Fabrication of the Eosin Y-MWNTs-NiO Photocatalytic System and Its Photocatalytic Activity for H2 Evolution from Water

doi:10.3969/j.issn.0251-0790.2012.09.036

Abstract

Abstract:

A photocatalytic system containing Eosin Y, multiwalled carbon nanotubes(MWNTs) and NiO (Eosin Y-MWNTs-NiO) was fabricated and activated by hydrogen reduction treatment. The photocatalytic hydrogen evolution over this photocatalytic system was investigated using triethanolamine as a sacrificial reagent. The results displayed that the Eosin Y-MWNTs-NiO was an efficient photocatalyst with the highest rate of H₂ evolution of 344 μmol·g^-1·h^-1 under visible light irradiation. Therein, the hydrogen reduction treatment played an important role in the improvement of photocatalytic activity. The activity of the photocatalytic system Eosin Y-MWNTs-6%NiO unactivated by hydrogen was only one-tenth of that of the activated one. Moreover, the photocatalytic hydrogen evolution was studied as functions of pH of the solution and dosage of the catalyst, respectively. Based on the results obtained, the mechanism was discussed preliminarily.

Key words: Eosin Y, Carbon nanotubes, NiO, Photocatalytic hydrogen evolution

CLC Number:

O643

TrendMD:

MU Jin, CHEN Li-Li, KANG Shi-Zhao, LI Xiang-Qing. Fabrication of the Eosin Y-MWNTs-NiO Photocatalytic System and Its Photocatalytic Activity for H₂ Evolution from Water[J]. Chem. J. Chinese Universities, 2012, 33(09): 2080.

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Fabrication of the Eosin Y-MWNTs-NiO Photocatalytic System and Its Photocatalytic Activity for H₂ Evolution from Water

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