Preparation and hydrogen absorption/desorption of nanoporous palladium thin films

Wen Chung Li, Thomas John Balk

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Nanoporous Pd (np-Pd) was prepared by co-sputtering Pd-Ni alloy films onto Si substrates, followed by chemical dealloying with sulfuric acid. X-ray diffractometry and chemical analysis were used to track the extent of dealloying. The np-Pd structure was changed from particle-like to sponge-like by diluting the sulfuric acid etchant. Using suitable precursor alloy composition and dealloying conditions, np-Pd films were prepared with uniform and open sponge-like structures, with interconnected ligaments and no cracks, yielding a large amount of surface area for reactions with hydrogen. Np-Pd films exhibited shorter response time for hydrogen absorption/desorption than dense Pd films, showing promise for hydrogen sensing.

Original languageEnglish
Pages (from-to)2496-2509
Number of pages14
Issue number4
StatePublished - 2009


  • Dealloying
  • Hydridation
  • Nanoporous
  • Palladium

ASJC Scopus subject areas

  • Materials Science (all)


Dive into the research topics of 'Preparation and hydrogen absorption/desorption of nanoporous palladium thin films'. Together they form a unique fingerprint.

Cite this