Preparation of Platinum Catalysts Supported on Oxygen-Boron Co-Modification Multi-Wall Carbon Nanotubes and Their Oxygen Reducing Activity

We synthesized an oxygen-boron co-decorated multi-walled carbon nanotube material by a simple method. After that, it was used as a carrier to prepare platinum-based catalysts and carried out a variety of characterizations. The results indicated that the platinum particles supported on this carrier showed smaller particle size, higher electrochemical surface area (40 m(2).g(Pt)(-1)), and higher oxygen reduction activity (0.3 A.mg(Pt)(-1)). Predictably, boron and oxygen play an important role in improving the dispersion of carbon nanotubes, controlling the uniformity and size of platinum particles, and promoting oxygen adsorption/dissociation in the oxygen reduction reaction.