Electrospun PLA nanofibers have a large specific surface area, adjustable porosity, and good biocompatibility, which are beneficial to cell respiration, inhibit bacterial infection of wounds, and can promote cell proliferation and accelerate wound healing. In addition, PLA has good biodegradability and can better meet the current new requirements for the development of environmentally friendly materials. It is a new development direction in the field of wound dressing research and development in the future.
The concept and experimental breakthrough of overcoming the high energy barrier of N2 absorption and activation by adjusting the pz orbital center of boron in S-B / CNFs are proposed. It was found that the heteroatom doping of S atom caused the change of the pz orbital center position of B, which was beneficial to the adsorption of N2 on S-C-B site and reduced the energy barrier of the rate determining step. The relationship between P-band center and NRR activity of heteroatom doped carbon catalyst was revealed by calculation and experiment.