Effect of Synthesis Conditions and Doping on Properties of Hematite Nanostructures

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2024-09-11 DOI:10.1134/S0036024424701462

Harsimranjot Kaur

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Abstract

Pure and Co (10 mol %)-doped α-Fe₂O₃ (Hematite) nanostructures have been effectively synthesized by hydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) have been used for the analysis of crystallography, morphology and functional groups of synthesized samples. The banding nature of synthesized samples is analyzed by Fourier transform infrared spectroscopy (FTIR). Powder XRD results reveal the formation of rhombohedral structured α-Fe₂O₃ nanostructures. Effect of dopant and synthesis conditions, such as precursor change and time duration of heating temperature has been investigated on the morphology of pure and Co (10 mol %)-doped α-Fe₂O₃ nanostructures. It has been observed that the addition of dopant, change of precursor and time duration of the heating temperature of hydrothermal treatment can effectively control the morphology of NPs. Methylene dye (MB) has been used as a test contaminant in aqueous solution to determine the photo-catalytic potential of Fe₂O₃ nanostructures under visible light.

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合成条件和掺杂对赤铁矿纳米结构特性的影响

摘要通过水热法有效合成了纯α-Fe2O3（赤铁矿）和掺杂 Co（10 mol %）的α-Fe2O3（赤铁矿）纳米结构。X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和能量色散 X 射线光谱 (EDS) 被用于分析合成样品的晶体学、形态学和官能团。傅立叶变换红外光谱（FTIR）分析了合成样品的带状性质。粉末 XRD 结果显示形成了斜方体结构的 α-Fe2O3 纳米结构。研究了掺杂剂和合成条件（如前驱体的变化和加热温度的持续时间）对纯α-Fe2O3 纳米结构和 Co（10 摩尔%）掺杂α-Fe2O3 纳米结构形态的影响。结果表明，掺杂剂的添加、前驱体的改变和水热处理加热温度的持续时间可以有效地控制纳米粒子的形貌。利用水溶液中的亚甲基染料（MB）作为测试污染物，测定了 Fe2O3 纳米结构在可见光下的光催化潜力。

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.