Bandi Suresh, Ravuri Syamsai, Peshwe Dilip Ramkrishna, Srivastav Ajeet Kumar
Department of Metallurgical and Materials Engineering, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.
Center for Nanotechnology Research, VIT University, Vellore, 632014, India.
J Hazard Mater. 2019 Mar 15;366:358-369. doi: 10.1016/j.jhazmat.2018.12.005. Epub 2018 Dec 3.
Utilization of extracted graphite rods from discharged dry cell batteries for synthesis of graphene oxide / graphene serves two purposes, one is waste management which supports environmental safety and the second is low cost production of graphene oxide / graphene which are highly promising 2D materials in various fields of research. In the present work, a sustainable feasibility for the synthesis of graphene oxide / graphene from graphite rods of waste dry cell batteries is demonstrated. The graphite rods separated from the waste dry cell batteries were subjected to electrochemical exfoliation (ECE) in an acidic media. The graphene oxide (GO) obtained from this method was subjected to reduction heat treatment under argon atmosphere at suitable temperature and time period. Finally, the reduced graphene oxide (rGO) i.e., graphene was characterized using XRD, FTIR, Raman Spectroscopy, TGA, BET, SEM and TEM. The few layer graphene structure is supposed to be less defective in comparison to similar exfoliation techniques due to less oxygen-functional groups associated with the intermediate graphene oxide.
利用从废旧干电池中提取的石墨棒来合成氧化石墨烯/石墨烯有两个目的，一是废物管理，这有助于环境安全，二是低成本生产氧化石墨烯/石墨烯，它们是在各个研究领域都极具前景的二维材料。在本工作中，展示了从废旧干电池的石墨棒合成氧化石墨烯/石墨烯的可持续可行性。从废旧干电池中分离出的石墨棒在酸性介质中进行电化学剥离（ECE）。通过该方法获得的氧化石墨烯（GO）在氩气气氛下于合适的温度和时间段进行还原热处理。最后，使用XRD、FTIR、拉曼光谱、TGA、BET、SEM和TEM对还原氧化石墨烯（rGO）即石墨烯进行表征。由于与中间氧化石墨烯相关的氧官能团较少，与类似的剥离技术相比，少层石墨烯结构的缺陷应该更少。
