Sustainable Production of Graphene from Solar‐Driven Expanded Graphite
Scalable synthesis of graphene sheets is challenging due to the complex production processes. Few‐layered graphene sheets with high lateral sizes (4–5 μm) through a state‐of‐the‐art solar irradiation‐driven liquid‐phase exfoliation technique are achieved. The sunlight is directly used on the interca...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-03-01
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| Series: | Advanced Energy & Sustainability Research |
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| Online Access: | https://doi.org/10.1002/aesr.202400274 |
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| author | Shanavas Shajahan Rami Elkaffas Dhinesh Babu Velusamy Dalaver H. Anjum Yarjan Abdul Samad |
| author_facet | Shanavas Shajahan Rami Elkaffas Dhinesh Babu Velusamy Dalaver H. Anjum Yarjan Abdul Samad |
| author_sort | Shanavas Shajahan |
| collection | DOAJ |
| description | Scalable synthesis of graphene sheets is challenging due to the complex production processes. Few‐layered graphene sheets with high lateral sizes (4–5 μm) through a state‐of‐the‐art solar irradiation‐driven liquid‐phase exfoliation technique are achieved. The sunlight is directly used on the intercalated graphite flakes for just 0.5 s to achieve the graphite expansion. Using focused sunlight makes our solar expansion technique sustainable with zero energy demand (0 J). The total energy spent to produce 1 kg of graphene through this technique is only around 2.135 MJ. The produced graphene sheets show significant electrical conductivity (1586 S cm−1) and high in‐plane thermal conductivity (196.3 W mK−1). The electromagnetic interference (EMI) shielding properties of solar graphene are evaluated in the X‐band region, and it shows a very high shielding effectiveness of about 71.5 dB at a thickness of ≈80 μm with an absolute EMI shielding effectiveness of about 11983.7 dB cm2 g−1. Overall, this work provides a viable approach for the efficient, scalable production of graphene with reduced energy consumption and cost, contributing to the sustainable production of graphene. |
| format | Article |
| id | doaj-art-11a4baecb9bc4c12977e7a40b14f0424 |
| institution | DOAJ |
| issn | 2699-9412 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Energy & Sustainability Research |
| spelling | doaj-art-11a4baecb9bc4c12977e7a40b14f04242025-08-20T03:16:35ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122025-03-0163n/an/a10.1002/aesr.202400274Sustainable Production of Graphene from Solar‐Driven Expanded GraphiteShanavas Shajahan0Rami Elkaffas1Dhinesh Babu Velusamy2Dalaver H. Anjum3Yarjan Abdul Samad4Department of Aerospace Engineering Khalifa University of Science and Technology 127788 Abu Dhabi United Arab EmiratesDepartment of Aerospace Engineering Khalifa University of Science and Technology 127788 Abu Dhabi United Arab EmiratesDepartment of Aerospace Engineering Khalifa University of Science and Technology 127788 Abu Dhabi United Arab EmiratesDepartment of Physics Khalifa University of Science and Technology 127788 Abu Dhabi United Arab EmiratesDepartment of Aerospace Engineering Khalifa University of Science and Technology 127788 Abu Dhabi United Arab EmiratesScalable synthesis of graphene sheets is challenging due to the complex production processes. Few‐layered graphene sheets with high lateral sizes (4–5 μm) through a state‐of‐the‐art solar irradiation‐driven liquid‐phase exfoliation technique are achieved. The sunlight is directly used on the intercalated graphite flakes for just 0.5 s to achieve the graphite expansion. Using focused sunlight makes our solar expansion technique sustainable with zero energy demand (0 J). The total energy spent to produce 1 kg of graphene through this technique is only around 2.135 MJ. The produced graphene sheets show significant electrical conductivity (1586 S cm−1) and high in‐plane thermal conductivity (196.3 W mK−1). The electromagnetic interference (EMI) shielding properties of solar graphene are evaluated in the X‐band region, and it shows a very high shielding effectiveness of about 71.5 dB at a thickness of ≈80 μm with an absolute EMI shielding effectiveness of about 11983.7 dB cm2 g−1. Overall, this work provides a viable approach for the efficient, scalable production of graphene with reduced energy consumption and cost, contributing to the sustainable production of graphene.https://doi.org/10.1002/aesr.202400274energy demandsgraphenesolar irradiationssustainabilities |
| spellingShingle | Shanavas Shajahan Rami Elkaffas Dhinesh Babu Velusamy Dalaver H. Anjum Yarjan Abdul Samad Sustainable Production of Graphene from Solar‐Driven Expanded Graphite Advanced Energy & Sustainability Research energy demands graphene solar irradiations sustainabilities |
| title | Sustainable Production of Graphene from Solar‐Driven Expanded Graphite |
| title_full | Sustainable Production of Graphene from Solar‐Driven Expanded Graphite |
| title_fullStr | Sustainable Production of Graphene from Solar‐Driven Expanded Graphite |
| title_full_unstemmed | Sustainable Production of Graphene from Solar‐Driven Expanded Graphite |
| title_short | Sustainable Production of Graphene from Solar‐Driven Expanded Graphite |
| title_sort | sustainable production of graphene from solar driven expanded graphite |
| topic | energy demands graphene solar irradiations sustainabilities |
| url | https://doi.org/10.1002/aesr.202400274 |
| work_keys_str_mv | AT shanavasshajahan sustainableproductionofgraphenefromsolardrivenexpandedgraphite AT ramielkaffas sustainableproductionofgraphenefromsolardrivenexpandedgraphite AT dhineshbabuvelusamy sustainableproductionofgraphenefromsolardrivenexpandedgraphite AT dalaverhanjum sustainableproductionofgraphenefromsolardrivenexpandedgraphite AT yarjanabdulsamad sustainableproductionofgraphenefromsolardrivenexpandedgraphite |