Department of Physics, Jadavpur University, Kolkata-700032, India.
Department of Physics, Jogamaya Devi College, Kolkata-700026, India.
Dalton Trans. 2022 Nov 15;51(44):16926-16936. doi: 10.1039/d2dt02918a.
This work reports a solvothermal synthesis of ferromagnetic bismuth ferrite (BFO) nanoparticle and its piezo activity in the domain of catalytic degradation of carcinogenic and genotoxic rhodamine B (RhB) dye and pathogenic bacteria as well. After synthesis and characterization, the structural and morphological features of the catalyst were further investigated using density functional theory (DFT), which enabled us to estimate the polarizability and many other important electrical properties of the synthesized material. The DFT study reveals remarkably high polarizability and dipole moment, which were utilized to validate the generation of piezo response by the synthesized material. Interestingly, we found enhanced piezo catalytic degradation efficiency ( ∼ 99%) along with a high rate constant ( ∼ 2.259 × 10 min), indicating a fast and efficient degradation process. In the case of pathogenic bacteria , the degradation efficacy was found to be ∼94%. Moreover, the extraction of this catalyst is quite simple. Due to its high remanent magnetization (retentivity ∼0.08 emu g), the catalyst can be extracted from the treated water sample by using external magnetic stimulation, making it a potential candidate for sustainable wastewater treatment.
这项工作报道了一种通过溶剂热法合成铁磁性铋铁氧体（BFO）纳米颗粒，并研究了其在催化降解致癌和遗传毒性罗丹明 B（RhB）染料和致病性细菌领域的压电活性。在合成和表征之后，进一步使用密度泛函理论（DFT）研究了催化剂的结构和形态特征，这使我们能够估计合成材料的极化率和许多其他重要的电学性质。DFT 研究表明，合成材料具有非常高的极化率和偶极矩，这被用来验证合成材料产生的压电响应。有趣的是，我们发现增强的压电催化降解效率（约 99%）和高速率常数（约 2.259×10-2 min-1），表明了快速和有效的降解过程。在致病性细菌的情况下，降解效率约为 94%。此外，该催化剂的提取非常简单。由于其高剩余磁化强度（矫顽力约 0.08 emu g），催化剂可以通过外部磁场刺激从处理后的水样中提取出来，使其成为可持续废水处理的潜在候选物。
