Green synthesized silver nanoparticles decorated on reduced graphene oxide for enhanced electrochemical sensing of nitrobenzene in waste water samplesElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra00992h
In the present work, an electrochemical sensor for nitrobenzene (NB) has been developed based on a green synthesized silver nanoparticles (AgNPs) decorated reduced graphene oxide (RGO) modified glassy carbon electrode (GCE). The AgNPs were synthesized using Justicia glauca leaf extract as a reducing...
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Language | English |
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31.03.2015
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Abstract | In the present work, an electrochemical sensor for nitrobenzene (NB) has been developed based on a green synthesized silver nanoparticles (AgNPs) decorated reduced graphene oxide (RGO) modified glassy carbon electrode (GCE). The AgNPs were synthesized using
Justicia glauca
leaf extract as a reducing and stabilizing agent. A RGO-AgNPs composite modified electrode was prepared by a simple electrochemical reduction of AgNPs dispersed GO solution. FESEM of RGO-AgNPs composite confirms that AgNPs are firmly attached on the RGO sheets and the average size of AgNPs is found to be 40 ± 5 nm. The modified electrode shows good efficiency with lower overpotential for electrocatalytic reduction of NB than that of other modified electrodes (AgNPs and RGO). The DPV response confirms that the reduction peak current of NB is linear over the concentrations from 0.5 to 900 μM. The sensitivity of the sensors is found to be 0.836 μA μM
−1
cm
−2
with the detection limit of 0.261 μM for NB. In addition, the RGO-AgNPs composite modified electrode shows good selectivity in the presence of potentially interfering similar compounds and good practicality in the waste water samples.
In the present work, an electrochemical sensor for nitrobenzene has been developed based on a green synthesized silver nanoparticle (AgNP) decorated reduced graphene oxide (RGO) modified glassy carbon electrode (GCE). |
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AbstractList | In the present work, an electrochemical sensor for nitrobenzene (NB) has been developed based on a green synthesized silver nanoparticles (AgNPs) decorated reduced graphene oxide (RGO) modified glassy carbon electrode (GCE). The AgNPs were synthesized using
Justicia glauca
leaf extract as a reducing and stabilizing agent. A RGO-AgNPs composite modified electrode was prepared by a simple electrochemical reduction of AgNPs dispersed GO solution. FESEM of RGO-AgNPs composite confirms that AgNPs are firmly attached on the RGO sheets and the average size of AgNPs is found to be 40 ± 5 nm. The modified electrode shows good efficiency with lower overpotential for electrocatalytic reduction of NB than that of other modified electrodes (AgNPs and RGO). The DPV response confirms that the reduction peak current of NB is linear over the concentrations from 0.5 to 900 μM. The sensitivity of the sensors is found to be 0.836 μA μM
−1
cm
−2
with the detection limit of 0.261 μM for NB. In addition, the RGO-AgNPs composite modified electrode shows good selectivity in the presence of potentially interfering similar compounds and good practicality in the waste water samples.
In the present work, an electrochemical sensor for nitrobenzene has been developed based on a green synthesized silver nanoparticle (AgNP) decorated reduced graphene oxide (RGO) modified glassy carbon electrode (GCE). |
Author | Al-Hemaid, Fahad M. A Muthupandi, K Prakash, P Ali, M. Ajmal Palanisamy, Selvakumar Lou, Bih-Show Rajan, A Karuppiah, Chelladurai Chen, Shen-Ming |
AuthorAffiliation | Department of Chemistry National Taipei University of Technology Department of Botany and Microbiology Department of Chemical Engineering and Biotechnology Chang Gung University Center for General Education College of Science Thiagarajar College Chemistry Division King Saud University Electroanalysis and Bioelectrochemistry Lab |
AuthorAffiliation_xml | – name: Chemistry Division – name: Department of Botany and Microbiology – name: Department of Chemistry – name: Center for General Education – name: Department of Chemical Engineering and Biotechnology – name: Electroanalysis and Bioelectrochemistry Lab – name: Chang Gung University – name: Thiagarajar College – name: King Saud University – name: National Taipei University of Technology – name: College of Science |
Author_xml | – sequence: 1 givenname: Chelladurai surname: Karuppiah fullname: Karuppiah, Chelladurai – sequence: 2 givenname: K surname: Muthupandi fullname: Muthupandi, K – sequence: 3 givenname: Shen-Ming surname: Chen fullname: Chen, Shen-Ming – sequence: 4 givenname: M. Ajmal surname: Ali fullname: Ali, M. Ajmal – sequence: 5 givenname: Selvakumar surname: Palanisamy fullname: Palanisamy, Selvakumar – sequence: 6 givenname: A surname: Rajan fullname: Rajan, A – sequence: 7 givenname: P surname: Prakash fullname: Prakash, P – sequence: 8 givenname: Fahad M. A surname: Al-Hemaid fullname: Al-Hemaid, Fahad M. A – sequence: 9 givenname: Bih-Show surname: Lou fullname: Lou, Bih-Show |
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Title | Green synthesized silver nanoparticles decorated on reduced graphene oxide for enhanced electrochemical sensing of nitrobenzene in waste water samplesElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra00992h |
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