Noble Metal Supported Electrospun Nanofiber-based Catalysts: Fabrication And Performance Study

In the past few years, catalytic nanomaterials have been widely used in social life, the application of catalytic nanomaterials were widely researched by scientific research workers, so the research is becoming one of the most popular scientific research fields. Because of its unique surface area, high porosity and size effect, the research focusing on high efficient catalytic efficiency of the catalyst material, has been extensively studied. A series of catalytic nanomaterials were studied, such as transition metal oxide nanocatalyst, carbon nanocatalysts, metal nanocatalyst and other materials. Metal catalyst is one of the most important catalysts, especially the research of the catalytic materials of noble nanometal.However, the noble metal nanocatalysts,such as Pt, Pd, etc.,of particles are expensive and very easy to reunite, leading to the lower catalytic efficiency. Therefore, the research of the nanofiber-based catalytic materials got widely reasearched to solve the problem of reunification of noble metals. Noble metals can be loaded on some nanomaterial-based support, such as nanofibers. Through the technique of electrospinning, one-dimensional nanofiber materials could be easily fabricated, then the noble metal nanoparticles were loaded on the surface of the fibers, thus we can not only solve the problem of the reunification of the noble metal nanoparticles, but also we get high catalytic efficiency of the nanocatalytic.In this thesis, through the electrospinning technology and calcination process, we have prepared one-dimensional ceramic nanofibers, and the noble metal nanoparticles are loaded on the surface of ceramic nanofibers, and the electrospinning-based noble metal composite nanofibers materials were prepared.1. We have used the electrospinning technology and the calcination process, a new type of perovskite strontium titanate nanofibers were prepared, which was then loaded with different content of Pt by one-step reduction method to produce SrTiO₃ / Pt composite nanofibers, and the studied their photocatalytic properties.2. We have prepared titanium dioxide through the electrospinning technique, and then polypyrrole/Pd were decorated on the surface ofTiO₂ nanofibers, and studied the chemical catalytic performance toward the reduction of nitrophenol of the as-preparedTiO₂/PPy/Pd nanofibers.