Electrochemical Characterization of Platinum Nanotubules Made via Template Wetting Nanofabrication
Template wetting nanofabrication of platinum nanotubules. (a) A porous alumina template is wetted with a solution of platinum (II) 2,4-pentanedionate (Pt(acac)2) and poly(D,L-lactide) (PDLLA) in chloroform. (b) After evaporation of the solvent, a solid Pt(acac)2/PDLLA film coats template pores. (c) Excess material on the outer surfaces is removed using a helium plasma etch, followed by (d) annealing in air to both reduce the Pt(acac)2 to Pt0 and oxidize and remove the PDLLA. (e) Finally, a 2 min etch in 25 wt% KOH(aq) is used to selectively etch the alumina template and expose the Pt nanotubules.
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