Sonochemical synthesis and characterization of uniform lanthanide orthophosphate (LnPO<inf>4</inf>, Ln = La and Ce) nanorods

• Main Authors: Phuruangrat A., Thongtem T., Thongtem S.
• Format: Article
• Published: University of Science and Technology Beijing 2015
• Subjects: Metals and Alloys; Materials Chemistry; Physical and Theoretical Chemistry; Condensed Matter Physics
• Online Access: http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84929521839&origin=inward; http://cmuir.cmu.ac.th/handle/6653943832/38963
• Institution: Chiang Mai University

© 2014, The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg. Uniform lanthanide orthophosphate (LnPO<inf>4</inf>, Ln = La and Ce) nanorods were successfully synthesized by a simple ultrasonic irradiation method using lanthanide nitrate salt (Ln(NO<inf>3</inf>)<inf>3</inf>·6H<inf>2</inf>O, Ln = La and Ce) and sodium phosphate (Na<inf>3</inf>PO<inf>4</inf>) in aqueous solutions with the pH of 1–3. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectrometer (FT-IR), and UV–visible (UV-Vis) spectroscopy. In this research, the products are nanorods of monoclinic LaPO<inf>4</inf> and hexagonal CePO<inf>4</inf> structures and the vibration modes of PO<inf>4</inf> ³⁻, including the strong peaks at 227 nm for LaPO<inf>4</inf>, and at 225 and 278 nm for CePO<inf>4</inf>.