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Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Catalytic effects; Distilled water; Dithionite; Fast oxidation; Large surface area; Mesoporosity; Mesoporous SBA-15; Mesoporous Silica; Mesoporous silica nanoparticles; Nano-materials; Neutral solution; Oxidative process; Oxygen radical; PBS solution; PH-dependent; Phosphate buffers; Phosphate-buffered salines; Postsynthesis; Silica nanoparticles; Silica Sphere; Solid silica; Surface area; Templating
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Full-Text Articles in Physical Sciences and Mathematics
Accelerated Oxidation Of Epinephrine By Silica Nanoparticles, Zhimin Tao, Gang Wang, Jerry Goodisman, Tewodros Asefa
Accelerated Oxidation Of Epinephrine By Silica Nanoparticles, Zhimin Tao, Gang Wang, Jerry Goodisman, Tewodros Asefa
Chemistry - All Scholarship
We have measured the influence of mesoporous silica (MCM-41 and SBA-15) nanoparticles and dense silica nanoparticles on epinephrine oxidation, a pH-dependent reaction, whose rate is small in acidic or neutral solutions but much greater at higher pH. The reaction was measured by monitoring adrenochrome at 480 nm, the product of epinephrine oxidation. In distilled water (dH 2O) with no particles present, the oxidation of epinephrine occurs slowly but more rapidly at higher pH. The presence of MCM-41 or silica spheres does not accelerate the oxidation, but SBA-15 does, showing that the difference in the structures of nanomaterials leads to …