Scholarlink

<p>In this study, magnetic SBA-15 nanoparticles were synthesized. The CoFe<sub>2</sub>O<sub>4</sub>/SBA-15 nanoparticles were modified by 3-chloropropyltrimethoxysilane. Then, a Gadolinium (Gd) dithizone complex on CoFe<sub>2</sub>O<sub>4</sub>/SBA-15 was synthesized by anchoring Gadolinium ions on the CoFe<sub>2</sub>O<sub>4</sub>/SBA-15/dithizone composite. The prepared material was characterized using powder X-ray diffraction (XRD), field emission scanning electron microscopy/ energy dispersive X-ray spectroscopy (SEM/EDX), elemental mapping, vibrating-sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), and nitrogen adsorption–desorption isotherm. The CoFe<sub>2</sub>O<sub>4</sub>/SBA-15/dithizone/Gd composite consists of a mesoporous structure with a surface area by BET and t-plot of 122.2&#xa0;m<sup>2</sup>/g and 86.28&#xa0;m<sup>2</sup>/g respectively, with a mean pore size of 5.37&#xa0;nm, and pore volume of 0.164&#xa0;cm<sup>3</sup>/g. The CoFe<sub>2</sub>O<sub>4</sub>/SBA-15/dithizone/Gd composite was successfully applied as a powerful catalyst for green synthesis of 5-substituted 1<i>H</i>-tetrazoles in water. This catalyst was recovered and reused several times without a significant decrease in efficiency and stability. The catalyst could be fully recovered by an external magnetic field and it showed good reusability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Gd (III) complex supported functionalized magnetic mesoporous silica particles as an efficient and recoverable novel catalyst in the synthesis of 5-substituted 1H-tetrazoles in green media

  • 期刊论文

  • 发表日期：

    2025年4月19日

查看全文
  • Somayeh Molaei,
  • Mohammad Ghadermazi

摘要

In this study, magnetic SBA-15 nanoparticles were synthesized. The CoFe2O4/SBA-15 nanoparticles were modified by 3-chloropropyltrimethoxysilane. Then, a Gadolinium (Gd) dithizone complex on CoFe2O4/SBA-15 was synthesized by anchoring Gadolinium ions on the CoFe2O4/SBA-15/dithizone composite. The prepared material was characterized using powder X-ray diffraction (XRD), field emission scanning electron microscopy/ energy dispersive X-ray spectroscopy (SEM/EDX), elemental mapping, vibrating-sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), and nitrogen adsorption–desorption isotherm. The CoFe2O4/SBA-15/dithizone/Gd composite consists of a mesoporous structure with a surface area by BET and t-plot of 122.2 m2/g and 86.28 m2/g respectively, with a mean pore size of 5.37 nm, and pore volume of 0.164 cm3/g. The CoFe2O4/SBA-15/dithizone/Gd composite was successfully applied as a powerful catalyst for green synthesis of 5-substituted 1H-tetrazoles in water. This catalyst was recovered and reused several times without a significant decrease in efficiency and stability. The catalyst could be fully recovered by an external magnetic field and it showed good reusability.