Unraveling the trade-off: Enhanced photocatalytic H2 production vs. degradation in ZnS hybrids under prolonged UV-sonication
Por:
Cerezo Durán L., Hernández-Gordillo A., Bizarro M., Boujnah M., Muñiz J., Muñoz Saldaña J., Rodil S.E.
Publicada:
1 ene 2025
Resumen:
This study investigates the impact of prolonged UV irradiation-sonication treatment on the structural, surface, and photocatalytic properties of ZnS(en)0.5 hybrid nanosheets. We demonstrate a significant enhancement in photocatalytic hydrogen evolution (HER) activity with increasing treatment duration, attributed to in-situ exfoliation, which leads to an increased number of active sites. However, this improvement is counterbalanced by progressive degradation of the organic component, evidenced by ex-situ exfoliation and surface modifications such as hydroxylation, sulfation, and carbonation. While initial cycles exhibit a remarkable 3-fold enhancement in intrinsic HER, prolonged UV exposure ultimately leads to deactivation due to the accumulation of impurities and the loss of active sites. This work highlights the critical trade-off between enhanced photocatalytic activity and material degradation in hybrid systems, providing crucial insights for the development of stable and efficient photocatalysts for sustainable hydrogen production. © 2025 Hydrogen Energy Publications LLC
Filiaciones:
Cerezo Durán L.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior SN, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, Mexico
Hernández-Gordillo A.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior SN, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, Mexico
Bizarro M.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior SN, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, Mexico
Boujnah M.:
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-Querétaro), Libramiento Norponiente 2000, Fracc. Real de Juriquilla, Querétaro, 76230, Mexico
Muñiz J.:
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, Morelos, Temixco, CP 62580, Mexico
Muñoz Saldaña J.:
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-Querétaro), Libramiento Norponiente 2000, Fracc. Real de Juriquilla, Querétaro, 76230, Mexico
Rodil S.E.:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior SN, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, Mexico
|