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Citation: ZENG Wei, ZHOU Hai-Hui, YING Xiao-Fang, ZENG Qing-Liang, HU Wei-Ya, KUANG Ya-Fei. Electrodeposition of ld Nanoparticles Coatings from Electrode/ReverseMicroemulsion System[J]. Acta Physico-Chimica Sinica, ;2007, 23(05): 769-773. doi: 10.3866/PKU.WHXB20070529 shu

Electrodeposition of ld Nanoparticles Coatings from Electrode/ReverseMicroemulsion System

1.
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China

Received Date: 1 November 2006
Available Online: 21 April 2007

Au nanoparticles coatings were successfully electrodeposited from an electrode/reverse microemulsion system using the reverse microemulsion composed of Triton X-100, n-hexanol, n-hexane and aqueous ld chloride solution with strong acitity. The electrodeposition process of Au was studied by cyclic voltammograms and electrochemical impedance spectroscopy. The results indicated that the reduction of Au(III) was a completely irreversible process, and the impedance of the electrochemical reaction in the microemulsion was 5.5 times as high as that in water solution. The scanning electron microscopy images showed that the coatings electrodeposited from the reverse microemulsions were made up of ld nanoparticles with diameter about 50 nm. Due to the large specific surface area, the electrochemical reaction activity of the Au nanoparticles modified electrode was higher than that of the pure ld electrode, the Au nanoparticles modified electrode had od hydrogen evolution capability in acid solution and od electrocatalytic capability for glycerol oxidation in alkaline media.
- Reverse microemulsion; Electrodeposition; Nanoparticles; ld coatings
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