Fabrication of thiol-capped Pd nanoparticles: An electrochemical method

Zhang, P.; Sham, T. K.
March 2003
Applied Physics Letters;3/17/2003, Vol. 82 Issue 11, p1778
Academic Journal
A simple electrochemical method is developed to prepare thiol-capped Pd nanoparticles on a Si (100) surface by reducing Pd[sup 2+] in solution in the presence of thiol molecules. The structure, bonding, and electronic properties of the electrodeposited Pd nanoparticles (NPs), together with a series of Pd model systems, were studied by electron microscope and x-ray absorption spectroscopy at the S K-edge and the Pd L[sub 3,2]-edge. The thiol-capped electrodeposits are found to be metallic Pd particles of a few nanometers, with local structures and electronic behavior considerably different from the non-thiol-capped electrodeposits, but rather comparable to colloidal thiol-capped NPs.


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