Visible-light-assisted photoelectrochemical biosensing of uric acid using metal-free graphene oxide nanoribbons

Chia Liang Sun; Cheng Hsuan Lin; Chia Heng Kuo; Chia Wei Huang; Duc Dung Nguyen; Tsu Chin Chou; Cheng Ying Chen; Yu Jen Lu

doi:10.3390/nano11102693

Visible-light-assisted photoelectrochemical biosensing of uric acid using metal-free graphene oxide nanoribbons

Chia Liang Sun^*, Cheng Hsuan Lin, Chia Heng Kuo, Chia Wei Huang, Duc Dung Nguyen, Tsu Chin Chou, Cheng Ying Chen, Yu Jen Lu^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

2 Scopus citations

Abstract

In this study, we demonstrate the visible-light-assisted photoelectrochemical (PEC) bio-sensing of uric acid (UA) by using graphene oxide nanoribbons (GONRs) as PEC electrode materi-als. Specifically, GONRs with controlled properties were synthesized by the microwave-assisted exfoliation of multi-walled carbon nanotubes. For the detection of UA, GONRs were adopted to modify either a screen-printed carbon electrode (SPCE) or a glassy carbon electrode (GCE). Cyclic voltammetry analyses indicated that all Faradaic currents of UA oxidation on GONRs with different unzipping/exfoliating levels on SPCE increased by more than 20.0% under AM 1.5 irradiation. Among these, the GONRs synthesized under a microwave power of 200 W, namely GONR(200 W), exhibited the highest increase in Faradaic current. Notably, the GONR(200 W)/GCE electrodes revealed a remarkable elevation (~40.0%) of the Faradaic current when irradiated by light-emitting diode (LED) light sources under an intensity of illumination of 80 mW/cm². Therefore, it is believed that our GONRs hold great potential for developing a novel platform for PEC biosensing.

Original language	English
Article number	2693
Journal	Nanomaterials
Volume	11
Issue number	10
DOIs	https://doi.org/10.3390/nano11102693
State	Published - 10 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

GONR
LED
MWCNT
Photoelectrochemical
Uric acid

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Cite this

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abstract = "In this study, we demonstrate the visible-light-assisted photoelectrochemical (PEC) bio-sensing of uric acid (UA) by using graphene oxide nanoribbons (GONRs) as PEC electrode materi-als. Specifically, GONRs with controlled properties were synthesized by the microwave-assisted exfoliation of multi-walled carbon nanotubes. For the detection of UA, GONRs were adopted to modify either a screen-printed carbon electrode (SPCE) or a glassy carbon electrode (GCE). Cyclic voltammetry analyses indicated that all Faradaic currents of UA oxidation on GONRs with different unzipping/exfoliating levels on SPCE increased by more than 20.0% under AM 1.5 irradiation. Among these, the GONRs synthesized under a microwave power of 200 W, namely GONR(200 W), exhibited the highest increase in Faradaic current. Notably, the GONR(200 W)/GCE electrodes revealed a remarkable elevation (~40.0%) of the Faradaic current when irradiated by light-emitting diode (LED) light sources under an intensity of illumination of 80 mW/cm2. Therefore, it is believed that our GONRs hold great potential for developing a novel platform for PEC biosensing.",

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author = "Sun, {Chia Liang} and Lin, {Cheng Hsuan} and Kuo, {Chia Heng} and Huang, {Chia Wei} and Nguyen, {Duc Dung} and Chou, {Tsu Chin} and Chen, {Cheng Ying} and Lu, {Yu Jen}",

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AU - Chou, Tsu Chin

AU - Chen, Cheng Ying

AU - Lu, Yu Jen

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AB - In this study, we demonstrate the visible-light-assisted photoelectrochemical (PEC) bio-sensing of uric acid (UA) by using graphene oxide nanoribbons (GONRs) as PEC electrode materi-als. Specifically, GONRs with controlled properties were synthesized by the microwave-assisted exfoliation of multi-walled carbon nanotubes. For the detection of UA, GONRs were adopted to modify either a screen-printed carbon electrode (SPCE) or a glassy carbon electrode (GCE). Cyclic voltammetry analyses indicated that all Faradaic currents of UA oxidation on GONRs with different unzipping/exfoliating levels on SPCE increased by more than 20.0% under AM 1.5 irradiation. Among these, the GONRs synthesized under a microwave power of 200 W, namely GONR(200 W), exhibited the highest increase in Faradaic current. Notably, the GONR(200 W)/GCE electrodes revealed a remarkable elevation (~40.0%) of the Faradaic current when irradiated by light-emitting diode (LED) light sources under an intensity of illumination of 80 mW/cm2. Therefore, it is believed that our GONRs hold great potential for developing a novel platform for PEC biosensing.

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Visible-light-assisted photoelectrochemical biosensing of uric acid using metal-free graphene oxide nanoribbons

Abstract

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Keywords

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