A general approach to electrochemical deposition of high quality by qwc99136

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									                                Supplementary Material (ESI) for Chemical Communications
                                  This journal is (c) The Royal Society of Chemistry 2009



Supplementary Information


 A general approach to electrochemical deposition of high quality

    free-standing noble metal (Pd, Pt, Au, Ag) sub-micron tubes

          composed of nanoparticles in polar aprotic solvent



                                  Chunhua Cui, Hui-Hui Li, Shu-Hong Yu*




                                       (111)
             Intensity (a.u.)




                                               (200)

                                                                                 (311)
                                                                  (220)




                                30       40        50        60        70        80         90
                                                       2 Theta (deg.)

Fig. S1 XRD parttern of the Pd STNs after removal of AAO template with NaOH (2.0
M).




                                                                                                 S1
                                             Supplementary Material (ESI) for Chemical Communications
                                               This journal is (c) The Royal Society of Chemistry 2009




Fig. S2 SEM images of dispersed Pd STNs under high intensity ultrasound treatment at
different magnifications.




                                      50
      Quantity Adsorbed (cm3/g STP)




                                                                   Adsorption
                                                                   Desorption
                                      40


                                      30


                                      20


                                      10


                                       0

                                           0.0         0.2           0.4           0.6           0.8     1.0
                                                           Relative Pressure (P/Po)

Fig. S3 N2 adsorption-desorption isotherm of the Pd STNs with the diameters of about
300 nm under high intensity ultrasound dispersion.




                                                                                                               S2
                             Supplementary Material (ESI) for Chemical Communications
                               This journal is (c) The Royal Society of Chemistry 2009




     Intensity (a.u.)         (111)




                                      (200)
                                                                                    311
                                                                 (220)




                        30     40          50           60           70          80       90
                                            2 Theta (deg.)
Fig. S4 XRD pattern of the Pt STNs after removal of AAO template with NaOH solution
(2.0 M).




                                                                                               S3
                     Supplementary Material (ESI) for Chemical Communications
                       This journal is (c) The Royal Society of Chemistry 2009




Fig. S5 a) Side-view SEM image of the Pt STNs. The obvious orifice marked “I” near the
bottom and the “II” at the tip. b) Side-view SEM image of the Pt STNs at higher
magnification. c) TEM images of Pt STNs at different magnifications after high intensity
ultrasound treatment. d) The corresponding EDS of the Pt STNs. e,f) HRTEM images of
Pt STNs near the orifice at different magnifications.




                                                                                      S4

								
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