Characteristics of Graphene Production from Graphite using Plant Extracts
2016
Jeong, Y., Chungbuk National University, Cheongju, Republic of Korea | Ryu, H., Chungbuk National University, Cheongju, Republic of Korea | Choi, C., Chungbuk National University, Cheongju, Republic of Korea | An, S., Chungbuk National University, Cheongju, Republic of Korea | Kim, W., Chungbuk National University, Cheongju, Republic of Korea | Kim, D., Chungbuk National University, Cheongju, Republic of Korea | Choi, B., Chungbuk National University, Cheongju, Republic of Korea | Salunke, B.K., Chungbuk National University, Cheongju, Republic of Korea | Kim, B.S., Chungbuk National University, Cheongju, Republic of Korea
Recently, numerous studies have utilized graphene in biomedical applications such as drug delivery, cancer therapy, and bioimaging. In this study, graphene was eco-friendly prepared by liquid phase exfoliation of graphite using plant extracts in water. Initially, 12 different plants or plant parts were screened for the characteristic graphene peak at near 268 nm using UV-Vis spectrophotometric analyses. The ability to form stable black graphene dispersion was highest using Xanthium strumarium extract. Transmission electron microscopy images showed that about 5 layer-graphene was produced from 1 g/L of graphite, while more than 5 layers were formed from 2 g/L of graphite. The optimum X. strumarium concentration for graphene production was 2 g/100 mL.
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