Decoupling photonic and thermal contributions for photoelectrochemical sensing of melatonin via graphene oxide nanoribbons

Chia Liang Sun*, Hung Yu Chen, Mrinal Poddar, Yu Jen Lu

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

2 引文 斯高帕斯(Scopus)

摘要

This work elucidates the photoelectrochemical (PEC) sensing of melatonin employing graphene oxide nanoribbons (GONRs) synthesized through a microwave-assisted method. GONRs served as electrocatalysts for screen-printed carbon electrodes (SPCE) to facilitate melatonin detection. We incorporated both a light-emitting diode (LED) and a solar simulator as light sources for PEC evaluations. Cyclic voltammetry revealed that the faradaic currents corresponding to melatonin oxidation on GONRs-modified SPCE were amplified under both LED and simulated solar light irradiation. Notably, the GONR (150 W) registered the most pronounced enhancement in the photo-assisted faradaic current and the highest conversion efficiency. Employing the solar simulator, certain thermal factor ratios concerning conversion efficiencies surpassed 50.0% at light intensities of both 80 mW/cm2 and 100 mW/cm2. Conversely, with the LED source, the thermal contribution remained below 15.0% of the total PEC faradaic current. We posit that obtaining conversion efficiencies devoid of thermal influences is pivotal for deepening our comprehension of PEC biosensing mechanisms.

原文英語
文章編號107649
期刊Electrochemistry Communications
159
DOIs
出版狀態已出版 - 02 2024

文獻附註

Publisher Copyright:
© 2023 The Author(s)

指紋

深入研究「Decoupling photonic and thermal contributions for photoelectrochemical sensing of melatonin via graphene oxide nanoribbons」主題。共同形成了獨特的指紋。

引用此