Rb4Sb4S8 and Rb2Sb4S7·H2O: Solvothermal synthesis, characterization, and oxygen evolution reaction performance investigation

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Structure Pub Date : 2026-05-15 Epub Date: 2026-02-07 DOI:10.1016/j.molstruc.2026.145606

Wei Zhu , Xin Liu , Menghe Baiyin

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引用次数: 0

Abstract

Two ternary sulfides Rb₄Sb₄S₈ (1) and Rb₂Sb₄S₇·H₂O (2) were synthesized under solvothermal conditions. Compound 1 was a zero-dimensional(0-D) clustered structure and compound 2 was a two-dimensional(2-D) layered structure. Compounds 1, 2 were studied for photoelectric properties and suggested that they had higher photocurrent densities and good reproducibility. The band gaps for compounds 1 and 2, derived from UV–visible diffuse reflectance measurements, were determined to be 2.15 and 1.98 eV, respectively. It indicated that they have semiconductor properties. Experimentally measured bandgap values are consistent with the theoretically calculated values. The electrochemical performance test results showed that compounds had good oxygen evolution reaction (OER) electrocatalytic properties. This study provided a new idea for the synthesis of new sulfides.

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Rb4Sb4S8和Rb2Sb4S7·H2O：溶剂热合成、表征及析氧性能研究

在溶剂热条件下合成了两种三元硫化物Rb4Sb4S8(1)和Rb2Sb4S7·H2O(2)。化合物1为零维（0-D）簇状结构，化合物2为二维（2- d）层状结构。对化合物1、2的光电性质进行了研究，发现它们具有较高的光电流密度和良好的重现性。化合物1和2的带隙分别为2.15 eV和1.98 eV，由紫外可见漫反射测量得到。这表明它们具有半导体性质。实验测量的带隙值与理论计算值一致。电化学性能测试结果表明，化合物具有良好的析氧反应（OER）电催化性能。该研究为新型硫化物的合成提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.