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Electroreduction of α-glucose on CNT/graphite electrode modified by Zn and Zn–Fe alloy

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Abstract

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.

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Acknowledgments

This work is supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry under the grant 2001-498 and by the National Natural Science Foundation of China under the grants 50172014 and 20275009.

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Authors and Affiliations

  1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R.China

    Shidong Fei, Jinhua Chen, Shouzhuo Yao, Guohong Deng, Lihua Nie & Yafei Kuang

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  1. Shidong Fei
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  2. Jinhua Chen
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  3. Shouzhuo Yao
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  4. Guohong Deng
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Correspondence to Jinhua Chen.

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Fei, S., Chen, J., Yao, S. et al. Electroreduction of α-glucose on CNT/graphite electrode modified by Zn and Zn–Fe alloy. J Solid State Electrochem 9, 498–503 (2005). https://doi.org/10.1007/s10008-004-0585-y

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  • DOI: https://doi.org/10.1007/s10008-004-0585-y

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