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Co/Fe co-doped ZIF-...
Co/Fe co-doped ZIF-8 derived hierarchically porous composites as high-performance electrode materials for Cu2+ions capacitive deionization
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- Wang, Hongyu (author)
- Guangzhou Univ, Peoples R China
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- You, Henghui (author)
- Guangzhou Univ, Peoples R China; Guangzhou Res Ctr City Management Technol, Peoples R China
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- Wu, Guoqing (author)
- Guangzhou Univ, Peoples R China
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- Huang, Lei (author)
- Guangzhou Univ, Peoples R China
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- Yan, Jia (author)
- Guangzhou Univ, Guangzhou Univ Linkoping Univ Res Ctr Urban Sustai, Guangzhou 510006, Peoples R China; Guangzhou Univ, Peoples R China
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- Liu, Xianjie (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Ma, Yuanke (author)
- Guangzhou Univ, Peoples R China
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- Wu, Mingjie (author)
- Guangzhou Univ, Peoples R China
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- Zeng, Yuanlin (author)
- Guangzhou Univ, Peoples R China
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- Yu, Jianxin (author)
- Guangzhou Univ, Peoples R China
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- Zhang, Hongguo (author)
- Guangzhou Univ, Guangzhou Univ Linkoping Univ Res Ctr Urban Sustai, Guangzhou 510006, Peoples R China; Guangzhou Univ, Peoples R China; Guangzhou Univ, Peoples R China
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(creator_code:org_t)
- ELSEVIER SCIENCE SA, 2023
- 2023
- English.
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In: Chemical Engineering Journal. - : ELSEVIER SCIENCE SA. - 1385-8947 .- 1873-3212. ; 460
- 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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- Due to a threat to human life from heavy metal ions pollution, unprecedented interest has been gained in the development of water purification technologies. Here, we explore another new approach to exploit a prospective carbon material for removing copper ions from aqueous solution based on rapid and easy capacitive deionization (CDI). Reasonable carbon materials modification with ideal composition and improved morphological structure is essential to additionally optimize the capabilities of CDI. We prepared a nitrogen-rich hierarchically porous carbon composites (CoFe-NC) with uniform cobalt (Co) and iron (Fe) doped metal in carbon skeleton by a simple impregnation and pyrolysis method, derived from zeolitic imidazolate framework-8, to use as highly effective CDI electrode for copper ions removal. The addition of Fe can facilitate the uniform dispersion of metals, and enable the formation of a stable carbon cage after pyrolysis. It can sufficiently expose active sites of the electrode materials and promote interfacial charge transfer, thus improving CDI electrosorption efficiency. CoFe-NC composites electrode can achieve outstanding deionization capacity (91.31 mg g-1) in 25 mg L-1 CuSO4 solu-tion. The carbon cage structure of CoFe-NC not only prevents aggregation of metals and avoids destruction of rich multistage pore system by pyrolysis, but also induces a faster ions transport rate. In addition, density functional theory calculations demonstrated that the co-doping of Co and Fe can remarkably increase the adsorption en-ergies of Cu2+ ions, leading to excellent selectivity, which indicates that CoFe-NC composites can be a desired CDI electrode material.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Copper ions; Capacitive deionization; Metal organic frameworks; Bimetallic co -doping; Electrode material
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Wang, Hongyu
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You, Henghui
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Wu, Guoqing
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Huang, Lei
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Yan, Jia
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Liu, Xianjie
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show more...
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Ma, Yuanke
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Wu, Mingjie
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Zeng, Yuanlin
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Yu, Jianxin
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Zhang, Hongguo
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
- Articles in the publication
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Chemical Enginee ...
- By the university
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Linköping University