Silicone Nanofilament Support Layers in an Open-Channel System for the Fast Reduction of Para-Nitrophenol

Chemical vapor phase deposition was used to create hydrophobic nanostructured surfaces on glass slides. Subsequently, hydrophilic channels were created by sputtering a metal catalyst the while masking outside. The surface tension gradient between in and outside hydrophobicity formed open-channel system. reduction of para-nitrophenol (PNP) studied these devices. When compared nanostructure-free reference systems, nanostructures, namely, silicone nanofilaments (SNFs) nano-bagels, had superior catalytic performance (73% 66% conversion 55% at 0.5 µL/s flow rate using 20 nm platinum) wall integrity; therefore, they could be readily multiple times. nanostructures stable under reaction conditions, as observed with scanning electron microscopy. Transition microscopy studies platinum-modified SNFs revealed that is present nanoparticles ranging up 13 size. By changing target sputter coating unit, molybdenum, gold, nickel copper evaluated for their efficiency. relative order platinum < gold = molybdenum copper. decomposition sodium borohydride (NaBH4) concurrent terminates before completion, despite large excess reducing agent. Gold same two times about four faster than gold. In all cases, there clear improvement catalysis flat