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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Tetracarboxyphenylporphyrin-Kaolinite Hybrid Materials as Efficient Catalysts and Antibacterial Agents
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Tetracarboxyphenylporphyrin-Kaolinite Hybrid Materials as Efficient Catalysts and Antibacterial Agents

机译：四羧基苯基卟啉-高岭石杂化材料作为高效催化剂和抗菌剂

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摘要

The preparation, characterization, and application in oxidation reactions and antibacterial activity of new biomimetic heterogeneous materials are reported. Brazilian Sao Simao kaolinite has been functionalized with Fe(III)-[meso-tetrakis(tetracarboxyphenyl)-porphinato], [FeTCPP]. Clay functionalization with FeTCPP was confirmed by the amide bands observed in the FTIR spectrum, while UV~vis spectroscopy revealed a red-shift of the characteristic Soret band of the iron porphyrin compared to the parent iron porphyrin in solution, an evidence of Fe~(III)-porphyrin ->Fe~(II) -porphyrin reduction. Both catalysts reveal complete selectivity for the epoxide in the epoxidation of cis-cyclooctene, while in the Baeyer—Villiger (BV) oxidation of cyclohexanone reached 50% conversion (100% selectivity to ε-caprolactone). The catalysts were recovered and used as antibacterial agents against various bacteria, with activity comparable to that of commercial products such as streptomycin. These results demonstrated that smart multifunctional hybrid organic-inorganic materials that satisfy the demands of Green Chemistry with maximum usability and environmental compatibility can be designed via functionalization of kaolinite.
机译：报道了新型仿生异质材料的制备，表征及其在氧化反应和抗菌活性中的应用。巴西圣思茅高岭石已被Fe（III）-[间-四（四羧基苯基）-卟啉]，[FeTCPP]官能化。 FTIR光谱中观察到的酰胺带证实了FeTCPP对粘土的官能化作用，而紫外可见光谱表明溶液中铁卟啉的特征索雷特谱带与母体卟啉相比具有红移，证明了Fe〜（ III）-卟啉-> Fe〜（II）-卟啉还原两种催化剂均显示出在顺式环辛烯环氧化中对环氧化物的完全选择性，而在Baeyer-Villiger（BV）中环己酮的氧化率达到了50％（对ε-己内酯的选择性为100％）。回收了催化剂并将其用作针对各种细菌的抗菌剂，其活性可与商业产品（如链霉素）相媲美。这些结果表明，可以通过对高岭石进行官能化来设计满足绿色化学要求的，具有最大可用性和环境相容性的智能多功能杂化有机-无机材料。

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