Solar hydrogen generation over CdS incorporated in Ti-MCM-48 mesoporous materials under visible light illumination

Rui Peng, Chia Ming Wu, Jonas Baltrusaitis, Nada M. Dimitrijevic, Tijana Rajh, Ranjit T. Koodali

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

MCM-48 cubic mesoporous materials containing CdS and spatially isolated titania nanoclusters were prepared in this study. Powder X-ray diffraction (XRD), nitrogen adsorption isotherm, transmission electron microscopy (TEM), atomic absorption spectrophotometry (AAS), UV-Visible diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR) studies were employed for the characterization of the CdS containing Ti-MCM-48 mesoporous materials. In the current study, all the samples showed photocatalytic activity under visible light (λ > 400 nm) irradiation for production of hydrogen from splitting of water without Pt as a co-catalyst. The solar hydrogen evolution rate by visible light irradiation seemed to be dependent on CdS and TiO2 content and the most active photocatalyst produced hydrogen at a rate of 2.726 mmol/h/gcatalyst. The apparent quantum yield of the most active photocatalyst was estimated to be 36.3%.

Original languageEnglish (US)
Pages (from-to)4106-4119
Number of pages14
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number7
DOIs
StatePublished - Feb 23 2016
Externally publishedYes

Keywords

  • CdS/TiO
  • Coupled semiconductor
  • Hydrogen evolution
  • MCM-48
  • Photocatalysis
  • Visible light

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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