Comparation of electrochemical and photosensitivity of silver (Ag) and graphene oxide (GOx) thin film for blood glucose monitoring

Pramitha Y.D. Maulida, Annisa I. Maharani, Aysya A. Basyari, Nasori Nasori*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Blood glucose measurement has become a key factor for early detection of various diseases. Therefore, a highly sensitive glucose sensor is necessary for effective measurement. Silver (Ag) has shown a great potential to be used as sensor in glucose monitoring. However, most sensors developed so far still lack in sensitivity, particularly those fabricated out of material with low surface-to-volume ratio such as 0-dimensional Ag nanoparticles. On the other hand, a multidimensional structure is a promising way to enhance the sensitivity of sensor, as it could increase the active surface area. This research aims to analyze the influence of graphene oxide (GO) as 2D material to the performance of Ag thin film glucose biosensor. GO was synthesized using modified Hummer's method, and the fabrication of thin film was done using nano spray. The resulting thin films were characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS), cyclic voltammetry (CV), and their photosensitivity was analyzed. Analysis using XRD confirms GO structure with high interlayer distance. SEM analysis shows that the sample has flake-like morphology characteristic of GO, and some impurities are still present in the sample as confirmed by EDS analysis. CV analysis shows the Ag/GO has higher electrochemical response than Ag thin film as well as increased sensitivity for glucose measurement. Analysis of Ag/GO thin film also shows that its photosensitivity still needs to be improved, as its response is still lower than that of commercial photodiode. It can be concluded that Ag/GO thin film is more suitable for invasive glucose detection compared to non-invasive method.

Original languageEnglish
Title of host publication2nd International Symposium on Physics and Applications 2021
EditorsRetno Asih, Nasori, Saifuddin, Muhammad Haekal
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735444676
DOIs
Publication statusPublished - 9 May 2023
Event2nd International Symposium on Physics and Applications 2021, ISPA 2021 - Surabaya, Indonesia
Duration: 13 Nov 202114 Nov 2021

Publication series

NameAIP Conference Proceedings
Volume2604
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2nd International Symposium on Physics and Applications 2021, ISPA 2021
Country/TerritoryIndonesia
CitySurabaya
Period13/11/2114/11/21

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