Synthesis, characterization, and a comparative study on the catalytic activity of the functionalized magnetic nanoparticles for the green oxidation of sulfides

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-21 DOI:10.1002/jccs.202400119

Saeed Rayati, Mohammad Mazraeh, Saeedeh Shokoohi, Parinaz Nafarieh, Fatemeh Nejabat

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引用次数: 0

Abstract

In the following research, meso-tetrakis(4-carboxyphenyl)porphyrinatomanganese (III) acetate (MnTCPP(OAc)) was immobilized onto the surface of two functionalized magnetic nanoparticles (MNPs) with different linker length via amide bond (Fe₃O₄@SiO₂-NH₂-MnTCPP(OAc) (A¹) and Fe₃O₄@SiO₂-NHCO-NH₂-MnTCPP(OAc) (A²)). The prepared catalysts were characterized by standard methods such as: atomic absorption spectroscopy (AAS), Ultra violet-visible (UV-Vis), Fourier-transform infrared (FT-IR), vibrating sample magnetometry (VSM), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) techniques and also the effect of the length of the linker on the catalytic activity of supported magnetic nanohybrids was investigated. The prepared magnetic nano-catalysts with different linker lengths were participated in a comparative study of the clean oxidation of sulfides with urea hydrogen peroxide (UHP) in ethanol. The higher catalytic activity, selectivity and also reusability were achieved in the presence of the catalyst with longer linker length (A²) at ambient temperature. Moreover, the turnover number (TON) of catalytic reactions using A² as catalyst was highly enough to consider the catalyst as an efficient material to oxidize various sulfides. Both A¹ and A² catalysts simply have accomplished 5 runs of recycling without significant decrease in the catalytic activity.

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用于硫化物绿色氧化的功能化磁性纳米粒子的合成、表征和催化活性比较研究

在接下来的研究中，中四(4-羧基苯基)卟啉锰(III)醋酸盐（MnTCPP(OAc)）通过酰胺键被固定在两种具有不同连接长度的功能化磁性纳米粒子（MNPs）（Fe3O4@SiO2-NH2-MnTCPP(OAc) (A1)和Fe3O4@SiO2-NHCO-NH2-MnTCPP(OAc) (A2)）表面。制备的催化剂采用标准方法进行了表征，如原子吸收光谱（AAS）、紫外可见光（UV-Vis）、傅立叶变换红外（FT-IR）、振动样品磁力计（VSM）、场发射扫描电子显微镜（FE-SEM）和透射电子显微镜（TEM）技术，并研究了链接长度对支撑磁性纳米杂交催化活性的影响。所制备的具有不同链接长度的磁性纳米催化剂参与了乙醇中硫化物与脲过氧化氢（UHP）清洁氧化的比较研究。在常温下，链接长度较长的催化剂（A2）具有更高的催化活性、选择性和可重复使用性。此外，使用 A2 作为催化剂进行催化反应的周转次数（TON）也很高，足以说明该催化剂是一种氧化各种硫化物的高效材料。A1 和 A2 催化剂都能简单地完成 5 次循环，而催化活性没有明显下降。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.