Influence of Nickel Doping on the Photocatalytic Activity of Strontium Barium Ferrite for the Degradation of Atrazine under Photon-Fenton System

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-04-19 DOI:10.1007/s10562-025-05009-5

Muhammad Yasar, Aseel A. Kadhem, Fuad M. Alzahrani, Kinza Fatima, Aminjon Kalandarov, Achilova Liliya, Muhammad Muntazir Mehdi, Khalid J. Alzahrani, Muhammad Madni

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Abstract

The widespread contamination of water bodies with atrazine, a persistent herbicide, poses significant environmental and health risks, necessitating efficient treatment methods. In this study, Ni-doped Sr_0.8−xBa_0.2Fe₂O₄ (X = 0, 0.2, 0.4, 0.6) ferrite nanoparticles were synthesized via the sol–gel method for the photocatalytic degradation of atrazine. XRD analysis confirmed the successful formation of the spinel ferrite structure, with crystallite sizes decreasing from 37.4391 to 24.506 nm upon Ni doping. FTIR spectroscopy revealed systematic shifts in metal–oxygen vibration bands, while BET analysis showed maximum surface area (31.54 m²/g) at x = 0.4. The band gap decreased from 2.19 to 1.95 eV with optimal Ni doping (x = 0.4), enhancing visible light absorption. Photodegradation studies demonstrated complete atrazine removal within 75 min using Ni_0.4Sr_0.4Ba_0.2F_e2O₄ under visible-light irradiation. The degradation efficiency was influenced by various parameters, including pH, catalyst dosage, temperature, and H₂O₂ concentration. The scavenger analysis identified hydroxyl radicals (HO*) as the primary active species in the degradation mechanism. The catalyst exhibited excellent recyclability and maintained 94.23% efficiency after five cycles. Kinetic studies revealed that degradation followed first-order reaction kinetics (R² = 0.97951). The superior photocatalytic performance of Ni_0.4Sr_0.4Ba_0.2F_e2O₄, achieved with a minimal catalyst loading (0.01 mg), makes it a promising material for environmental remediation applications.

Graphical Abstract

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镍掺杂对锶钡铁氧体光催化降解阿特拉津的影响

阿特拉津（一种持久性除草剂）对水体的广泛污染对环境和健康构成了重大风险，因此需要高效的处理方法。本研究采用溶胶-凝胶法合成了掺镍的 Sr0.8-xBa0.2Fe2O4（X = 0、0.2、0.4、0.6）铁氧体纳米粒子，用于光催化降解阿特拉津。XRD 分析证实了尖晶石铁氧体结构的成功形成，掺杂镍后结晶尺寸从 37.4391 nm 减小到 24.506 nm。傅立叶变换红外光谱显示了金属-氧振动带的系统移动，而 BET 分析则显示了 x = 0.4 时的最大表面积（31.54 m2/g）。最佳掺杂镍浓度（x = 0.4）时，带隙从 2.19 eV 降至 1.95 eV，从而增强了对可见光的吸收。光降解研究表明，在可见光照射下，使用 Ni0.4Sr0.4Ba0.2Fe2O4 可在 75 分钟内完全去除阿特拉津。降解效率受多种参数的影响，包括 pH 值、催化剂用量、温度和 H2O2 浓度。清除剂分析表明，羟基自由基（HO*）是降解机制中的主要活性物种。催化剂具有良好的可回收性，在五个循环后仍能保持 94.23% 的效率。动力学研究表明，降解遵循一阶反应动力学（R2 = 0.97951）。Ni0.4Sr0.4Ba0.2Fe2O4 在催化剂负载量极小（0.01 毫克）的情况下就能实现卓越的光催化性能，使其成为一种很有前景的环境修复应用材料。图文摘要

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.