Photocatalytic Evaluation of the Ternary Composite CdSO 4 -ZnAl LDH/ZnS in Hydrogen Production without a Sacrificial Reagent.

Romero-Villegas, Angela G.; Tzompantzi-Flores, Clara; Hernández, Raúl Pérez; Barrera-Rodríguez, Arturo; Tzompantzi, Francisco; Gómez, Ricardo

In this work, a layered double hydroxide support modified with cadmium was synthesized by a one-pot coprecipitation method. Then, it was sulfured in different percentages by a solvothermal method. Next, the samples were analyzed using various characterization techniques like XRD, DRS, FTIR, N2 physisorption, PL spectroscopy, TEM, and SEM. Finally, the synthesized and uncalcined materials were assessed in hydrogen production from water and a methanol-water solution under UV-light irradiation. The results showed that the sulphuration improves the photocatalytic activity, reaching a maximum rate constant of hydrogen production of 7403 µmol/g∙h in a methanol-water solution and 1326 µmol/g∙h in water.

INTERSTITIAL hydrogen generation; LAYERED double hydroxides; PHOTOCATALYSTS; HYDROGEN production; SULFURATION; X-ray diffraction; ZINC sulfide; HYDROXIDES

Catalysts (2073-4344), 2023, Vol 13, Issue 3, p593

2073-4344

Academic Journal

10.3390/catal13030593