Photocatalytic activity of cobalt-doped Cd1-xAl0.2Fe1.8O4 (0,0.3) spinel ferrite for atrazine degradation

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2025-02-19 DOI:10.1007/s11144-025-02811-5

Gabriel Rodríguez-Ortiz, Aseel A. Kadhem, Kinza Fatima, Allah Nawaz Aqeel, Mounir M. Bekhit, Muhammad Furqan, Atif Mujtaba, Tehreem Manzoor, Muhammad Yasar

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Abstract

This study investigated the photocatalytic degradation of atrazine using cobalt-doped Cd_1-xAl_0.2Fe_1.8O₄ spinel ferrites. Cobalt doping significantly enhances the structural, optical, and photocatalytic properties of ferrites, leading to improved atrazine degradation efficiency. Characterization techniques revealed that Co doping reduced the bandgap, increased the surface area, and altered the particle morphology. The Co_0.3Cd_0.7Al_0.2Fe_1.8O₄ catalyst achieved 97.21% atrazine degradation within 60 min under the following conditions: pH 7, catalyst dosage 20 mg/L, atrazine concentration 10 ppm, temperature 30 °C, and light intensity 100 W. Cobalt doping reduced the bandgap from 2.5 eV for undoped Cd_1-xAl_0.2Fe_1.8O₄ to 2.0 eV Scavenger studies indicated that hydroxyl radicals and superoxide radicals are the primary reactive oxygen species involved in atrazine degradation. These findings demonstrate the potential of cobalt-doped Cd_1-xAl_0.2Fe_1.8O₄ spinel ferrites as photocatalysts for the effective removal of atrazine from water.

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钴掺杂cd1 - xal0.2 fe1.80 o4（0,0.3）尖晶石铁氧体对阿特拉津降解的光催化活性

本文研究了钴掺杂Cd1-xAl0.2Fe1.8O4尖晶石铁氧体光催化降解阿特拉津的方法。钴的掺杂显著提高了铁氧体的结构、光学和光催化性能，从而提高了阿特拉津的降解效率。表征技术表明，Co掺杂减小了带隙，增加了比表面积，并改变了颗粒形态。在pH为7、催化剂用量为20 mg/L、阿特拉津浓度为10 ppm、温度为30℃、光照强度为100 W的条件下，Co0.3Cd0.7Al0.2Fe1.8O4催化剂在60 min内对阿特拉津的降解率达到97.21%。钴掺杂使未掺杂的Cd1-xAl0.2Fe1.8O4的带隙从2.5 eV减小到2.0 eV。清除剂研究表明，羟基自由基和超氧自由基是参与阿特拉津降解的主要活性氧。这些发现证明了钴掺杂Cd1-xAl0.2Fe1.8O4尖晶石铁氧体作为光催化剂的潜力，可以有效地去除水中的阿特拉津。

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

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.