Water-assisted chemical sintering of vanadium dioxide powder and its use for eicosane detection

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-04-01 DOI:10.1016/j.ceramint.2025.01.183

Carlos Alberto Ibarra-Becerra , Benjamín Portillo-Rodríguez , José Emanuel Aguilar-Delgado , José Daniel Sánchez-Vásquez , Raúl Balderas-Navarro , Carlos Manuel Guerra-Galicia , Marisol Reyes-Reyes

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Abstract

We report a straightforward water-assisted chemical sintering to procedure a predominantly monoclinic (M) phase vanadium dioxide (VO₂) powder-based substrate. This substrate was tested as a platform to enhance the Raman signal for the initial characterization of eicosane as an analyte. The Raman enhancement activity produced by VO₂(M) powder was synthesized by reacting vanadium pentoxide (V₂O₅) with oxalic acid (H₂C₂O₄) in a molar ratio of 1:5. The VO₂ - 1:5 powder sample showed a lower crystallinity and higher solubility than the sample synthesized with a reduced concentration of oxalic acid. After signal magnification on the analyte-VO₂ - 1:5 - H₂O -substrate, the position and intensity of the observed Raman bands suggest an analyte-surface interaction through to the interplay of two enhancement mechanisms: charge transfer (chemical) and an electromagnetic (EM), possibly by oxygen vacancies. Furthermore, a possible route for an Enhancement Factor (EF) for eicosane on this surface type is discussed. The final data indicated that the proposed synthesis process is ideal for developing a surface with Raman enhancement activity, which is why it is suggested as a biomolecule detection platform.

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二氧化钒粉末的水助化学烧结及其在二十烷检测中的应用

我们报告了一种直接的水辅助化学烧结来处理主要是单斜(M)相二氧化钒（VO2）粉末基衬底。该底物作为平台进行了测试，以增强拉曼信号，用于作为分析物的二十烷的初始表征。采用五氧化钒（V2O5）与草酸（H2C2O4）以1:5的摩尔比反应，合成了VO2(M)粉末的拉曼增强活性。与降低草酸浓度合成的样品相比，VO2 - 1:5粉末样品的结晶度较低，溶解度较高。在分析物- vo2 - 1:5 - H2O -衬底上进行信号放大后，观察到的拉曼带的位置和强度表明，分析物与表面通过两种增强机制相互作用：电荷转移（化学）和电磁（EM），可能是由氧空位引起的。此外，本文还讨论了在这种表面类型上增加二十烷增强因子（EF）的可能途径。最后的数据表明，所提出的合成工艺对于开发具有拉曼增强活性的表面是理想的，这就是为什么它被建议作为生物分子检测平台。

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

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.