Citation: FANG Xiao-Tong, ZHENG Qing, HUANG Xi-Ming, SHAO Hui-Bo. Direct Electron Transfer of Copper-Benzene-1,3,5-Tricarboxylate on Gold Electrode Surface Modified with 3-Mercaptopropionic Acid Self-assembled Monolayer[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(8): 1180-1187. doi: 10.19756/j.issn.0253-3820.191250 shu

Direct Electron Transfer of Copper-Benzene-1,3,5-Tricarboxylate on Gold Electrode Surface Modified with 3-Mercaptopropionic Acid Self-assembled Monolayer

School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China

Received Date: 3 May 2019
Revised Date: 11 June 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21872006) and the National Key R&D Program of China (No.2017YFB1104300).

The Cu metal organic framework (MOFs) material, copper-benzene-1,3,5-tricarboxylate (Cu-BTC) modified electrode was constructed by anchoring Cu-BTC on the surface of gold electrode (Au) with the aid of 3-mercaptopropionic acid (MPA) self-assembled monolayer (SAM) (Cu-BTC/MPA/Au). The direct electrochemistry of Cu-BTC was realized on the above-mentioned electrode. Fourier transform infrared spectroscopy, scanning electron spectroscopy (SEM) and powder X-ray diffraction (XRD) were used to characterize the MPA SAM and Cu-BTC. Also, SEM and energy dispersive X-ray spectrometry (EDS) were used to characterize Cu-BTC/MPA/Au. The electrochemical properties of Cu-BTC/MPA/Au were characterized by cyclic voltammetry and electrochemical impedance spectroscopy (EIS), and it was found that the electrode had a relatively higher electron transport rate. The results also showed that a short SAM, the MPA SAM, resulted in the faster direct electron transfer of Cu-BTC. The method of anchoring MOFs with self-assembled membrane provided a new insight into the direct electron-transfer process of the Cu-BTC.
- Copper-benzene-1,3,5-tricarboxylate,
- Metal-organic framework,
- Direct electron transfer,
- Self-assembled monolayer
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