Synthesis of hierarchical mesoporous graphite oxide/Al2O3 from MIL-100(Al) for the electrochemical determination of caffeic acid in red wine samples

Kulandaivel Sivasankar, Rajkumar Devasenathipathy, Sea Fue Wang*, Karuppasamy Kohila rani, Duraisamy Senthil Raja, Chia Her Lin

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

19 引文 斯高帕斯(Scopus)

摘要

We have synthesized the hierarchical mesoporous graphite oxide (HMGO) through simple single step carbonization method by using MIL-100(Al) metal-organic framework as a template. To study the influence of temperature in the synthesis of HMGO, various carbonization temperatures (700, 800, and 900 °C) were fixed without any additional carbon sources. The newly prepared HMGO showed uniform morphology, pore-size distribution centered on 10 nm with high surface area (370–470 m2/g) and excellent electrochemical ability. Hence, we have constructed an amperometric sensor for the trace level detection of caffeic acid (CA) by using HMGO as a modifier in glassy carbon electrode (GCE). The good electro catalytic activity of HMGO film modified GCE can be explained from the low over potential and high redox peak current obtained toward the detection of CA. Our demonstrated sensor works in a wide linear range (0.01–608 µM) with low limits of detection (0.004 µM) and high sensitivity (429 µA/mM/cm2). In addition, the selective determination of CA even in presence of other interfering molecules, reveals the good selectivity of HMGO/GCE. The commercially available wine samples were further utilized to demonstrate the practical feasibility of HMGO modified GCE. The acceptable values of stability, repeatability and reproducibility also support the practical applications of our fabricated electrode.

原文英語
頁(從 - 到)188-195
頁數8
期刊Journal of the Taiwan Institute of Chemical Engineers
84
DOIs
出版狀態已發佈 - 2018 3月
對外發佈

ASJC Scopus subject areas

  • 一般化學
  • 一般化學工程

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