Hydrogen generation by photoelectrochemical splitting of water by using CdS/TiO2 nanotube photoanode

Kuan Wen Lin, Fa Lin, Kao Kan Hsu, Bo Shing You, Huey Ing Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this study, hydrogen is generated from water via photoelectrochemical (PEC) process by using CdS/TiO2 photoanode, which is obtained in sequence chemical bath deposition (s-CBD) process. Experimentally, the CdS was deposited on TiO2 NTAs in s-CBD process. First, the TiO2 NTAs is immersed in Cd(NO3)2 and Na2S solution subsequently several cycles followed by annealing to get CdS/TiO2 photoanode. In this work, the factors were studied including immersion cycle, annealing temperature and UV illumination. The surface morphology, crystalline structure and CdS amount were characterized by SEM and XRD. The photoactivities of CdS/TiO2 photoanodes and hydrogen generation rate were investigated by PEC splitting of water. The results showed that the photoanode annealing in air at 300 °C had the highest photoactivity and the crystalline structure of CdS was composed of zinc blende and a small amount of wurtzite. The saturated current density was 6.163 mA/cm2 and the maximum photoelectrochemical conversion was 4.45 % under Xenon lamp (I0 = 100 mW/cm2) illumination. Besides, the photoactivity of CdS(UV)/TiO 2 prepared under UV (λmax=253.7 nm) illumination was reduced. This was probably due to the aggregation of CdS. To sum up, the CdS/TiO2 photoanodes for photoelectrochemical splitting water could be a high prospective process of the energy source.

Original languageEnglish
Title of host publicationFrontier of Nanoscience and Technology
PublisherTrans Tech Publications Ltd
Pages403-407
Number of pages5
ISBN (Print)9783037852101
DOIs
Publication statusPublished - 2011

Publication series

NameMaterials Science Forum
Volume694
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Hydrogen generation by photoelectrochemical splitting of water by using CdS/TiO<sub>2</sub> nanotube photoanode'. Together they form a unique fingerprint.

Cite this