SYNTHESIS AND CHARACTERIZATION OF NANOMATERIALS TbPO4.H2O CAPABLE OF EMITTING GREEN LIGHT

Abstract

The article presents the synthesis process of nanomaterial TbPO4.H2O, which can be used in
cancer cell identification. The raw materials include Tb(NO3)3.6H2O and NH4H2PO4 with a
concentration of 0.00625mol; the pH is adjusted to 6 and 8 with 1mol NaOH solution. The
hydrothermal reaction is carried out at 200o
C for one day; then, the suspension is washed and
centrifuged twice with water, and the product TbPO4.H2O is obtained after drying at 80o
C for 4
hours. SEM imaging results show that the product is nano-sized and rod-shaped with a diameter
of about 20nm. At pH = 6, the length is about 200nm, while at pH = 8, the size is about 187.5nm.
By measuring the luminescence spectrum of the product, it was determined that the samples
obtained at different pHs all had the most vigorous light emission at a wavelength of 550nm,
equivalent to the blue light region. The intensity of the pH = 6 sample was weaker than that of the
pH = 8 sample.