Single walled carbon nanotubes with encapsulated Pt(II) photocatalyst for the oxidation of sulfides in water
A simple one-step synthesis of a heterogeneous photocatalyst based on the encapsulation of the quinolinate-platinum complex 1 in the inner cavity of Single Walled Carbon Nanotubes (Pt1@oSWNT) is presented. This strategy generates a robust and stable catalyst for photooxidations performed in water me...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/703590 |
| Acceso en línea: | http://hdl.handle.net/10486/703590 https://dx.doi.org/10.1016/j.jcat.2022.06.027 |
| Access Level: | acceso abierto |
| Palabra clave: | Carbon nanotubes Encapsulation Photocatalysis Pt(II) complexes Water-reactions Química |
| Sumario: | A simple one-step synthesis of a heterogeneous photocatalyst based on the encapsulation of the quinolinate-platinum complex 1 in the inner cavity of Single Walled Carbon Nanotubes (Pt1@oSWNT) is presented. This strategy generates a robust and stable catalyst for photooxidations performed in water media. Pt1@oSWNT is characterized spectroscopically and microscopically to have encapsulated a 2.5 % wt. of the unaltered complex. This material, which only contained 0.04 mol% of 1, is able to chemoselectively yield a wide variety of sulfoxides in water in the presence of air under 385 nm irradiation. The catalyst also presents affinity for polyaromatic substrates, increasing the reaction rate as a function of the number of condensed rings, achieving turnover frequencies as high as 8187 h−1. Moreover, the heterogeneous catalyst could be recycled for more than six consecutive reaction runs without losing its catalytic activity or detecting catalyst leaching |
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