsten (VI oxide, WO3nanoparticles were synthesized by colloidal gas aphrons(CGAs technique.The resultant WO3nanoparticleswere characterized by thermogravimetric-differential thermal analysis (TG-DTA and X-Ray diffraction ( XRD measurements in order to determine the phase transitions, the crystallinity and the size of theWO3nanoparticles. We are developing a novel sample handling system that dramatically relaxes the constraints on sample preparation by allowing characterization of coarse-grained material that would normally be impossible to analyze with conventional powder- XRD techniques. These operations require attention in a laboratory environment, but they become a major constraint in the deployment of XRD instruments for robotic planetary exploration. Sample preparation and sample handling are among the most critical operations associated with X-ray diffraction ( XRD) analysis. Novel Sample-handling Approach for XRD Analysis with Minimal Sample Preparation