Chelating agent assisted BiFeO3 nanostructured material for visible light induced photocatalytic degradation of methylene blue dye

IF 3.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-12-10 DOI:10.1007/s10971-024-06644-x

Nilesh N. Mharsale, Swarada G. More, Manoj A. More, Sarika D. Shinde, Ganesh E. Patil, Sanjay R. Gadakh

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Abstract

Bismuth Ferrite (BiFeO₃) nanostructured materials were synthesized by sol-gel method using Ethylenediaminetetraacetic acid (EDTA) and glycine (GL) as chelating agents at different synthesis conditions. The synthesized BiFeO₃ (BFO) material was characterized by using Scanning electron microscopy (SEM), X-ray powder diffractometry (XRD), UV visible spectroscopy and Fourier infrared spectroscopy technique (FTIR) for investigating the structural and optical properties. The presence of chelating agents (EDTA and GL) influences the crystallite size, morphology and degradation efficiency of BFO. Analysis by scanning electron microscopy revealed morphological changes of BFO from nanoparticles to multilayered nanosheet-like structures after changing the chelating agent. The XRD pattern indicated the triclinic crystal system of BFO with the co-existence of mixed phases. The average crystallite size measured using Scherrer’s formula for BFO (EDTA) and BFO (GL) was found to be 43 nm and 35 nm respectively. The UV-visible analysis showed that the band gap energy for BFO (EDTA) was 1.86 eV and for BFO (GL) was 2.0 eV. The structural, morphological and optical properties as well as photocatalytic activity were found to be affected by the change in chelating agents. The photocatalytic properties of prepared samples were evaluated by the degradation of methylene blue dye under visible light irradiation. The degradation efficiencies of BFO (EDTA) were found to be 71.42% and 76.66% for catalyst masses of 0.05 g and 0.1 g respectively, whereas BFO (GL) exhibited lower degradation efficiencies of 48.05% and 62.33% for the same masses respectively. These results demonstrate that EDTA significantly enhances the photocatalytic activity of BFO, likely due to improved electron transfer and increased surface reactivity, which means the use of EDTA as a chelating agent for the sol-gel synthesis of BFO makes it a more efficient photocatalyst.

Graphical abstract

Synthesis, characterization, and photocatalytic results of BiFeO₃.

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螯合剂辅助BiFeO3纳米结构材料可见光诱导光催化降解亚甲基蓝染料

以乙二胺四乙酸（EDTA）和甘氨酸（GL）为螯合剂，在不同的合成条件下，采用溶胶-凝胶法制备了铋铁氧体（BiFeO3）纳米结构材料。采用扫描电子显微镜（SEM）、x射线粉末衍射仪（XRD）、紫外可见光谱和傅里叶红外光谱技术（FTIR）对合成的BiFeO3 （BFO）材料进行了表征，研究了材料的结构和光学性质。螯合剂（EDTA和GL）的存在影响了BFO的晶粒大小、形貌和降解效率。扫描电镜分析显示，改变螯合剂后，BFO由纳米颗粒变为多层纳米片状结构。XRD谱图表明BFO为三斜晶系，混合相共存。用Scherrer公式测定的BFO （EDTA）和BFO （GL）的平均晶粒尺寸分别为43 nm和35 nm。紫外可见分析表明，BFO （EDTA）的带隙能为1.86 eV, BFO （GL）的带隙能为2.0 eV。研究发现，螯合剂的变化会影响其结构、形态、光学性质和光催化活性。通过可见光下对亚甲基蓝染料的降解，评价了所制备样品的光催化性能。当催化剂质量为0.05 g和0.1 g时，BFO （EDTA）的降解效率分别为71.42%和76.66%，而相同质量时，BFO （GL）的降解效率分别为48.05%和62.33%。这些结果表明，EDTA显著提高了BFO的光催化活性，可能是由于改善了电子转移和增加了表面反应活性，这意味着使用EDTA作为螯合剂用于BFO的溶胶-凝胶合成使其成为一种更有效的光催化剂。BiFeO3的合成、表征及光催化结果。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.