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The preparation of new palladium (II) complexes with Schiff base type ligands and its impregnated Al2O3 materials: As the catalysts for degradation/reduction of organic dyes
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-09-08 , DOI: 10.1002/aoc.6009
Gizem Selvi 1 , Melek Tercan 1 , Namık Özdemir 2 , Osman Dayan 1
Affiliation  

The removal of organic dyes used in many sectors such as textile, paper, leather, and packaging from water sources is very important in terms of preventing the spread of industrial pollutants to the environment. Transition metal complexes supported to an inorganic solid material are frequently used for the degradation/reduction of organic dyes causing this pollution. In this study, new Pd (II) complexes with Schiff base ligands were synthesized and structurally characterized by nuclear magnetic resonance (NMR), Fourier‐transform infrared spectroscopy (FT‐IR), mass spectrometry (MS), and single‐crystal X‐ray diffraction (sc‐XRD) spectroscopic methods. Then, the Al2O3‐impregnated materials of these Pd (II) complexes were prepared and characterized by scanning electron microscopy with energy dispersive X‐ray analysis (SEM‐EDX), FT‐IR, and thermogravimetry (TG) techniques. The catalytic activities of the synthesized Pd (II) complexes and their Al2O3‐impregnated materials were comparatively analyzed to investigate the degradation/reduction of organic dyes (2‐nitroaniline, 4‐nitroaniline, 4‐nitrophenol, eosin yellow, and methylene blue). The catalytic results indicate that Al2O3‐impregnated materials are very active catalysts for the degradation/reduction of organic dyes under those circumstances. Conversions of up to 98% for all substrates were obtained after 5 min at ambient temperature.

中文翻译:

带有席夫碱型配体的新型钯(II)配合物及其浸渍的Al2O3材料的制备:作为降解/还原有机染料的催化剂

从防止工业污染物向环境中扩散的角度来看,从水源中去除纺织,纸张,皮革和包装等许多行业中使用的有机染料非常重要。负载在无机固体材料上的过渡金属络合物通常用于降解/还原导致这种污染的有机染料。在这项研究中,合成了具有Schiff碱配体的新Pd(II)配合物,并通过核磁共振(NMR),傅立叶变换红外光谱(FT-IR),质谱(MS)和单晶X-射线衍射(sc‐XRD)光谱方法。然后,Al 2 O 3制备了这些Pd(II)配合物的浸渍材料,并通过扫描电子显微镜,能量色散X射线分析(SEM-EDX),FT-IR和热重分析(TG)技术对其进行了表征。比较分析了合成的Pd(II)配合物及其Al 2 O 3浸渍材料的催化活性,以研究有机染料(2-硝基苯胺,4-硝基苯胺,4-硝基苯酚,曙红黄和亚甲基)的降解/还原。蓝色)。催化结果表明,在这些情况下,Al 2 O 3浸渍材料是用于有机染料降解/还原的非常活泼的催化剂。在室温下5分钟后,所有基材的转化率均高达98%。
更新日期:2020-11-06
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