Photoreduction of carbon dioxide by graphene–titania and zeolite–titania composites under low-intensity irradiation |
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| Affiliation: | 1. Graduate Institute of Environmental Engineering, National Taiwan University, Taiwan;2. College of the Environment & Ecology, Xiamen University, Xiamen City, Province of Fujian, China;3. Department of Environmental Engineering, National I-Lan University, Taiwan;1. Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt;2. Physics Department, Faculty of Science, King Faisal University, Al-Hassa 31982, P.O. 400, Saudi Arabia;3. Physics Department, Faculty of Education, Aden University, Lodar, Yemen;1. Central Laboratory of Solar Energy and New Energy Sources, Bulgarian Academy of Sciences, blvd. Tzarigradsko chaussee 72, Sofia, Bulgaria;2. Institute of Electronics, Bulgarian Academy of Sciences, blvd. Tzarigradsko chaussee 72, Sofia, Bulgaria;1. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México. A.P. 70-360, Coyoacán, C.P. 04510 México, D.F., Mexico;2. Grupo de Investigación en Desarrollo Tecnológico, Mecatrónica y Agroindustria (GIDETECHMA), Facultad de Ingeniería Mecánica, Universidad Pontificia Bolivariana de Bucaramanga. Km. 7 via a Piedecuesta, Floridablanca, Colombia;3. Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas, Instituto Politécnico Nacional, Av. I.P.N. 2580, Gustavo A. Madero, 07340 México, D.F., Mexico;4. Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA;5. Departamento de Física, Universidad Autónoma Metropolitana, AP 55-534, CP 09340 México, D.F., Mexico;6. Departamento de Física, Centro de Investigación y Estudios Avanzados del IPN, CP 07360, México, D.F., Mexico;1. Materials Science and Engineering, University of Arizona, Tucson, AZ, USA;2. Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA;3. Applied Materials, Inc., Santa Clara, CA, USA |
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| Abstract: | As it is the most important of the greenhouse gases, the utilization and reduction of carbon dioxide have attracted a great attention. As compared to the technological demands for carbon capture and storage (CCS), carbon dioxide reduction is a safe and effective way to convert carbon dioxide to fuel. In this research, two different catalysts, graphene–titania and zeolite–titania, are used to achieve the carbon dioxide reduction. The characteristics of these materials are analyzed by Brunnauer–Emmett–Teller, X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet–visible, scanning electron microscope and transmission electron microscopy. Because of the different features of the catalysts, various products can be generated through different pathways. Formic acid and methanol are the final products when graphene is used as the catalyst, but only methanol can be generated when zeolite–titania is used as the catalyst. The reaction mechanisms and pathways are discussed. |
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| Keywords: | Graphene–titania zeolite–titania carbon dioxide reduction Mechanism |
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