|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Late News Poster Session
|Conducting Graphene Synthesis from Electronic Waste
|Anurag Bajpai, Chandra Sekhar Tiwary, Krishanu Biswas
|On-Site Speaker (Planned)
In this work, we demonstrate an easily scalable green and sustainable route for beneficiation and practical usage of polymeric residue from the e-waste using cryo-temperature milling. The polymeric component was used as a precursor to synthesize graphene via pulsed laser ablation in de-ionized water. The proposed synthesis route demonstrated great promise for producing high-quality graphene. According to XPS, the sp2 hybrid state is the dominant chemical state of carbon in graphene. TEM and AFM analysis reveal that graphene has ≤4 layers with a high degree of crystallinity. Raman spectroscopy shows that the synthesized graphene has high quality that is comparable to commercial graphene. Systematic modeling yielded the optimal laser parameters (laser fluence of 20 J/cm2 with ablation time of 600 sec) for high-quality graphene and a maximum yield of 40.2%. The synthesized graphene was further used to create highly conductive electronic contacts.
|Environmental Effects, Recycling and Secondary Recovery, Sustainability