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

S. N. Muralikrishna; K. Sureshkumar; Thomas Stephen Varley; Doddahalli H. Nagaraju; Thippeswamy Ramakrishnappa

doi:10.1039/c4ay01945h

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

S. N. Muralikrishna, K. Sureshkumar, Thomas Stephen Varley, Doddahalli H. Nagaraju, Thippeswamy Ramakrishnappa

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

203 Scopus citations

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

Original language	English (US)
Pages (from-to)	8698-8705
Number of pages	8
Journal	Anal. Methods
Volume	6
Issue number	21
DOIs	https://doi.org/10.1039/c4ay01945h
State	Published - Sep 3 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.

ASJC Scopus subject areas

General Engineering
General Chemical Engineering
Analytical Chemistry

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10.1039/c4ay01945h

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@article{541a1531ff514ee1b787d271dc15ec8c,

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",

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",

author = "Muralikrishna, {S. N.} and K. Sureshkumar and Varley, {Thomas Stephen} and Nagaraju, {Doddahalli H.} and Thippeswamy Ramakrishnappa",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.",

year = "2014",

month = sep,

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doi = "10.1039/c4ay01945h",

language = "English (US)",

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publisher = "Royal Society of Chemistry",

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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. / Muralikrishna, S. N.; Sureshkumar, K.; Varley, Thomas Stephen et al.
In: Anal. Methods, Vol. 6, No. 21, 03.09.2014, p. 8698-8705.

Research output: Contribution to journal › Article › peer-review

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T1 - 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

AU - Muralikrishna, S. N.

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AU - Varley, Thomas Stephen

AU - Nagaraju, Doddahalli H.

AU - Ramakrishnappa, Thippeswamy

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.

PY - 2014/9/3

Y1 - 2014/9/3

N2 - 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

AB - 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

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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

Abstract

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