Sodium/lithium 3d transition metalates for chemisorption of gaseous pollutants: a review |
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Institution: | 1. Department of Environmental Research, University of Science and Technology (UST), Daejeon 34113, Korea;2. Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, Korea;3. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México Circuito Exterior S/n, Ciudad Universitaria, Del. Coyoacán, CP 04510, Ciudad de México, Mexico;4. Homi Bhabha National Institute, Anushaktinagar, Mumbai, India;5. Chemistry Division, Bhabha Atomic Research Centre, Mumbai, India |
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Abstract: | Sodium/lithium transition metalates have found tremendous potential as cathode materials for Na/Li batteries. These metalates have acid-base and redox characteristics, which could be utilized for the chemisorption of gaseous pollutants. Their use was focused mainly on CO2 gas chemisorption at elevated temperatures. In recent years, these materials have found interesting applications in the chemisorption of CO, NO, SO2, and H2S gases. Some of these alkali ceramics have shown tremendous potential for the wet-oxidative removal of acidic gases, even in ambient conditions. The review presents an up-to-date account of alkali ceramics of 3d transition metals for the chemisorption of toxic gases, including CO2, CO, NO, SO2, and H2S. To the best of our knowledge, Na/Li 3d transition metalates have never been reviewed in the context of air decontamination, which needs to be presented to the readers for air purification applications. |
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Keywords: | Air decontamination Alkali ceramics Carbon capture Toxic gases Chemical adsorption |
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