Nitrate uptake using mesoporous silica embedded with zero-valent palladium nanoparticles
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This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by-nc/3.0/
This work is supported by the Australian Research Council, The Perth Mint, and the Government of South Australia
In situ reduction of palladium(II) acetylacetonate during the synthesis of SBA-15 mesoporous silica affords a material impregnated with palladium nanoparticles. The synthesis is at neutral pH and ambient conditions using a continuous flow vortex fluidic device with high shear dynamic thin films, followed by calcination. The SBA-15 is available with considerably reduced processing time relative to the conventional synthesis of mesoporous silica, with the material being effective for nitrate-nitrogen [NO3−-N] removal from aqueous solutions, at 41% within the first 16 hours, or around 36% for the same period after being recycled.