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Vacancy-Rich and Po...
Vacancy-Rich and Porous NiFe-Layered Double Hydroxide Ultrathin Nanosheets for Efficient Photocatalytic NO Oxidation and Storage
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- Li, Hao (author)
- Institute of Environmental Engineering, Zürich, Switzerland; Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
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- Zhu, Huijun (author)
- Linköpings universitet
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- Shi, Yanbiao (author)
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
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- Shang, Huan (author)
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Applied & Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan, China
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- Zhang, Lizhi (author)
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China; Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Applied & Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan, China;
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- Wang, Jing (author)
- Institute of Environmental Engineering, Zürich, Switzerland; Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
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(creator_code:org_t)
- 2022-01-21
- 2022
- English.
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In: Environmental Science and Technology. - Columbus, OH, United States : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 56:3, s. 1771-1779
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- An appealing strategy in the direction of circular chemistry and sustainable nitrogen exploitation is to efficiently convert NOx pollutants into low-toxic products and simultaneously provide crop plants with metabolic nitrogen. This study demonstrates that such a scenario can be realized by a defect- and morphology-coengineered Ni-Fe-layered double hydroxide (NiFe-LDH) comprising ultrathin nanosheets. Rich oxygen vacancies are introduced onto the NiFe-LDH surface, which facilitate charge carrier transfer and enable photocatalytic O2 activation into superoxide radicals (•O2-) under visible light. •O2- on NiFe-LDH thermodynamically oxidizes NO into nitrate with selectivity over 92%, thus suppressing dangerous NO2 emissions. By merit of abundant mesopores on NiFe-LDH ultrathin nanosheets bearing a high surface area (103.08 m2/g), nitrate can be readily stored without compromising the NO oxidation reactivity or selectivity for long-term usage. The nitrate species can be easily washed off the NiFe-LDH surface and then enriched in the liquid form as easy-to-use chemicals.
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Keyword
- photocatalysis
- NO removal
- layered double hydroxide
- environmental control
- nitrate storage
Publication and Content Type
- ref (subject category)
- art (subject category)
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