Facile synthesis of graphene quantum dots from 3D graphene and their application for Fe3+ sensing

• Main Authors: Ananthanarayanan, Arundithi, Wang, Xuewan, Routh, Parimal, Sana, Barindra, Lim, Sierin, Li, Jun, Chen, Peng, Lim, Kok Hwa, Kim, Dong-Hwan
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Materials
• Online Access: https://hdl.handle.net/10356/102868; http://hdl.handle.net/10220/19199
• Institution: Nanyang Technological University

Owing to their small size, biocompatibility, unique and tunable photoluminescence, and physicochemical properties, graphene quantum dots (GQDs) are an emerging class of zero-dimensional materials promising a wide spectrum of novel applications in bio-imaging, optical, and electrochemical sensors, energy devices, and so forth. Their widespread use, however, is largely limited by the current lack of high yield synthesis methods of high-quality GQDs. In this contribution, a facile method to electrochemically exfoliate GQDs from three-dimensional graphene grown by chemical vapor deposition (CVD) is reported. Furthermore, the use of such GQDs for sensitive and specific detection of ferric ions is demonstrated.