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Synthesis of 5-nitroso-6-amino-uracil functionalized graphene  oxide and its application for the detection of chromium, silver and  ferric ions in aqueous solution
  • +2
  • Pramanand Kumar,
  • Chandramika Bora,
  • Brajesh Kumar,
  • Pradip Kr. Sukul,
  • Dr. Subrata Das
Pramanand Kumar
Department of Chemistry, National Institute of Technology Patna
Author Profile
Chandramika Bora
Department of Chemistry, National Institute of Technology Patna, Department of Chemistry, Indian Institute of Technology Patna
Brajesh Kumar
Department of Chemistry, National Institute of Technology Patna
Pradip Kr. Sukul
Department of Chemistry, Amity university, Kolakta, Department of Chemistry, National Institute of Technology Patna
Dr. Subrata Das
Department of Chemistry, National Institute of Technology Patna

Abstract

Heavy metal pollution is a very serious issue for living beings. The estimation of heavy metals is an expensive and complex process. Herein, we have developed a simple method to prepare nitroso-uracil functionalized graphene oxide (GO-NO-Ur) and nitroso-uracil functionalized reduced graphene oxide (rGO-NO-Ur) for the detection and determination of heavy metals. The synthesized materials were characterized by FTIR, XRD, TGA, SEM, TEM, EDX, and UV-Vis spectroscopy. We have studied the application of both GO-NO-Ur and rGO-NO-Ur for the detection of various metallic ions such as Ag(I), Fe(III) and Cr (VI). The LOD and LOQ value of Ag(I) were found to be 4.6 mg/L and 14.1 mg/L at lmax 257 nm, respectively. Whereas, the LOD values were observed 4.6 mg/L and 4.8 mg/L at lmax 269 nm and lmax 375 nm, respectively. The LOQ values of Cr(VI) were found to be 14.1 mg/L and 14.12 mg/L at max 269 nm and 375 nm, respectively. This method is very effective for the selective detection of Cr (VI) and Ag (I) present in aqueous environments and may be used for a variety of biological as well as environmental samples.