Open AccessDeposition of platinum nanoparticles on p‐type macroporous silicon wall
Author(s) -
Wang Mei,
Wang Xiaohong,
Ghoshal Sarmishtha
Publication year - 2013
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2013.0119
Subject(s) - platinum , platinum nanoparticles , deposition (geology) , nanoparticle , materials science , silicon , nanotechnology , chemical engineering , chemistry , metallurgy , catalysis , organic chemistry , geology , engineering , paleontology , sediment
A novel thermochemical technique of depositing platinum nanoparticles (PtNPs) on a porous silicon (PS) substrate is demonstrated. Self‐arranged macroporous structures, appearing as microtest tubes, are first formed on p‐type, boron doped, 100 orientation silicon wafers, by the electrochemical etching method in hydrofluoric acid and N , N ‐dimethyl formamide solution. The macroPS substrate is then coated with PtNPs by a novel thermochemical procedure. It was observed that PtNPs deposited on the pore walls are able to arrive even at the bottom of the pores without blocking their openings. Such PtNPs‐coated macroPS chips have potential biomedical applications as silicon and platinum are biocompatible.