Efficient Multifunctional Catalytic and Sensing Properties of Synthesized Ruthenium Oxide Nanoparticles
, 6. Ruby Phul , Mohammad Perwez , Jahangeer Ahmed , Meryam Sardar , Saad M. Alshehri , Norah Alhokbany , Mohd A. Majeed Khan and Tokeer Ahmad . 2020
Abstract: Ruthenium oxide is one of the most active electrocatalyst for oxygen evolution (OER) and
oxygen reduction reaction (ORR). Herein, we report simple wet chemical route to synthesize RuO2
nanoparticles at controlled temperature. The structural, morphological and surface area studies of the
synthesized nanoparticles were conducted with X-ray diffraction, electron microscopy and BETsurface
area studies. The bifunctional electrocatalytic performance of RuO2 nanoparticles was studied under
different atmospheric conditions for OER and ORR, respectively, versus reversible hydrogen electrode
(RHE) in alkaline medium. Low Tafel slopes of RuO2 nanoparticles were found to be ~47 and
~49 mV/dec for OER and ORR, respectively, in oxygen saturated 0.5 M KOH system. Moreover,
the catalytic activity of RuO2 nanoparticles was examined against the Horseradish peroxidase enzyme
(HRP) at high temperature, and the nanoparticles were applied as a sensor for the detection of H2O2
in the solution.
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