锌掺杂对溶胶-凝胶衍生尖晶石铁氧体光降解四环素结构、光学和光催化性能的协同效应

IF 2.3 4区 化学 Q3 CHEMISTRY, PHYSICAL
M. Hisham Al Nasir, Muhammad Yasar, Abdul Maajid Khokhar, Kinza Fatima, Muzaffar Abbas, Mahrukh Ali, Faiz Mahmood, Khalid S. Almaary, Tawaf Ali Shah, Devendra Pratap Rao
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引用次数: 0

摘要

药物污染,特别是水生环境污染,对全球环境构成重大挑战。本研究采用掺杂锌的锶镁铝铁氧体(ZnxSr0.7−xmg0.3 al0.1 fe1.90 o4, (x = 0,0.3))纳米粒子光催化脱除四环素。我们使用复杂的溶胶-凝胶合成方法成功地设计了具有增强结构和光催化性能的光催化剂。与未掺杂的材料相比,掺杂锌的材料表现出显著的改进。关键的结构变化包括晶体尺寸减小(从35.55 nm到27.55 nm),表面积显著增加(从6.63 m2/g到32.14 m2/g),带隙缩小(从2.7 eV到2.4 eV)。这些修饰直接转化为优异的光催化性能,四环素降解效率从73.67提高到98.43%。机理研究表明,羟基自由基的存在是主要的降解机制,一级动力学控制反应。该催化剂表现出优异的稳定性,在连续5次循环后仍保持93.45%的降解效率。量子效率提高了34%,突出了战略金属掺杂在增强光催化材料方面的潜力。该研究为制药污染修复提供了一种有前景的策略,并为环境应用的先进材料设计提供了见解。锌掺杂尖晶石铁氧体代表了高效可回收水处理光催化剂的重大进展。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Synergistic Effect of Zn Doping on the Structural, Optical, and Photocatalytic Properties of Sol–Gel Derived Spinel Ferrite for Tetracycline Photodegradation

Synergistic Effect of Zn Doping on the Structural, Optical, and Photocatalytic Properties of Sol–Gel Derived Spinel Ferrite for Tetracycline Photodegradation

Pharmaceutical pollution, particularly contamination of aquatic environments, poses a significant global environmental challenge. This study introduces a novel photocatalytic approach for tetracycline removal using zinc-doped strontium magnesium aluminum ferrite (ZnxSr0.7−xMg0.3Al0.1Fe1.9O4, (x = 0, 0.3)) nanoparticles. We successfully engineered photocatalysts with enhanced structural and photocatalytic properties using a sophisticated sol–gel synthesis method. The zinc-doped material demonstrated remarkable improvements compared to its undoped counterpart. The key structural modifications included a reduced crystallite size (from 35.55 nm to 27.55 nm), significantly increased surface area (from 6.63 m2/g to 32.14 m2/g), and a narrowed bandgap (from 2.7 eV to 2.4 eV). These modifications directly translated into superior photocatalytic performance, with the tetracycline degradation efficiency increasing from 73.67 to 98.43%. Mechanistic investigations revealed the presence of hydroxyl radicals as the primary degradation mechanism, with first-order kinetics governing the reaction. The catalyst demonstrated exceptional stability, maintaining 93.45% degradation efficiency after five consecutive cycles. The quantum efficiency was improved by 34%, highlighting the potential of strategic metal doping for enhancing photocatalytic materials. This study provides a promising strategy for pharmaceutical pollution remediation and offers insights into advanced material design for environmental applications. Zinc-doped spinel ferrite represents a significant advancement in the development of efficient recyclable photocatalysts for water treatment.

Graphical abstract

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来源期刊
Catalysis Letters
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.
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