In Situ Assembly Of Well-dispersed Gold Nanoparticles On Electrospun For Catalytic Reduction Of4-nitrophenol

That smaller nanoscale noble metal particles show a higher catalytic activity asits have a much greater surface to volume ratio. It have attracted tremendous attentionin recent years because of their unusual physical and chemical properties and theirpotential applications in catalysis. As a remarkably simple and versatile technique,electrospinning has been exploited for many years to process polymer intoone-dimensional fibers. The as-electrospun nano fibers might be excellent catalystsupports due to their availability, formability, chemical stability, high specific surfacearea, and one-dimensional nano-structure property. In this paper, we describe hereinan effective route to synthesize gold nanoparticles (AuNPs)/silica porous nanometerfiber with well-dispersed distribution.In that paper, the silica porous nanometer fiber were fabricated by electrospinningthe precursor solution consisting of PVP and TEOS through a facile single capillary,followed by thermal decomposition for removal of the above polymers from theprecursor silica porous nanometer fiber. Then, the small sized AuNPs withwell-dispersed distribution were assembled on the surface of silica porous nanometerfiber via in situ reduction method. The as-prepared porous nanocomposite exhibitedgood activities in catalyzing the reduction of4-nitrophenol by NaBH4in the aqueousphase due to the small size and well-dispersed dispersion of the AuNPs and a highsurface area to volume ratio of silica porous nanometer fiber and easy separation andreusable. Research of this paper for precious metal catalyst solid carrier offers a newcarrier, and provides a new way for the development of new catalytic materials.