Mechanistic insights into the formation of phase pure V2O5 2D nanostructures: Advanced fourier transform-raman spectroscopy analysis

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films Pub Date : 2025-02-28 DOI:10.1016/j.tsf.2025.140642

Shrivathsa V S , Shounak De , Shubhava Shetty , Deekshitha K , Yuvaraj A R , Jayarama A , Shriganesh Prabhu , Richard Pinto

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引用次数: 0

Abstract

Vanadium Pentoxide (V₂O₅) thin films and 2-Dimensional nanostructures have gained significant attention for their unique properties and diverse applications in gas sensing, energy storage, catalysis, and electrochromic devices. Despite their potential, a comprehensive understanding of their growth dynamics remains limited. This study offers a detailed exploration of the synthesis and properties of phase-pure V₂O₅ thin films and their nanostructures using a combination of solution combustion synthesis and spray pyrolysis deposition. The Aqueous Combustion Mixtures (ACM) were prepared using ammonium metavanadate and urea as precursor solutions, which were used to deposit V₂O₅ using the spray pyrolysis technique at temperatures ranging from 200°C to 550°C. Advanced characterization techniques, including Field Emission Scanning Electron Microscopy, X-Ray Diffraction, and Fourier Transform Raman Spectroscopy, were employed to analyze the films. The results revealed that films synthesized at 400°C exhibited exceptional crystallinity, microstructural integrity, and phase purity. At higher temperatures, a meta-stable β-V₂O₅ phase was also observed. This research bridges a critical gap in the existing literature by enhancing the understanding of the growth mechanisms of V₂O₅ thin films and their nanostructures, thereby facilitating the optimized formation of high-quality V₂O₅ nanostructures for advanced technological applications.

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纯相V2O5二维纳米结构形成的机理：先进的傅立叶变换-拉曼光谱分析

五氧化二钒（V₂O₅）薄膜和二维纳米结构因其独特的性能和在气敏、储能、催化和电致变色器件中的各种应用而受到了极大的关注。尽管它们具有潜力，但对其增长动态的全面了解仍然有限。该研究使用溶液燃烧合成和喷雾热解沉积相结合的方法，详细探索了相纯V₂O₅薄膜及其纳米结构的合成和性能。以偏氰酸铵和尿素为前驱体制备了水相燃烧混合物（ACM），采用喷雾热解技术在200 ~ 550℃的温度范围内沉积V2O5。采用先进的表征技术，包括场发射扫描电子显微镜，x射线衍射和傅里叶变换拉曼光谱对薄膜进行了分析。结果表明，在400℃下合成的薄膜具有优异的结晶度、微观结构完整性和相纯度。在较高温度下，还观察到亚稳定的β-V₂O₅相。这项研究通过加强对V₂O₅薄膜及其纳米结构的生长机制的理解，弥合了现有文献中的关键空白，从而促进了高质量V₂O₅纳米结构的优化形成，用于先进的技术应用。

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来源期刊

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.