Simple Synthesis and Characterization of Cobalt Ferrite Nanoparticles for the Successful Adsorption of Indigo Carmine Dye from Aqueous Media

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2023-11-24 DOI:10.3390/inorganics11120453

A. Al-Wasidi, Ehab A. Abdelrahman

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Abstract

Indigo carmine dye falls into the category of toxic chemicals, potentially leading to irritation and allergic reactions in certain individuals. Thus, this study employed the Pechini sol–gel strategy to easily produce CoFe2O4 nanoparticles, which serve as an effective adsorbent for the disposal of indigo carmine dye from aqueous solutions. The maximum adsorption capacity of CoFe2O4 for indigo carmine dye was determined to be 421.94 mg/g. The synthesized CoFe2O4 nanoparticles exhibited an average crystallite size of 18.75 nm. SEM analysis revealed that these nanoparticles were nearly spherical, with an average grain size of 198.32 nm. Additionally, TEM analysis indicated a fully agglomerated spherical morphology for the CoFe2O4 sample, with an average diameter of 15.37 nm. The EDS spectrum confirmed that the synthesized CoFe2O4 nanoparticles consisted of Co, Fe, and O elements, with respective weight percentages of 17.82%, 49.46%, and 32.72%. The removal of indigo carmine dye by the synthesized CoFe2O4 is spontaneous, chemical, exothermic, closely fitting the pseudo-second-order kinetic model, and demonstrating a strong concordance with the Langmuir equilibrium isotherm.

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成功吸附水介质中靛蓝胭脂红染料的钴铁氧体纳米粒子的简单合成与表征

靛胭脂虫染料属于有毒化学品，可能会对某些人产生刺激和过敏反应。因此，本研究采用 Pechini 溶胶凝胶法轻松制备出 CoFe2O4 纳米粒子，并将其作为一种有效的吸附剂从水溶液中去除靛胭脂红染料。经测定，CoFe2O4 对靛蓝胭脂红染料的最大吸附容量为 421.94 mg/g。合成的 CoFe2O4 纳米粒子的平均结晶尺寸为 18.75 nm。扫描电镜分析表明，这些纳米粒子接近球形，平均晶粒大小为 198.32 nm。此外，TEM 分析表明 CoFe2O4 样品呈完全团聚的球形形态，平均直径为 15.37 nm。EDS 光谱证实，合成的 CoFe2O4 纳米粒子由 Co、Fe 和 O 元素组成，重量百分比分别为 17.82%、49.46% 和 32.72%。合成的 CoFe2O4 对靛蓝胭脂红染料的去除是自发的、化学的、放热的，非常符合假二阶动力学模型，并且与 Langmuir 平衡等温线非常吻合。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD