Amperometric non-enzymatic hydrogen peroxide sensor based on aligned zinc oxide nanorods

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Zinc oxide (ZnO) nanorods (NRs) have been synthesized via the hydrothermal process. The NRs were grown over a conductive glass substrate. A non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2), based on the prepared ZnO NRs, was examined through the use of current-voltage measurements. The measured currents, as a function of H2O2 concentrations ranging from 10 μM to 700 μM, revealed two distinct behaviours and good performance, with a lower detection limit (LOD) of 42 μM for the low range of H2O2 concentrations (first region), and a LOD of 143.5 μM for the higher range of H2O2 concentrations (second region). The prepared ZnO NRs show excellent electrocatalytic activity. This enables a measurable and stable output current. The results were correlated with the oxidation process of the H2O2 and revealed a good performance for the ZnO NR non-enzymatic H2O2 sensor.

Original languageEnglish
Article number1004
JournalSensors (Switzerland)
Volume16
Issue number7
DOIs
Publication statusPublished - 2016

Fingerprint

Zinc Oxide
Nanotubes
Zinc oxide
Nanorods
hydrogen peroxide
Hydrogen peroxide
zinc oxides
Hydrogen Peroxide
nanorods
sensors
Sensors
Limit of Detection
Electrochemical sensors
Voltage measurement
Electric current measurement
electrical measurement
Glass
Oxidation
oxidation
glass

Keywords

  • Hydrogen peroxide
  • Nanorods
  • Non-enzymatic biosensor
  • Zinc oxide

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Analytical Chemistry
  • Biochemistry

Cite this

Amperometric non-enzymatic hydrogen peroxide sensor based on aligned zinc oxide nanorods. / Al-Hardan, Naif H.; Abdul Hamid, Muhammad Azmi; Shamsudin, Roslinda; Othman, Norinsan Kamil; Kar Keng, Lim.

In: Sensors (Switzerland), Vol. 16, No. 7, 1004, 2016.

Research output: Contribution to journalArticle

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AU - Othman, Norinsan Kamil

AU - Kar Keng, Lim

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N2 - Zinc oxide (ZnO) nanorods (NRs) have been synthesized via the hydrothermal process. The NRs were grown over a conductive glass substrate. A non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2), based on the prepared ZnO NRs, was examined through the use of current-voltage measurements. The measured currents, as a function of H2O2 concentrations ranging from 10 μM to 700 μM, revealed two distinct behaviours and good performance, with a lower detection limit (LOD) of 42 μM for the low range of H2O2 concentrations (first region), and a LOD of 143.5 μM for the higher range of H2O2 concentrations (second region). The prepared ZnO NRs show excellent electrocatalytic activity. This enables a measurable and stable output current. The results were correlated with the oxidation process of the H2O2 and revealed a good performance for the ZnO NR non-enzymatic H2O2 sensor.

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