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A novel route for preparing Gd2O2S:Eu3+ phosphor using high-sulfur petroleum coke as a sulfur source

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Abstract

In this paper, high-sulfur petroleum coke was used as the sulfur source and Gd2O2S powder was prepared by sulfurization of the Gd2O3 powder synthesized by homogeneous precipitation method. Gd2O2S:Eu3+ phosphor was also prepared by the same process. And the phase and morphology of the as-prepared product were studied by X-ray powder diffraction (XRD) and field emission scanning electron microscope (FE-SEM) techniques. The results indicated that the sulfurization product at 1000 ℃ is single phase Gd2O2S with quasi spherical shape when the Gd3+ ion concentration is only at 0.01 mol·L−1. Here the pyrolysis gases during high-temperature pyrolysis are evaluated by combining with high-temperature thermogravimetric analysis (TG), infrared analysis (IR), and mass spectrometry (MS). The results show that the petroleum coke pyrolysis gases are CO, H2O, CO2, H2S, SO2, and H2, roughly consistent with those of sample mass loss. In addition, the formation mechanism of Gd2O2S is also proposed. PL excitation and emission spectra show that when the concentration of Eu3+ ion is 9%, the PL excitation intensity is the strongest, and concentration quenching occurs. Under excitation at 321 nm light, the red emission of the Gd2O2S:9%Eu3+ phosphor has the strongest peak at 626 nm, which is attributed to the 5D0 → 7F2 transition of the Eu3+ ion.

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Data Availability

All data generated or analyzed during the current study are available from the corresponding author upon request.

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Acknowledgements

Natural Science Foundation of Liaoning Province under Grant No. 2022-MS-364; Educational Commission of Liaoning Province of China under Grant No. L2020021; Fushun Revitalization Talents Program under Grant No. FSYC202107011.

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Authors and Affiliations

  1. School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, People’s Republic of China

    Hongyan Piao, Huilin Qu, Jingbao Lian, Nianchu Wu, Hua Qin & Jiao He

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  1. Hongyan Piao
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  2. Huilin Qu
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  3. Jingbao Lian
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  4. Nianchu Wu
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  5. Hua Qin
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Correspondence to Jingbao Lian.

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Piao, H., Qu, H., Lian, J. et al. A novel route for preparing Gd2O2S:Eu3+ phosphor using high-sulfur petroleum coke as a sulfur source. J Aust Ceram Soc (2023). https://doi.org/10.1007/s41779-023-00957-w

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