Synthesis of series of transition metal-ligand (TM-L), μ2-O-TM, μ3-O-TM-L borates: Characterization and oxygen reduction reaction (ORR) activity property exploration

IF 2.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Polyhedron Pub Date : 2024-11-17 DOI:10.1016/j.poly.2024.117304

Zhen-Ping Liao , Shu-Sheng Xin , Wei Li , Chun-Yang Pan

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Abstract

A series of borates 1–6, have been synthesized under mild conditions, single crystal X-ray diffraction indicates that they possess three types of metal complex configurations in borate crystalline, exemplified as TM-L for 3 and 4, μ₂-O-TM for 2, μ₃-O-TM for 1, 5 and 6. 5 and 6 exhibit both four-coordinated and six-coordinated metal ions in one single crystal lattice. 1 to 6 are further characterized by powder X-ray diffraction, elemental analysis, IR spectrum and UV–vis spectroscopy. In addition, the ORR activities of them are performed. Among them, cobalt borate-based catalyst exhibits the best catalytic performance, with a half-wave potential of 0.82 V. Furthermore, the relationship between the ORR properties of TM complex borates and their framework densities was explored.

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合成一系列过渡金属配体（TM-L）、μ2-O-TM、μ3-O-TM-L 硼酸盐：表征和氧还原反应 (ORR) 活性特性探索

在温和的条件下合成了一系列硼酸盐 1-6，单晶 X 射线衍射表明它们在硼酸盐晶体中具有三种金属复合物构型，例如 3 和 4 为 TM-L，2 为 μ2-O-TM，1、5 和 6 为 μ3-O-TM。5 和 6 在一个单晶晶格中同时显示出四配位和六配位金属离子。粉末 X 射线衍射、元素分析、红外光谱和紫外-可见光谱对 1 至 6 做了进一步表征。此外，还对它们进行了 ORR 活性测试。其中，硼酸钴基催化剂的催化性能最好，半波电位为 0.82 V。此外，还探讨了 TM 复合硼酸盐的 ORR 特性与其框架密度之间的关系。

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来源期刊

Polyhedron 化学-晶体学

CiteScore

4.90

自引率

7.70%

发文量

515

审稿时长

2 months

期刊介绍： Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry. Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.