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PrMnMO（M = Cr、Fe、Co、Ni）钙钛矿的合成、表征及电催化性能

Synthesis, Characterization, and Electrocatalytic Properties of PrMnMO (M = Cr, Fe, Co, Ni) Perovskites.

作者信息

Ramadani Besarta Cheliku, Sela Jeta, Stojanov Leon, Popovska Sofija, Mirčeski Valentin, Bukleski Miha, Dimitrovska-Lazova Sandra, Reka Arianit A, Aleksovska Slobotka

机构信息

Department of Chemistry, Faculty of Natural Sciences and Mathematics, University of Tetovo, Ilinden n.n., 1200 Tetovo, North Macedonia.

Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Arhimedova 5, 1000 Skopje, North Macedonia.

出版信息

Materials (Basel). 2025 Feb 6;18(3):717. doi: 10.3390/ma18030717.

DOI:10.3390/ma18030717
PMID:39942389
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11820077/
Abstract

In this paper, the synthesis, characterization, and investigation of electrocatalytic properties of perovskites of general formula PrMnMO (M = Cr, Fe, Co, Ni) are presented. The synthesis was conducted by the solution combustion method using glycine as a fuel. The perovskite with the formula PrMnFeO was also synthesized by the sol-gel combustion method with citric acid as fuel. The obtained perovskites were investigated by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX), infrared spectroscopy, and cyclic voltammetry. The XRPD patterns showed that the compounds are pure and isostructural within the series. The unit cell parameters of the compounds were determined within the space group, and several crystallochemical parameters were calculated and discussed. The recorded SEM images of the perovskites revealed a porous morphology, while the EDX analysis confirmed the 2:1:1 atomic percentage ratio of Pr:Mn:M. Within this investigation, the electrocatalytic properties of the obtained perovskites towards oxidation of OH ions and HO oxidation in phosphate buffer were studied by cyclic voltammetry, using a paraffin-impregnated graphite electrode (PIGE) modified with microcrystals of the investigated perovskites. PrMnFeO showed high electrocatalytic activity for OH oxidation, while both PrMnFeO and PrMnCoO exhibited significant efficiency for HO oxidation, with a distinct oxidation peak with a peak potential of 0.6 V.

摘要

本文介绍了通式为PrMnMO（M = Cr、Fe、Co、Ni）的钙钛矿的合成、表征及其电催化性能研究。合成采用甘氨酸作为燃料的溶液燃烧法进行。化学式为PrMnFeO的钙钛矿也通过以柠檬酸为燃料的溶胶 - 凝胶燃烧法合成。通过X射线粉末衍射（XRPD）、带能谱X射线光谱（EDX）的扫描电子显微镜（SEM）、红外光谱和循环伏安法对所得钙钛矿进行了研究。XRPD图谱表明该系列化合物纯净且同构。在空间群内确定了化合物的晶胞参数，并计算和讨论了几个晶体化学参数。记录的钙钛矿SEM图像显示出多孔形态，而EDX分析证实了Pr:Mn:M的原子百分比为2:1:1。在这项研究中，使用浸渍有所研究钙钛矿微晶的石蜡浸渍石墨电极（PIGE），通过循环伏安法研究了所得钙钛矿对磷酸盐缓冲液中OH离子氧化和HO氧化的电催化性能。PrMnFeO对OH氧化表现出高电催化活性，而PrMnFeO和PrMnCoO对HO氧化均表现出显著效率，具有明显的氧化峰，峰电位为0.6 V。

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本文引用的文献

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Synthesis, Structural Characterization, and Infrared Analysis of Double Perovskites PrNiMnO, GdNiMnO, and ErNiMnO Functional Nano-Ceramics.双钙钛矿PrNiMnO、GdNiMnO和ErNiMnO功能纳米陶瓷的合成、结构表征及红外分析
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