A palladium complex immobilized onto a magnetic GO-MnFe2O4 surface as an effective and recyclable catalyst for the reduction of p-nitrophenol,Dalton Transactions

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A palladium complex immobilized onto a magnetic GO-MnFe2O4 surface as an effective and recyclable catalyst for the reduction of p-nitrophenol
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-02-07 00:00:00 , DOI: 10.1039/c7dt04669c
Kazem Karami _{1,

2,

3,

4} , Neda Sadat Mousavi _{1,

2,

3,

4}

Affiliation

A magnetically separable palladium complex on a GO-MnFe₂O₄ surface has been synthesized by covalent immobilization of a palladium complex on the magnetic GO-MnFe₂O₄ surface functionalized with 3-aminopropyltriethoxysilane (APTES). In general, magnetic, iron based materials (MnFe₂O₄) are effective in many catalytic reactions and are advantageous compared with other metal oxides due to their magnetic recyclability. The catalytic activities of these nanohybrids have been studied in p-nitrophenol (p-Nip) reduction. Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), inductively coupled plasma atomic emission spectrometry (ICP-AES), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDAX) and transmission electron microscopy (TEM) were used to characterize the catalyst. The successful incorporation of the palladium complex onto GO-MnFe₂O₄ has been confirmed by FT-IR spectroscopy, thermogravimetric analysis and ICP-AES. The intact structure of GO-MnFe₂O₄ was verified by X-ray diffraction (XRD), energy dispersive X-ray analysis (EDAX) and TEM. The strong reduction of p-nitrophenol was shown by the palladium complex on GO-MnFe₂O₄. This magnetic heterogeneous catalyst was well recoverable with no significant loss of activity and selectivity after five successive runs.

中文翻译：

固定在GO-MnFe ₂ O ₄磁性表面上的钯配合物，作为一种有效的可循环使用的催化剂，用于还原对硝基苯酚

通过将钯配合物共价固定在用3-氨基丙基三乙氧基硅烷（APTES）功能化的GO-MnFe ₂ O ₄磁性表面上，可以合成GO-MnFe ₂ O ₄表面上的磁性可分离钯配合物。通常，磁性，铁基材料（MnFe ₂ O ₄）在许多催化反应中均有效，并且由于其磁性可循环性而与其他金属氧化物相比是有利的。已经研究了这些纳米杂化物在对硝基苯酚中的催化活性（p-Nip）减少。傅里叶变换红外（FT-IR）光谱，热重分析（TGA），电感耦合等离子体原子发射光谱（ICP-AES），X射线衍射（XRD），能量色散X射线分析（EDAX）和透射电子显微镜（ TEM）表征催化剂。通过FT-IR光谱，热重分析和ICP-AES证实了钯配合物成功地掺入GO-MnFe ₂ O ₄中。GO-MnFe ₂ O ₄的完整结构通过X射线衍射（XRD），能量色散X射线分析（EDAX）和TEM进行了验证。钯配合物在GO-MnFe ₂ O ₄上显示出对硝基苯酚的强烈还原。连续运行五次后，这种磁性非均相催化剂可很好地回收，而活性和选择性没有明显损失。

更新日期：2018-02-07

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