A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse
ABSTRACT The increasing accumulation of e‐waste containing precious metals calls for the development of efficient recycling strategies for gold recovery from e‐waste. In this study, we present scalable fabrication (up to 3600 cm2) of rGO/cellulose composite papers with a high rGO areal density of 7....
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-05-01
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| Series: | EcoMat |
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| Online Access: | https://doi.org/10.1002/eom2.70014 |
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| author | Mingrui Zhang Qing Zhang Fei Li Chengjin Wang Yang Su Hui‐Ming Cheng |
| author_facet | Mingrui Zhang Qing Zhang Fei Li Chengjin Wang Yang Su Hui‐Ming Cheng |
| author_sort | Mingrui Zhang |
| collection | DOAJ |
| description | ABSTRACT The increasing accumulation of e‐waste containing precious metals calls for the development of efficient recycling strategies for gold recovery from e‐waste. In this study, we present scalable fabrication (up to 3600 cm2) of rGO/cellulose composite papers with a high rGO areal density of 7.5 g/m2 and their use as efficient and large‐area adsorbents for gold extraction. The resulting rGO@cellulose composite exhibits excellent gold extraction capacity, achieving 20 and 36.3 g/m2 at 25°C and 60°C, respectively, which translates to high gravimetric capacities of 2662 mg/g and 4833 mg/g. When used for gold extraction from e‐waste containing 13 types of metals, the rGO@cellulose maintains a precise selectivity for gold and achieves high extraction efficiency of 99.6%, providing a promising avenue for the sustainable recovery of gold from e‐waste. Furthermore, the gold recycled by the rGO@cellulose can be reused for photothermal steam generation and catalytic degradation of environmental contaminants, demonstrating its potential for diverse environmental applications beyond gold extraction. This work provides a sustainable approach to e‐waste recycling, offering a pathway to address environmental challenges while promoting the circular use of resources. |
| format | Article |
| id | doaj-art-fb0d6d7025c6423ca0ff8d116bf7a7a3 |
| institution | Kabale University |
| issn | 2567-3173 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | EcoMat |
| spelling | doaj-art-fb0d6d7025c6423ca0ff8d116bf7a7a32025-08-20T03:49:36ZengWileyEcoMat2567-31732025-05-0175n/an/a10.1002/eom2.70014A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its ReuseMingrui Zhang0Qing Zhang1Fei Li2Chengjin Wang3Yang Su4Hui‐Ming Cheng5Institute of Materials Research, Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen People's Republic of ChinaInstitute of Materials Research, Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen People's Republic of ChinaInstitute of Materials Research, Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen People's Republic of ChinaInstitute of Materials Research, Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen People's Republic of ChinaInstitute of Materials Research, Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen People's Republic of ChinaShenzhen Key Laboratory of Energy Materials for Carbon Neutrality, Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences Shenzhen People's Republic of ChinaABSTRACT The increasing accumulation of e‐waste containing precious metals calls for the development of efficient recycling strategies for gold recovery from e‐waste. In this study, we present scalable fabrication (up to 3600 cm2) of rGO/cellulose composite papers with a high rGO areal density of 7.5 g/m2 and their use as efficient and large‐area adsorbents for gold extraction. The resulting rGO@cellulose composite exhibits excellent gold extraction capacity, achieving 20 and 36.3 g/m2 at 25°C and 60°C, respectively, which translates to high gravimetric capacities of 2662 mg/g and 4833 mg/g. When used for gold extraction from e‐waste containing 13 types of metals, the rGO@cellulose maintains a precise selectivity for gold and achieves high extraction efficiency of 99.6%, providing a promising avenue for the sustainable recovery of gold from e‐waste. Furthermore, the gold recycled by the rGO@cellulose can be reused for photothermal steam generation and catalytic degradation of environmental contaminants, demonstrating its potential for diverse environmental applications beyond gold extraction. This work provides a sustainable approach to e‐waste recycling, offering a pathway to address environmental challenges while promoting the circular use of resources.https://doi.org/10.1002/eom2.70014gold extractiongraphenemembrane |
| spellingShingle | Mingrui Zhang Qing Zhang Fei Li Chengjin Wang Yang Su Hui‐Ming Cheng A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse EcoMat gold extraction graphene membrane |
| title | A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse |
| title_full | A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse |
| title_fullStr | A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse |
| title_full_unstemmed | A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse |
| title_short | A Large‐Area Graphene‐Based Composite Paper for Efficient Gold Extraction From E‐Waste and Its Reuse |
| title_sort | large area graphene based composite paper for efficient gold extraction from e waste and its reuse |
| topic | gold extraction graphene membrane |
| url | https://doi.org/10.1002/eom2.70014 |
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