Enhanced blue-light photocatalytic H2 production using CdS nanofiber |
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| Affiliation: | 1. CIIEMAD, Instituto Politécnico Nacional, Barrio la Laguna Ticomán C.P. 07340 México, D.F. México;2. Universidad Autónoma Metropolitana-Iztapalapa, Depto. de Química, Área de Catálisis, Grupo ECOCATAL, Av. San Rafael Atlixco No 189, México 09340, D.F. México;3. Departamento de Ecomateriales Energía, Facultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, Av. Universidad y Av. Fidel Velásquez S/N, Cd. Universitaria, San Nicolás de los Garza, Nuevo León 66451, México |
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| Abstract: | The photocatalytic activity of CdS nanosphere, nanorod or nanofiber was investigated for the hydrogen production from either methanol–water or sulfide/sulfite solution irradiated with blue light. The nanostructured CdS were obtained by the precipitation method at high ethylenediamine content solutions and at moderate temperature conditions. The synthesized CdS nanofiber using CS2 as sulfur source presented the highest photocatalytic activity for the H2 production (954 μmol h− 1 g− 1) in the reaction system with four blue LED lamps. This high photoactivity was attributed to the quantum confinement effect generated by the small particle size of the nanofibers (D = ~ 5 nm and L = 25 nm). |
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