In situ reduction and functionalization of graphene oxide with l-cysteine for simultaneous electrochemical determination of cadmium(ii), lead(ii), copper(ii), and mercury(ii) ions

Handle URI:
http://hdl.handle.net/10754/563244
Title:
In situ reduction and functionalization of graphene oxide with l-cysteine for simultaneous electrochemical determination of cadmium(ii), lead(ii), copper(ii), and mercury(ii) ions
Authors:
Muralikrishna, S. N.; Sureshkumar, K.; Varley, Thomas Stephen; Nagaraju, Doddahalli H.; Ramakrishnappa, Thippeswamy
Abstract:
One pot reduction and functionalization of graphene oxide (GO) with l-cysteine (l-cys-rGO) at the edges and basal planes of the carbon layers are presented. The l-cys-rGO was characterized by X-ray diffraction studies (XRD), X-ray photoelectron spectroscopy (XPS), attenuated infrared spectroscopy (ATIR), and Raman spectroscopy. The surface morphology was studied by scanning electron microscopy (SEM) and transmittance electron microscopy (TEM). The l-cys-rGO was further utilized for the simultaneous electrochemical quantification of environmentally harmful metal ions such as, Cd2+, Pb2+, Cu2+ and Hg2+. Detection limits obtained for these metal ions were 0.366, 0.416, 0.261 and 1.113 μg L-1 respectively. The linear range obtained for Cd2+, Cu2+ and Hg2+ was 0.4 to 2.0 μM and for Pb2+ was 0.4 to 1.2 μM. The detection limits were found to be less than the World Health Organization (WHO) limits. The developed protocol was applied for the determination of the above metal ions in various environmental samples and the results obtained were validated by atomic absorption spectroscopy (AAS). This journal is
KAUST Department:
Materials Science and Engineering Program
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Anal. Methods
Issue Date:
2014
DOI:
10.1039/c4ay01945h
Type:
Article
ISSN:
17599660
Sponsors:
The authors would like to thank Jain University for the financial support. We also wish to extend our gratitude to Dr Rishi Parajuli, Dr Narayanappa Sivasankar, Liquid Light Inc., Monmouth Junction, New Jersey, USA 08852, for pre-review of the manuscript and Rajesh Chalasani, Inorganic and Physical Chemistry Department, IISc, Bangalore, India, for helping to draw schematic diagrams.
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMuralikrishna, S. N.en
dc.contributor.authorSureshkumar, K.en
dc.contributor.authorVarley, Thomas Stephenen
dc.contributor.authorNagaraju, Doddahalli H.en
dc.contributor.authorRamakrishnappa, Thippeswamyen
dc.date.accessioned2015-08-03T11:43:59Zen
dc.date.available2015-08-03T11:43:59Zen
dc.date.issued2014en
dc.identifier.issn17599660en
dc.identifier.doi10.1039/c4ay01945hen
dc.identifier.urihttp://hdl.handle.net/10754/563244en
dc.description.abstractOne pot reduction and functionalization of graphene oxide (GO) with l-cysteine (l-cys-rGO) at the edges and basal planes of the carbon layers are presented. The l-cys-rGO was characterized by X-ray diffraction studies (XRD), X-ray photoelectron spectroscopy (XPS), attenuated infrared spectroscopy (ATIR), and Raman spectroscopy. The surface morphology was studied by scanning electron microscopy (SEM) and transmittance electron microscopy (TEM). The l-cys-rGO was further utilized for the simultaneous electrochemical quantification of environmentally harmful metal ions such as, Cd2+, Pb2+, Cu2+ and Hg2+. Detection limits obtained for these metal ions were 0.366, 0.416, 0.261 and 1.113 μg L-1 respectively. The linear range obtained for Cd2+, Cu2+ and Hg2+ was 0.4 to 2.0 μM and for Pb2+ was 0.4 to 1.2 μM. The detection limits were found to be less than the World Health Organization (WHO) limits. The developed protocol was applied for the determination of the above metal ions in various environmental samples and the results obtained were validated by atomic absorption spectroscopy (AAS). This journal isen
dc.description.sponsorshipThe authors would like to thank Jain University for the financial support. We also wish to extend our gratitude to Dr Rishi Parajuli, Dr Narayanappa Sivasankar, Liquid Light Inc., Monmouth Junction, New Jersey, USA 08852, for pre-review of the manuscript and Rajesh Chalasani, Inorganic and Physical Chemistry Department, IISc, Bangalore, India, for helping to draw schematic diagrams.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleIn situ reduction and functionalization of graphene oxide with l-cysteine for simultaneous electrochemical determination of cadmium(ii), lead(ii), copper(ii), and mercury(ii) ionsen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalAnal. Methodsen
dc.contributor.institutionCentre for Nano and Material Sciences, Jain UniversityJakkasandra, Indiaen
dc.contributor.institutionDepartment of Chemistry, University College London, 20 Gordon St.London, United Kingdomen
kaust.authorNagaraju, Doddahalli H.en
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