Recycling non-food-grade tree gum wastes into nanoporous carbon for sustainable energy harvesting

The disposal of natural wastes has become a global problem and the use of lower-grade gums is very limited owing to their impurities as well as sticky nature. Rather than disposing these wastes, nanoporous carbon (nC) has instead been synthesized by carbonization and exfoliation. The synthesized nC...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2020-02, Vol.22 (4), p.1198-128
Main Authors: Venkateshaiah, Abhilash, Cheong, Jun Young, Shin, Sung-Ho, Akshaykumar, K. P, Yun, Tae Gwang, Bae, Jaehyeong, Wac awek, Stanis aw, erník, Miroslav, Agarwal, Seema, Greiner, Andreas, Padil, Vinod V. T, Kim, Il-Doo, Varma, Rajender S
Format: Article
Language:English
Subjects:
Capillarity
Carbon
Clean energy
Electric power generation
Electricity
Energy
Energy conversion
Energy harvesting
Evaporation
Food waste
Green chemistry
Gums
Impurities
Light emitting diodes
Nanomaterials
Nanotechnology
Porosity
Renewable energy
Sustainability
Sustainable energy
Sustainable harvest
Synthesis
Waste disposal
Wastes
Wetting
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Summary:The disposal of natural wastes has become a global problem and the use of lower-grade gums is very limited owing to their impurities as well as sticky nature. Rather than disposing these wastes, nanoporous carbon (nC) has instead been synthesized by carbonization and exfoliation. The synthesized nC exhibits a substantially high surface area along with abundant micro/mesopores. This desirable and useful nature of nC is well-suited for water-driven effective electrical energy conversion, which enables the fast evaporation of water via a capillary action through nanopores. Under asymmetric wetting in a water container and ambient conditions, the nC-based energy harvesters showed high capability of electricity production and reliable output generation, easily turning on a blue light-emitting diode (2.5 V and 20 mA) using a stored power source. In summary, many energy harvesters can be manufactured for the scale-up of electricity, and the suitability of regenerated carbon nanomaterials for green energy harvesting can contribute toward alleviating chronic environmental issues. Nanoporous carbon (nC), as electricity source, is prepared from low-grade tree-gum wastes via carbonization and exfoliation.
ISSN:1463-9262
1463-9270
DOI:10.1039/c9gc04310a