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Improved Performance for the Electrochemical Sensing of Acyclovir by Using the rGO-TiO2-Au Nanocomposite-Modified Electrode.

ABSTRACT: An electrochemical sensor for sensitive sensing of acyclovir (ACV) was designed by using the reduced graphene oxide-TiO2-Au nanocomposite-modified glassy carbon electrode (rGO-TiO2-Au/GCE). Transmission electron microscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy were used to confirm morphology, structure, and composition properties of the rGO-TiO2-Au nanocomposites. Cyclic voltammetry and linear sweep voltammetry were used to demonstrate the analytical performance of the rGO-TiO2-Au/GCE for ACV. As a result, rGO-TiO2-Au/GCE exerted the best response for the oxidation of ACV under the pH of 6.0 PB solution, accumulation time of 80 s at open-circuit, and modifier amount of 7 µl. The oxidation peak currents of ACV increased linearly with its concentration in the range of 1-100 µM, and the detection limit was calculated to be 0.3 µM (S/N = 3). The determination of ACV concentrations in tablet samples also demonstrated satisfactory results.

SUBMITTER: Lu XY 

PROVIDER: S-EPMC9130495 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Improved Performance for the Electrochemical Sensing of Acyclovir by Using the rGO-TiO<sub>2</sub>-Au Nanocomposite-Modified Electrode.

Lu Xin-Yang XY   Li Jing J   Kong Fen-Ying FY   Wei Mei-Jie MJ   Zhang Pei P   Li Ying Y   Fang Hai-Lin HL   Wang Wei W  

Frontiers in chemistry 20220511

An electrochemical sensor for sensitive sensing of acyclovir (ACV) was designed by using the reduced graphene oxide-TiO<sub>2</sub>-Au nanocomposite-modified glassy carbon electrode (rGO-TiO<sub>2</sub>-Au/GCE). Transmission electron microscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy were used to confirm morphology, structure, and composition properties of the rGO-TiO<sub>2</sub>-Au nanocomposites. Cyclic voltammetry and linear sweep voltammetry were used to demonstrate the a  ...[more]

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