Vol. 12, Issue 4 (2024)
Metal-enhanced CdZnS photocatalysts for hydrogen evolution
Author(s): Fouad Warid Mezaal
Abstract: Me/Cd 0.3 Zn 0.7 S (Me = Au, Pt, and Pd) photo catalysts were studied for their photocatalytic activity and stability in hydrogen evolution processes under visible light. Using experimental techniques, including x-ray phase analysis, transparent electronic microscopy, and x-ray photoelectron spectroscopy, the activation and deactivation processes of catalysis were detailed for the first time. tori. All samples subjected to the first round of testing showed an enhanced release rate of hydrogen. The highest rate of hydrogen evolution (5.4 mol/min) was achieved using a catalyst consisting of 1%Pt/Cd/0.3 Zn/0.7 S. The photocatalytic activity of the Au/Cd/0.3 Zn/0.7 S and Pt/Cd/0.3 Zn/0.7 S catalysts was shown to be stable after 7.5-9 hours of testing. However, when the Pd/Cd 0.3 Zn 0.7 S sample was exposed to the environment, the rate of hydrogen evolution increased for six hours before beginning to decline. Metals thought to have been originally present on the carrier surface are likely responsible for these features. At particular, PdO, white gold, and platinum were found to exist in metallic state academic institutions. Aggregation of cadmium and zinc sulfide nanoparticles in a solid solution leads to the inactivation of a 1%Pd/Cd 0.3 Zn 0.7 S sample. Whatever photo catalysts were demonstrated to be same Behind-the-scenes encapsulating metals Au/Cd 0.3 Zn 0.7 S and Pt/Cd 0.3 Zn 0.7 S are active, and 1%Pd/Cd 0.3 Zn 0.7 S - partial recovery PdO is sampled.
Pages: 104-112 | 93 Views 37 Downloads
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How to cite this article:
Fouad Warid Mezaal. Metal-enhanced CdZnS photocatalysts for hydrogen evolution. Int J Chem Stud 2024;12(4):104-112.
