Bibak Sepideh, Poursattar Marjani Ahmad, Sarreshtehdar Aslaheh Hamideh
Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
Sci Rep. 2024 Aug 5;14(1):18070. doi: 10.1038/s41598-024-69101-3.
We have developed an innovative mesoporous nanocatalyst by carefully attaching a 2-aminothiophenol-Cu complex onto functionalized MCM-41. This straightforward synthesis process has yielded a versatile nanocatalyst known for its outstanding efficiency, recyclability, and enhanced stability. The structural integrity of the nanocatalyst was comprehensively analyzed using an array of techniques, including BET (Brunauer-Emmett-Teller) for surface area measurement, ICP (Inductively Coupled Plasma) for metal content determination, EDS (Energy-Dispersive X-ray Spectroscopy) for elemental mapping, XRD (X-ray Diffraction) for crystalline structure elucidation, SEM (Scanning Electron Microscopy), EMA (Elemental Mapping Analysis), TEM (Transmission Electron Microscopy), TGA (Thermogravimetric Analysis), FT-IR (Fourier Transform Infrared Spectroscopy), AFM (Atomic Force Microscopy), and CV (cyclic voltammetry). Subsequently, the catalytic properties of the newly developed MCM-41-CPTEO-2-aminothiophenol-Cu catalyst was evaluated in the synthesis of biphenyls, demonstrating outstanding yields through a Suzuki coupling reaction between phenylboronic acid and aryl halides. Importantly, this reaction was conducted in an environmentally friendly medium. Note the remarkable recyclability of the catalyst, proving its sustainability over six cycles with minimal loss in activity additionally hot filtration test was prepared to examine the stability of this nanocatalyst. This outstanding feature emphasizes the catalyst's potential for long-term, environmentally conscious catalytic applications.
我们通过将2-氨基苯硫酚-Cu配合物小心地附着在功能化的MCM-41上，开发了一种创新的介孔纳米催化剂。这种简单的合成过程产生了一种多功能纳米催化剂，以其出色的效率、可回收性和增强的稳定性而闻名。使用一系列技术对纳米催化剂的结构完整性进行了全面分析，包括用于表面积测量的BET（布鲁诺尔-埃米特-泰勒）、用于金属含量测定的ICP（电感耦合等离子体）、用于元素映射的EDS（能量色散X射线光谱）、用于晶体结构解析的XRD（X射线衍射）、SEM（扫描电子显微镜）、EMA（元素映射分析）、TEM（透射电子显微镜）、TGA（热重分析）、FT-IR（傅里叶变换红外光谱）、AFM（原子力显微镜）和CV（循环伏安法）。随后，在联苯的合成中评估了新开发的MCM-41-CPTEO-2-氨基苯硫酚-Cu催化剂的催化性能，通过苯基硼酸与芳基卤化物之间的铃木偶联反应证明了出色的产率。重要的是，该反应在环境友好的介质中进行。注意到催化剂具有显著的可回收性，证明其在六个循环中具有可持续性，活性损失最小。此外，还进行了热过滤试验以检查这种纳米催化剂的稳定性。这一突出特点强调了该催化剂在长期、注重环境的催化应用中的潜力。
