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Europium orthophosphate monohydrate(EuPO4·H2O) nanorods with typical dimensions of about 10-30 nm in diameter and 300-500 nm in length were prepared by using the soft template method.The effects of using diethylene glycol(DEG) and polyethylene gly-col(PEG) polymers as well as the pH values on the size,crystalline structure and morphology of EuPO4·H2O nanorods were investigated.Field emission scanning electron microscopy(FESEM) and X-ray diffraction(XRD) data of the prepared samples were elucidated.The nano-rods were highly uniform and their mean length was reduced by using DEG and PEG as soft template agents.For all prepared samples,the rhabdophane-type hexagonal EuPO4·H2O was the dominated phase.The photoluminescence(PL) spectroscopy measurements of EuPO4·H2O nanorods revealed that,under UV excitation,EuPO4·H2O nanorods exhibited strong luminescence with narrow bands corresponding to the in-tra-4f transitions of 5D0→7Fj(j=1,2,3,4) of Eu3+ ions.The peaks were found at 594 nm(5D0→7F1) ,619 nm(5D0→7F2) ,652 nm(5D0→7F3) ,and 697 nm(5D0→7F4) ,with the strongest emission at 594 nm.
Europium orthophosphate monohydrate (EuPO4.H2O) nanorods with typical dimensions of about 10-30 nm in diameter and 300-500 nm in length were prepared by using the soft template method. The effects of using diethylene glycol (DEG) and polyethylene gly-col (PEG) polymers as well as the pH values on the size, crystalline structure and morphology of EuPO4.H2O nanorods were investigated. Field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) data of the prepared samples were elucidated. The nano-rods were highly uniform and their mean length was reduced by using DEG and PEG as soft template agents. For all prepared samples, the rhabdophane-type hexagonal EuPO4 · H2O was the dominated phase. The photoluminescence (PL) spectroscopy measurements of EuPO4 · H2O nanorods revealed that, under UV excitation, EuPO4 · H2O nanorods in strong luminescence with narrow bands corresponding to the in-tra-4f transitions of 5D0 → 7Fj (j = 1,2,3,4) of Eu3 + ions.The peaks were found at 594 nm (5D0 → 7F1), 619 nm (5D0 → 7F2), 652 nm (5D0 → 7F3), and 697 nm (5D0 → 7F4) with the strongest emission at 594 nm.