GONG-RU LIN2020-06-112020-06-11200916874110https://www.scopus.com/inward/record.uri?eid=2-s2.0-73449137879&doi=10.1155%2f2009%2f384601&partnerID=40&md5=6ea57b72bc5cb5318ff4a4c9bb0f4091Electrochemical characterization of the uniformly dispersed Pt and Ag nanodots synthesized after in situ scalable electron-beam reduction on copper grid and carbon-fiber electrode is demonstrated. By employing plasma pretreatment to produce functional organosilicon micronetworks-based reaction sites on copper grid, the size and standard deviation of the electrochemically reduced metallic nanodots can be strictly confined. When detuning the accelerating voltage of electron-beam from 3 to 120kV, the reshaped nanodot diameter enlarges from 12.7±0.8 to 18.3±3.6 nm due to the gradual self-aggregation. In comparison with sputtering method, the electroactivity of Pt nanodot covered carbon fiber electrode obtained after electron-beam reduction exhibits a larger electroactive surface (S pt) of 16.56 cm 2 /mg. The electron-beam reduction provides a better dispersion of the reduced Pt nanodots based catalysts on carbon-fiber electrode, promoting the utilization efficiency of these nanoscale catalyst (defined as the ratio of electroactive to geometric area) from 2.5% to 7%.Copyright © 2009 Y.-H. Pai and G.-R. Lin.journal article10.1155/2009/3846012-s2.0-73449137879