Pre-synthesized nanoparticulate ruthenium dioxide (RuO2 NP) was successfully immobilized into ordered mesopores silica SBA-15 by simple calcination. It is determined that RuO2 NP is well dispersed inside the pores with low level of aggregation, via the transmission electron microscopy (TEM), X-ray diffraction (XRD) and nitrogen sorption. As a catalyst for the oxidation of water by Ce(IV) salts, the supported RuO2 NP exhibits significantly higher activity compared to the previously reported RuO2 catalysts. The initial turnover frequency (TOF) is 0.27 s-1 at 0.5 M H2SO4 aqueous solution and 20 oC, the highest among all reported comparable RuO2 catalysts. Its recyclability is demonstrated by the retained catalytic activity after 15 cycles of reaction, indicating a turnover number (TON) of at least 200. 

Ruthenium oxide nanoparticulates supported on mesoporous silica as efficient catalyst for water oxidation

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.