BaFe12O19纳米片对RR195染料的光催化性能研究

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-08-22 DOI:10.1016/j.mseb.2025.118716

Juan A. Ramos-Guivar , Yamerson Canchanya-Huaman , Angie F. Mayta-Armas , Renzo Rueda-Vellasmin , Yéssica Bendezú-Roca , Noemi-Raquel Checca-Huaman , Edson Caetano Passamani

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引用次数: 0

摘要

单相磁铅石（M−型）钡六铁素体（BaFe12O19）的合成仍然具有挑战性，特别是在纳米尺度上。本研究通过溶胶-凝胶自燃烧（SGA）和共沉淀法（CP）制备纯BaFe12O19，采用化学计量Ba/Fe比（1/12），并在650-950℃之间退火。制备了6个（SGA）和4个（CP）样品。x射线衍射图的Rietveld细化在950°C下使用SGA路线（R12-SGA3）证实了晶粒尺寸为73(6)nm的单相BaFe12O19。透射电镜分析显示纳米血小板具有低团聚和良好分散的特点。采用Box-Behnken设计优化光催化性能，在催化剂剂量0.89 g L-1、照射时间1.03 h、染料浓度10.03 mg L-1的最佳条件下，活性红195染料在可见光下的降解率为97%。模型具有较强的相关性（R2 = 0.944），验证了优化的有效性。BaFe12O19催化剂还表现出优异的可重复使用性，在4个循环后仍保持90%的效率，表明其在环境修复方面的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Design and photocatalytic performance of BaFe12O19 nanoplatelets for RR195 dye

查看原文本刊更多论文

Design and photocatalytic performance of BaFe12O19 nanoplatelets for RR195 dye

The synthesis of single-phase magneto-plumbite (M−type) Ba-hexaferrite (BaFe₁₂O₁₉) remains challenging, particularly at nano scale. This study investigates the formation of pure BaFe₁₂O₁₉ via sol–gel autocombustion (SGA) and coprecipitation (CP) methods, using a stoichiometric Ba/Fe ratio (1/12) and annealing between 650–950 °C. Six (SGA) and four (CP) samples were prepared. Rietveld refinement of X-ray diffraction patterns confirmed single-phase BaFe₁₂O₁₉ with 73(6) nm crystallite size at 950 °C using the SGA route (R12-SGA3). Transmission electron microscopy analysis revealed nanoplatelet morphology with low agglomeration and good dispersion. Photocatalytic performance, optimized using Box–Behnken design, showed 97% degradation of reactive red 195 dye under visible light at optimal conditions: 0.89 g L^–1 catalyst dose, 1.03 h irradiation, and 10.03 mg L^–1 dye concentration. The model exhibited strong correlation (R² = 0.944), validating the optimization. The BaFe₁₂O₁₉ catalyst also exhibited excellent reusability, maintaining > 90% efficiency after four cycles, indicating its promise for environmental remediation applications.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.