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Preparation of efficient cadmium sulfide nanofibers for hydrogen production using ethylenediamine (NH2CH2CH2NH2) as
Agileo Hernández-Gordillo1, Socorro Oros-Ruiz2, Ricardo Gómez2
1Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior SN, Ciudad Universitaria, CP 04510 México, D.F., Coyoacán, Mexico.
Abstract:
The preparation of CdS was performed by the precipitation method using ethylenediamine as template and tetrahydrofuran, acetonitrile or butanol as organic solvents. The formation of CdS with hexagonal structure was observed by XRD due to the template effect. FTIR studies showed that the amount of the template linked to the surface of the CdS depends on the organic solvent used. TEM observations evidenced the formations of CdS nanofibers and the EDS analysis show the chemical composition of the surface. The photocatalytic activity of CdS nanofibers under blue light irradiation was strongly influenced by the amount of ethylenediamine template on the nanofiber surface. It was observed that when the amount of the template on the samples diminishes by the heat treatment, the photocatalytic activity is affected. The role of the ethylenediamine template in the mechanism for the H2 production reaction is discussed.
