Hybrid architecture of Rhodium oxide (cas 12680-36-3) nanofibers and ruthenium oxide nanowires for electrocatalysts

Add time:08/28/2019    Source:sciencedirect.com

We report the synthesis and electrochemical performances of the hybrid architecture of Rhodium oxide (cas 12680-36-3) (Rh2O3) nanofibers (NF) and highly single crystalline RuO2 nanowires (NW) by combining the electrospinning process and a simple recrystallization process. The amorphous Ru(OH)3·xH2O precursors at relatively low temperature were efficiently transformed into highly single crystalline RuO2 nanowires with the tetragonal rutile structure on electrospun Rh2O3 nanofibers. Pure Rh2O3 NF and hybrid RuO2 NW–Rh2O3 NF exhibited different electroactivities toward H2O2 electrochemical reaction: Rh2O3 NF facilitates the H2O2 oxidation vs. hybrid RuO2 NW–Rh2O3 NF promotes H2O2 reduction more favorably. The H2O2 reduction free from O2 reduction interference at RuO2 NW–Rh2O3 NF is advantageous and finds the feasibility for selective H2O2 detection in various samples. Furthermore, RuO2 NW–Rh2O3 NF generated a greatly higher current induced by H2O2 reduction (i.e., enhanced sensitivity to H2O2) than bare Rh2O3 NF.

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