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Ce2(MoO4)3 synthesized with oleylamine and oleic acid as additives for photocatalysis: effect of preparation method

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Abstract

Ce2(MoO4)3 was prepared using dielectric barrier discharge (DBD) plasma method, co-precipitation method and hydrothermal method, respectively, with water/ethanol (W/O) as solvent, oleylamine (OAm) and oleic acid (OAc) as additives. Preparation method showed significant influence on the morphological and structural properties, as well as photocatalytic performance. Ce2(MoO4)3 synthesized with DBD plasma (MO-P) was mainly flowerlike nanosheets, which were beneficial to promoting electron transfer and providing more space for catalytic activity. Also, MO-P samples exhibited more oxygen vacancies, which were conducive to the photocatalytic performance. What’s more, MO-P showed lower PL intensity and narrow energy gap, which implied a slow photoelectron–hole pair recombination rate and an increased electron transfer rate. The degradation rate of methyl orange (50 mg/L) could achieve 98% within 12 min with 0.5 g/L MO-P. Hydroxyl radicals (·OH) and superoxide radicals (·O2−) played a major effect. Plasma synthesis method exhibited potential application prospect in photocatalysts preparation.

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Acknowledgements

This work was supported by the Natural Science Foundation of Shandong Province [ZR2020MB034].

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Authors and Affiliations

  1. College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, Shandong, China

    Liang Huang

  2. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, Shandong, China

    Xiaowen Kong, Kanglu Chang, Xumei Tao, Ying Wang & Zhixin Yu

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  1. Liang Huang
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  2. Xiaowen Kong
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  4. Xumei Tao
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Correspondence to Xumei Tao.

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Huang, L., Kong, X., Chang, K. et al. Ce2(MoO4)3 synthesized with oleylamine and oleic acid as additives for photocatalysis: effect of preparation method. Photochem Photobiol Sci 22, 241–250 (2023). https://doi.org/10.1007/s43630-022-00308-x

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