Defect and Magnetic Properties of Reduced Graphene Oxide Prepared from Old Coconut Shell

Kurniasari, A. Maulana, A. Y. Nugraheni, D. N. Jayanti, S. Mustofa, M. A. Baqiya, Darminto

Research output: Contribution to journalConference articlepeer-review

39 Citations (Scopus)


Defect state may be created on the grafitic bonding of carbon atoms as the dangling bonds of the reduced graphene oxide (rGO) compound. In this study, the rGO sample has been prepared by burning the coconut shell in air. The resulted burnt samples were then heated at varying temperatures (400, 700, and 1000°C) for 5 hours in air. Further, a mechanical exfoliation process using ultrasonic vibrator was added to the samples for 5 hours. Characterization using Raman spectroscopy exhibited that the intensity ratio of defect (ID) and graphene (IG) increases, implying the increase of defect number, with respect to the increasing heating temperature. According to the magnetic property measurement using vibrating sample magnetometer (VSM), it is shown that the magnetization enhances with incerasing number of defects, featuring an occurrence of defect-induced magnetism in rGO.

Original languageEnglish
Article number012021
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 20 May 2017
Event3rd International Conference on Functional Materials Science 2016, ICFMS 2016 - Sanur-Bali, Indonesia
Duration: 19 Oct 201620 Oct 2016


Dive into the research topics of 'Defect and Magnetic Properties of Reduced Graphene Oxide Prepared from Old Coconut Shell'. Together they form a unique fingerprint.

Cite this