Fe-Functionalized Activated Carbon-AgI Photocatalyst: A Sustainable Strategy for Efficient Wastewater Remediation

IF 2.5 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2026-10-23 DOI:10.1007/s10562-026-05553-8

Abhineet Singh, Simran Sharma, Sonu Sonu, Pankaj Raizada, Tansir Ahamad, Savas Kaya, Mikhail M. Maslov, Pardeep Singh

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Abstract

For enhancement of visible-light-driven degradation of tetracycline (TCL), this work reports synthesis of a Fe-assisted Fe-AC/AgI nanocomposite which is prepared using a simple co-precipitation approach. Herein, XRD and FESEM analyses confirmed the formation of a well-crystallized material which comprises a stable structural framework along with uniform morphology composed of well-interconnected particles. Whereas, optical and electrochemical characterizations further demonstrate that AgI possesses a suitable, aligned band structure for visible-light activation, and revealing an optical band gap of 2.53 eV. The Fe²⁺ ions introduced effective electron-trapping sites, which helped in the suppression of rapid e⁻/h⁺ recombination and promoted the generation of reactive oxygen species, particularly ⋅OH and ⋅O₂⁻ radicals. These radicals play a decisive role in degradation of TCL. Due to which, the Fe-AC/AgI photocatalyst achieved a notable degradation efficiency of about 89.77% under visible-light irradiation and it also retained its catalytic activity over multiple reuse cycles. Overall, these findings determine that Fe-AC/AgI system is a promising and practical photocatalyst for the wastewater treatment, which offers an efficient strategy for the ultimate removal of pharmaceutical contaminants.

Graphical Abstract

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铁功能化活性炭- agi光催化剂：一种高效废水处理的可持续策略

为了增强四环素（TCL）的可见光降解，本文报道了一种fe辅助Fe-AC/AgI纳米复合材料的合成，该复合材料采用简单的共沉淀法制备。通过XRD和FESEM分析，证实了材料结晶良好，具有稳定的结构框架和均匀的晶粒组成。然而，光学和电化学表征进一步表明，AgI具有适合可见光激活的排列带结构，并且显示出2.53 eV的光学带隙。Fe2+离子引入了有效的电子俘获位点，抑制了e−/h+的快速重组，促进了活性氧的生成，特别是⋅OH和⋅O₂−自由基的生成。这些自由基对TCL的降解起着决定性的作用。因此，Fe-AC/AgI光催化剂在可见光照射下的降解效率达到了89.77%，并且在多次重复使用循环中仍保持了催化活性。综上所述，Fe-AC/AgI系统是一种很有前途的、实用的废水处理光催化剂，为最终去除药物污染物提供了一种有效的策略。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。

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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.