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Hydrogen Generation from CDS Modified-Titania Nanotube Arrays

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Abstract:

A heterogeneous structured photo electrode using CDS -modified TiO2 nanotube arrays (TNA) was fabricated. The CDS nano particles were precipitated by immersing TNA into NaS and Cd (ClO4)2solution, where the number of immersion gave different amount of CDS precipitates. The effect of CDS on the performance of photochemical cell of TNA was evaluated. FESEM, EDS, XRD and UV-Visible were employed to characterize the structures and properties of CDS -modified TNA heterogeneous structure. The water splitting experiments were carried out using these CDS -modified TNA under standard AM 1.5 solar illumination (100mW/cm2>). An optimum hydrogen generation rate of 20.61μmole/cm2>)h (~0.50 ml/cm2>)h) was obtained. It was considered that the smaller band gap of CDS rendered the electrons a rapid transportation to the TiO2nanotube arrays and the recombination of electron-hole was therefore effectively prevented. In summary, the CDS nano particles were effective in promoting the catalytic effect of TNA for hydrogen production.

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Advanced Materials Research II View Preview

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Periodical:

Advanced Materials Research (Volumes 463-464)

Pages:

743-747

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.463-464.743

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Online since:

February 2012

Authors:

Ygin Chieh Chen, Jia You Liou, Wen Jie Lan, Jyun Yu Chen, Hong Wen Wang

Keywords:

CdS, Hydrogen Generation, Nanotube Arrays, Titania

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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