Corrigendum to “Selective photocatalytic conversion of guaiacol using g-C3N4 metal free nanosheets photocatalyst to add-value products” [J. Photochem. Photobiol. A: Chem. 421 (2021) 113513]

Role of Nb2O5 Crystal Phases on the Photocatalytic Conversion of Lignin Model Molecules and Selectivity for Value‐Added Products

“…Previous reports have shown that guaiacol photocatalytic oxidation may occur through different mechanisms involving reactive oxygen species such as ⋅OH, O 2 ⋅ − and ⋅OOH, among others [13,68–70] . Conversion rates shown in Table 4 indicate that photocatalytic conversion of guaiacol relays in more than one reactive oxygen species.…”

“…This work achieved up to 25 % and 55 % conversion of phenol and guaiacol respectively, by selective photocatalytic oxidation in aqueous media [13,29,30] . Product selectivity was controlled by the dominant crystallite on the photocatalyst.…”

“…Phenol is a toxic and photostable compound abundant in lignin structure, and due to its simple structure with only one hydroxyl group, it is commonly used as a model to understand the reaction mechanism [2] . Guaiacol contains hydroxyl and methoxy functional groups simultaneously, which are the main functional elements in the lignin matrix [13] . Therefore, the study of both phenol and guaiacol will give a good understanding of the reaction mechanism for the most common linkage structures in lignin.…”