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BiFeO3 perovskite as an efficient photocatalyst synthesised by soft chemical route
Materials Technology ( IF 3.1 ) Pub Date : 2020-06-19 , DOI: 10.1080/10667857.2020.1782061
Manish Kumar Verma 1 , Atendra Kumar 1 , Tapas Das 2 , Vinod Kumar 1 , Shruti Singh 1 , Vishnu Shankar Rai 1 , Dinesh Prajapati 1 , Ravi Kumar Sonwani 2 , Kedar Sahoo 2 , K.D. Mandal 1
Affiliation  

ABSTRACT

Bismuth ferrite nanostructure, BiFeO3, (BFO) belonging to perovskite family, was synthesised by a chemical route sintering temperature at 800°C for 6 h. The crystalline phase of the materials was investigated by X-ray diffraction (XRD). The morphology and particle size of the BFO samples were determined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis, respectively. The SEM images displayed the bimodal structure with the average grain size was found to be 0.6–3.7 µm. TEM observation confirmed the nanocrystalline nature of the particle having the size in the range of 50 ± 20 nm. We have been studied the charge storage capability and impedance of the BFO using cyclic voltammetry and electrochemical impedance spectroscopy, respectively. The prepared material demonstrates pseudocapacitive nature with a charge transfer resistance of 33 Ω. The synthesised material showed that the optical band gap value (Eg) of BiFeO3 varies between 2.2 eV.



中文翻译:

BiFeO3钙钛矿作为一种通过软化学路线合成的高效光催化剂

摘要

铋铁氧体纳米结构,BiFeO 3, (BFO) 属于钙钛矿家族,是通过化学途径在 800°C 下烧结 6 小时合成的。通过X射线衍射(XRD)研究材料的晶相。BFO 样品的形态和粒径分别通过扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 分析确定。SEM 图像显示双峰结构,平均晶粒尺寸为 0.6-3.7 µm。TEM 观察证实了尺寸在 50 ± 20 nm 范围内的颗粒的纳米晶体性质。我们已经分别使用循环伏安法和电化学阻抗谱研究了 BFO 的电荷存储能力和阻抗。制备的材料表现出赝电容性质,电荷转移电阻为 33 Ω。g ) BiFeO 3在 2.2 eV 之间变化。

更新日期:2020-06-19
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