- Conference date: 26–29 April 2012
- Location: Antalya, Turkey
The present work deals with the hydrothermal synthesis of a new polymorph form of neodymium orthoborate, . It was obtained by dissolving 0.1875g in 20 ml distilled water and later added to 1.8125 g and the mixture was transferred to a teflon autoclave. The hydrothermal reaction was performed at 230 °C for 72 h. Characterizations of the sample were carried out by using X-Ray Powder Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Thermal Analysis (DTA/TG) techniques. was crystallized in monoclinic system and unit cell parameters were calculated as a=11.726(1) Å, b= 6.759(2) Å, c= 9.909(4) Å, β= 114.50(0)°, and space group of C2/c. It was confirmed that was isostructural with the form of Er doped (a=11.3138(3) Å, b=6.5403(2) Å, c= 9.5499(2) Å and β= 112.902(1)°) at room temperature. The other significant invention of was thermally stable up to 700 °C, but if the specimen was heated at 780 °C for 4 h, the monoclinic crystal structure was transformed to the aragonite form of (ICDD 12-756).
- Fourier transform infrared spectroscopy
- X-ray diffraction
- Hydrogen reactions
Data & Media loading...
Article metrics loading...