Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material
Abstract Recycling solid waste as functional materials is important for both environmental remediation and resource recycling. This study attempts to recycle spent Cu/Fe layered double hydroxide (Cu/Fe-LDH) which is generated from the adsorption of dyes by converting to Cr(VI) reductant and porous c...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2017-08-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-07775-8 |
| _version_ | 1831631398099746816 |
|---|---|
| author | Minwang Laipan Haoyang Fu Runliang Zhu Luyi Sun Jianxi Zhu Hongping He |
| author_facet | Minwang Laipan Haoyang Fu Runliang Zhu Luyi Sun Jianxi Zhu Hongping He |
| author_sort | Minwang Laipan |
| collection | DOAJ |
| description | Abstract Recycling solid waste as functional materials is important for both environmental remediation and resource recycling. This study attempts to recycle spent Cu/Fe layered double hydroxide (Cu/Fe-LDH) which is generated from the adsorption of dyes by converting to Cr(VI) reductant and porous carbon material. Results showed that the obtained reductant was mainly composed of Fe0 and Cu0, and exhibited good reductive activity toward Cr(VI). The species of Fe0, Fe2+, Cu0, and Cu+ all favored the reduction of Cr(VI) according to X-ray photoelectron spectroscopy analysis. During Cr(VI) removal, solution pH could increase to neutral which caused the metal ions to precipitate near completion. On the other hand, the spent Cu/Fe-LDH could be employed to produce porous carbon materials, and the generated waste metals solution herein could be reused for LDH synthesis. Specific surface areas of the obtained carbon materials varied from 141.3–744.2 m2/g with changes in adsorbed amount of dyes on the LDH. This study illustrates that all the components of wastes can be useful resources, offering a simple recycling approach for similar organic-inorganic solid wastes. This work also enlightens us that designing a proper initial product is crucial to make waste recycling simpler. |
| first_indexed | 2024-12-19T05:00:41Z |
| format | Article |
| id | doaj.art-297cbc78bbb340ed853f91b796282089 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T05:00:41Z |
| publishDate | 2017-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-297cbc78bbb340ed853f91b7962820892022-12-21T20:35:07ZengNature PortfolioScientific Reports2045-23222017-08-017111110.1038/s41598-017-07775-8Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon MaterialMinwang Laipan0Haoyang Fu1Runliang Zhu2Luyi Sun3Jianxi Zhu4Hongping He5CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS)CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS)CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS)Department of Chemical & Biomolecular Engineering, Polymer Program, Institute of Materials Science, University of ConnecticutCAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS)CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS)Abstract Recycling solid waste as functional materials is important for both environmental remediation and resource recycling. This study attempts to recycle spent Cu/Fe layered double hydroxide (Cu/Fe-LDH) which is generated from the adsorption of dyes by converting to Cr(VI) reductant and porous carbon material. Results showed that the obtained reductant was mainly composed of Fe0 and Cu0, and exhibited good reductive activity toward Cr(VI). The species of Fe0, Fe2+, Cu0, and Cu+ all favored the reduction of Cr(VI) according to X-ray photoelectron spectroscopy analysis. During Cr(VI) removal, solution pH could increase to neutral which caused the metal ions to precipitate near completion. On the other hand, the spent Cu/Fe-LDH could be employed to produce porous carbon materials, and the generated waste metals solution herein could be reused for LDH synthesis. Specific surface areas of the obtained carbon materials varied from 141.3–744.2 m2/g with changes in adsorbed amount of dyes on the LDH. This study illustrates that all the components of wastes can be useful resources, offering a simple recycling approach for similar organic-inorganic solid wastes. This work also enlightens us that designing a proper initial product is crucial to make waste recycling simpler.https://doi.org/10.1038/s41598-017-07775-8 |
| spellingShingle | Minwang Laipan Haoyang Fu Runliang Zhu Luyi Sun Jianxi Zhu Hongping He Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material Scientific Reports |
| title | Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material |
| title_full | Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material |
| title_fullStr | Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material |
| title_full_unstemmed | Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material |
| title_short | Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material |
| title_sort | converting spent cu fe layered double hydroxide into cr vi reductant and porous carbon material |
| url | https://doi.org/10.1038/s41598-017-07775-8 |
| work_keys_str_mv | AT minwanglaipan convertingspentcufelayereddoublehydroxideintocrvireductantandporouscarbonmaterial AT haoyangfu convertingspentcufelayereddoublehydroxideintocrvireductantandporouscarbonmaterial AT runliangzhu convertingspentcufelayereddoublehydroxideintocrvireductantandporouscarbonmaterial AT luyisun convertingspentcufelayereddoublehydroxideintocrvireductantandporouscarbonmaterial AT jianxizhu convertingspentcufelayereddoublehydroxideintocrvireductantandporouscarbonmaterial AT hongpinghe convertingspentcufelayereddoublehydroxideintocrvireductantandporouscarbonmaterial |