具有高效光催化活性的PrO@C的简易构建工程
Facile Construction Engineering of PrO@C with Efficient Photocatalytic Activity.
作者信息
Chang Guoju, Ma Longzhong, Tu Yanhong, Mao Chenxin, Aprea Paolo, Hao Shiyou
机构信息
Xingzhi College, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China.
Department of Chemical, Materials and Production Engineering, University Federico II, P.le V. Tecchio 80, 80125 Naples, Italy.
出版信息
Molecules. 2024 Jul 29;29(15):3568. doi: 10.3390/molecules29153568.
In this study, facile construction engineering of PrO@C with efficient photocatalytic activity was established. Taking advantage of the flocculation of Pr in the base medium, acid red 14 (AR14) was flocculated together with Pr(OH) precipitate, in which Pr(OH) and AR14 mixed highly uniformly. Calcinated at high temperature in N2, a novel PrO@C was successfully synthesized. The resulting materials were characterized by XRD, SEM, FT-IR, Raman, and XPS techniques. The results show that the cubic PrO@C with Fm3m space group, similar to that of PrO, was obtained. From the results of the photodegradation of AR14, it is found that the photocatalytic efficiency of PrO@C is higher than that of pure PrO due to the formation of abundant carbon bonds and oxygen vacancies. Compared with pure PrO and other carbon-based composites, the acid resistance of PrO@C is greatly improved due to the highly uniform dispersion of PrO and C, which lays a solid foundation for the practical application of PrO@C. Moreover, the role of NH3·HO and NaOH used as precipitants for the photocatalytic efficiency of PrO was investigated in detail.
在本研究中，建立了具有高效光催化活性的PrO@C的简便构建工程。利用Pr在碱性介质中的絮凝作用，酸性红14（AR14）与Pr(OH)沉淀一起絮凝，其中Pr(OH)和AR14高度均匀混合。在N2中高温煅烧，成功合成了一种新型的PrO@C。通过XRD、SEM、FT-IR、拉曼和XPS技术对所得材料进行了表征。结果表明，获得了具有与PrO相似的Fm3m空间群的立方PrO@C。从AR14的光降解结果发现，由于形成了丰富的碳键和氧空位，PrO@C的光催化效率高于纯PrO。与纯PrO和其他碳基复合材料相比，由于PrO和C的高度均匀分散，PrO@C的耐酸性大大提高，这为PrO@C的实际应用奠定了坚实基础。此外，还详细研究了用作PrO光催化效率沉淀剂的NH3·HO和NaOH的作用。
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