Electroreduction of α-glucose on CNT/graphite electrode modified by Zn and Zn–Fe alloy
| Autor: | Shouzhuo Yao, Lihua Nie, Yafei Kuang, Jinhua Chen, Guohong Deng, Shidong Fei |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Materials science
Scanning electron microscope Alloy Metallurgy Chemical vapor deposition Carbon nanotube engineering.material Condensed Matter Physics Electrosynthesis Electrochemistry law.invention Chemical engineering law Electrode engineering General Materials Science Graphite Electrical and Electronic Engineering |
| Zdroj: | Journal of Solid State Electrochemistry. 9:498-503 |
| ISSN: | 1433-0768 1432-8488 |
| DOI: | 10.1007/s10008-004-0585-y |
| Popis: | Electroreduction of α-glucose to form sorbitol on Zn/CNTs and Zn alloy/CNTs electrodes has been investigated in this paper. Carbon nanotubes (CNTs) used in this paper are grown directly on graphite disks by chemical vapor deposition. Zn and Zn alloy are electrodeposited on the activated CNTs/graphite electrode by pulse galvanostatic method. The micrographs of Zn/CNTs and Zn alloy/CNTs electrodes are characterized by scanning electron microscopy. The results show that the current efficiency of α-glucose reduction on CNTs electrodes is much better than that on flat Zn electrodes. The order of the current efficiency on different electrodes is as follows: Zn/CNT (0.58) ≈ Zn–Fe/CNT (0.57)>Zn–Ni/CNT (0.43) ≈ Zn/graphite (0.42)>Zn (0.40). It indicates that CNTs have good potential application in electrosynthesis. Additionally, effects of some operating parameters, such as pH, temperature and α-glucose concentration, on the current efficiency of α-glucose reduction are also discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink