Synthesis of Porous Co3O4 NPs by Solution Combustion: Influence of F/O Ratio on Morphology and Porosity

IF 0.6 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI:10.3103/S1061386225700074

M. Hashami, A. Imash, Z. Mansurov

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Abstract

In this study, porous Co₃O₄ nanoparticles (NPs) were synthesized through solution combustion synthesis (SCS) method. Precursor cobalt nitrate hexahydrate as the oxidizer and glycine as the fuel were used, focusing on the regular alterations to the fuel-to-oxidizer (F/O) ratio so as to achieve the desired characteristics of the produced nanoparticles in terms of their morphology and structure. XRD analysis confirmed the formation of spinel-phase Co₃O₄ with an average crystallite size of approximately 40 nm. SEM imaging revealed an interconnected nanoporous structure with pore sizes ranging from 100 to 500 nm. Raman spectroscopy identified a strong F₂g mode at 600 cm^–1, corresponding to asymmetric stretching vibrations of oxygen atoms coordinated to tetrahedral cobalt ions. Co₃O₄ NPs have been widely reported for their applications in catalysis, energy storage, and environmental remediation due to their superb electrochemical performance and stability. Through examining the effects of varied F/O ratios, this work aimed to extend the knowledge on how the synthesis parameters could be utilized to optimize the characteristics of Co₃O₄ NPs towards advanced technological uses. The results will be significant for enhancing functional materials, catalysts and the creation of energy conversion and storage systems of the future.

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溶液燃烧合成多孔Co3O4 NPs: F/O比对形貌和孔隙率的影响

本研究采用溶液燃烧合成（SCS）法合成了多孔Co3O4纳米颗粒（NPs）。采用前驱体六水硝酸钴作为氧化剂，甘氨酸作为燃料，重点研究燃料与氧化剂（F/O）比的规律变化，从而使所制备的纳米颗粒在形貌和结构上达到所期望的特性。XRD分析证实形成了尖晶石相Co3O4，平均晶粒尺寸约为40 nm。扫描电镜（SEM）成像显示了孔径在100 ~ 500 nm之间的相互连接的纳米孔结构。拉曼光谱在600 cm-1处发现了一个强F2g模式，对应于氧原子与四面体钴离子配位的不对称拉伸振动。由于其优异的电化学性能和稳定性，Co3O4 NPs在催化、储能和环境修复等方面的应用得到了广泛的报道。通过研究不同F/O比的影响，本工作旨在扩展如何利用合成参数优化Co3O4 NPs特性的知识，以实现先进的技术应用。这一结果对于增强功能材料、催化剂以及创造未来的能量转换和存储系统具有重要意义。

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来源期刊

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

期刊介绍： International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.