Kusior Anna, Waś Olga, Liczberska Zuzanna, Łacic Julia, Jeleń Piotr
Faculty of Materials Science and Ceramics, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland.
Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland.
Molecules. 2024 Oct 14;29(20):4859. doi: 10.3390/molecules29204859.
The synthesis and characterization of iron oxide nanostructures, specifically snowflake architecture, are investigated for their potential applications in electrochemical sensing systems. A Raman spectroscopy analysis reveals phase diversity in the synthesized powders. The pH of the synthesis affects the formation of the hematite (α-FeO) and goethite (α-FeOOH). Scanning electron microscopy (SEM) images confirm the distinct morphologies of the particles, which are selectively obtained through recrystallization during the elongated reaction time. An electrochemical analysis demonstrates the differing behaviors of the particles, with synthesis pH affecting the electrochemical activity and surface area differently for each shape. Cyclic voltammetry measurements reveal reversible dopamine detection processes, with snowflake iron oxide showing lower detection limits than a mixture of snowflakes and cube-like particles. This research contributes to understanding the relationship between iron oxide nanomaterials' structural, morphological, and electrochemical properties. It offers practical insights into their potential applications in sensor technology, particularly dopamine detection, with implications for biomedical and environmental monitoring.
研究了氧化铁纳米结构（特别是雪花状结构）的合成与表征，以探索其在电化学传感系统中的潜在应用。拉曼光谱分析揭示了合成粉末中的相多样性。合成过程的pH值会影响赤铁矿（α-Fe₂O₃）和针铁矿（α-FeOOH）的形成。扫描电子显微镜（SEM）图像证实了颗粒的独特形态，这些形态是在延长的反应时间内通过重结晶选择性获得的。电化学分析表明颗粒具有不同的行为，合成pH值对每种形状的电化学活性和表面积有不同的影响。循环伏安法测量揭示了可逆的多巴胺检测过程，雪花状氧化铁的检测限低于雪花状和立方状颗粒的混合物。这项研究有助于理解氧化铁纳米材料的结构、形态和电化学性质之间的关系。它为其在传感器技术中的潜在应用，特别是多巴胺检测，提供了实际见解，对生物医学和环境监测具有重要意义。
