Correlation between palladium chemical state and photocatalytic performance of TiO2-Pd based nanoparticles

Ming Chung Wu*, I. Chun Chang, Wei Kang Huang, Yu Chieh Tu, Che Pu Hsu, Wei Fang Su

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

14 Scopus citations


Photocatalytic processes can be used to illustrate both solar energy conversion and environmental friendly applications. In this study, we synthesize several titanium dioxide-palladium (TiO2-Pd) based catalysts by wet impregnation method plus hydrogen-thermal reduction process in order to develop high-effective photocatalysts that can be easily produced even in industrial quantities. Moreover, we examine the effects of hydrogen-thermal reduction process on the photocatalytic performance of TiO2-Pd based catalysts. From X-ray photoelectron spectroscopy analysis, increasing the hydrogen reduction process time results in the decreasing of palladium ion (Pd2 +) and palladium oxide (PdO), but it causes the increasing of palladium (Pd) metal. The hydrogen reduction process is helpful for the preparation of TiO2-Pd based catalysts with high photocatalytic decomposition of organic dyes (the apparent reaction rate constant ∼ 0.124 min- 1 under solar simulator irradiation) and excellent photocatalytic hydrogen production rate (∼ 26,000 μmol/g·h under UV-B irradiation). The TiO2-Pd based catalysts prepared in this study exhibit high photocatalytic performance. They are also industrially relevant especially when the low cost of Pd metal is taken into consideration.

Original languageEnglish
Pages (from-to)371-375
Number of pages5
JournalThin Solid Films
Issue numberPB
StatePublished - 03 11 2014

Bibliographical note

Publisher Copyright:
© 2014 Elsevier B.V.


  • Photocatalytic hydrogen production
  • Photodegradation
  • TiO Photocatalyst
  • X-ray photoelectron spectroscopy


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