Riboflavin and Eosin Y Supported on Chromatographic Silica Gel as Heterogeneous Photocatalysts

RIMONDINO, GUIDO N.

ACS Omega

ACS

Año: 2023

2470-1343

he application of photocatalysis for organic synthesis, both in the laboratory and on an industrial scale, will depend on the achieving of good yields and the ease with which it can be applied. Selective irradiation of the photocatalyst with LED light has made it possible to activate the reactions easily, without the need for UV or heat filters. However, a common problemis the need to separate the photocatalyst from the reaction products through extraction and chromatography isolation processes.These procedures make it difficult to recover and reuse the catalyst, which is not compatible with scale-up applications. Photocatalysts attached to heterogeneous supports resulted in an alternative, which facilitates their removal and reuse. In this study, we use chromatographic silica gel as a low-cost heterogeneous support to bind photosensitizers such as Riboflavinor Eosin Y. The modified silica gel was analyzed by FTIR-ATR and diffuse reflectance, UV−visible spectroscopy, thermo grav