Impact of Controlled Thermal Oxidation on Phase Transition and Tailoring Properties of Sb2S3/Sb2O3 Composites

IF 3.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2024-05-13 DOI:10.1007/s12540-024-01692-y

Chatkaew Chailuecha, Reungruthai Sirirak, Tawat Suriwong, Arrak Klinbumrung

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Abstract

The study investigates the synthesis and characterisation of the Sb₂S₃/Sb₂O₃ composite materials through thermal oxidation at 350 °C with varying heating times. The structural, morphology, and electrical behaviours were characterised using XRD, FT-IR, SEM, EDS, UV–Vis spectroscopy, PL, and EIS. The phase transformation from stibnite (Sb₂S₃) to Sb₂O₃ phases (senarmontite and valentinite) is observed and discussed. The FT-IR spectra confirm the presence of characteristic Sb–S and Sb–O vibrations. The absorbance spectrum reveals a shift in the energy bandgap (E_g) with values of 1.58–2.23 eV, indicating the compositional changes due to prolonged heating. The emergence of electron donor Sb⁵⁺ ions (at 541.36 eV) and Sb³⁺ (at 540 eV) was investigated in the XPS study. In association, PL emission at 560 nm is attributed to the oxidative transformation of Sb³⁺ to Sb⁵⁺, suggesting the redox transformations within the composite. EIS analysis reveals the fastest interfacial charge-transfer process in the 60 min—heated sample. As a result, the prolonged heating time influences the phase transition and composition, resulting in the properties tailoring of the Sb₂S₃/Sb₂O₃ composites.

Graphical Abstract

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受控热氧化对 Sb2S3/Sb2O3 复合材料相变和定制特性的影响

本研究探讨了通过 350 °C 不同加热时间的热氧化合成 Sb2S3/Sb2O3 复合材料并对其进行表征。利用 XRD、FT-IR、SEM、EDS、紫外-可见光谱、PL 和 EIS 对结构、形态和电学行为进行了表征。观察并讨论了从闪锌矿（Sb2S3）到 Sb2O3 相（senarmontite 和 valentinite）的相变。傅立叶变换红外光谱证实了 Sb-S 和 Sb-O 振荡特征的存在。吸收光谱显示能带隙（Eg）发生了变化，其值为 1.58-2.23 eV，这表明由于长时间加热，成分发生了变化。XPS 研究调查了电子供体 Sb5+ 离子（在 541.36 eV 处）和 Sb3+ 离子（在 540 eV 处）的出现。与此相关，560 纳米波长处的 PL 发射归因于 Sb3+ 向 Sb5+ 的氧化转化，表明了复合材料内部的氧化还原转化。EIS 分析表明，在加热 60 分钟的样品中，界面电荷转移过程最快。因此，延长加热时间会影响相变和组成，从而使 Sb2S3/Sb2O3 复合材料的性能发生改变。

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.