title: Ternary nanohybrid of reduced graphene oxide-nafion@silver nanoparticles for boosting the sensor performance in non-enzymatic amperometric detection of hydrogen peroxide.
abstract: A sensitive and novel electrochemical sensor was developed for the detection of hydrogen peroxide (H2O2) using a reduced graphene oxide-nafion@silver6 (rGO-Nf@Ag6) nanohybrid modified glassy carbon electrode (GC/rGO-Nf@Ag6). The GC/rGO-Nf@Ag6 electrode exhibited an excellent electrochemical sensing ability for determining H2O2with high sensitivity and selectivity. The detection limit of the electrochemical sensor using the GC/rGO-Nf@Ag6 electrode for H2O2determination was calculated to be 5.35×10-7M with sensitivity of 0.4508µAµM-1. The coupling between rGO-Nf with silver nanoparticles (AgNPs) significantly boosted the electroanalytical performance by providing more active area for analyte interaction, thereby allowing more rapid interfacial electron transfer process. The interfering effect on the current response of H2O2was studied and the results revealed that the sensor electrode exhibited an excellent immunity from most common interferents. The proposed non-enzymatic electrochemical sensor was used for determining H2O2in apple juice, and the sensor electrode provided satisfactory results with reliable recovery values. These studies revealed that the novel GC/rGO-Nf@Ag6 sensor electrode could be a potential candidate for the detection of H2O2.
authors.affiliation: Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Norazriena
authors.initials: N
authors.lastname: Yusoff
authors.affiliation: Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Perumal
authors.initials: P
authors.lastname: Rameshkumar
authors.affiliation: Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Muhammad Shahid
authors.initials: MS
authors.lastname: Mehmood
authors.affiliation: Research Institute & Department of Chemistry, SRM University, Kattankulathur 603 203, Tamil Nadu, India.
authors.forename: Alagarsamy
authors.initials: A
authors.lastname: Pandikumar
authors.affiliation: Nanoelectronics Lab, MIMOS Berhad, Technology Park Malaysia, Kuala Lumpur 57000, Malaysia.
authors.forename: Hing Wah
authors.initials: HW
authors.lastname: Lee
authors.affiliation: Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; Centre of Printable Electronics, Deputy Vice Chancellor Office, University of Malaya, Kuala Lumpur 50603, Malaysia. Electronic address: huangnayming@um.edu.my.
authors.forename: Nay Ming
authors.initials: NM
authors.lastname: Huang
mesh_terms: D055664:Electrochemical Techniques / Q000379:methods*; D005465:Fluorocarbon Polymers / Q000737:chemistry*; D000067030:Fruit and Vegetable Juices / Q000032:analysis*; D006108:Graphite / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis*; D057230:Limit of Detection; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D012834:Silver / Q000737:chemistry*
chemical_list: D005465:Fluorocarbon Polymers; D010087:Oxides; C040402:perfluorosulfonic acid; D012834:Silver; D006108:Graphite; D006861:Hydrogen Peroxide
keywords: Electrochemical Sensor; Hydrogen Peroxide; Nafion; Nanohybrid; Reduced Graphene Oxide; Silver Nanoparticles