New spectrometer helps identify alternative catalyst materials for affordable hydrogen fuel cells phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.
One-dimensional fiber architecture serves as an excellent catalyst support. The orderly arrangement of active materials on such a fiber substrate can enhance catalytic performance by exposing more active sites and facilitating mass diffusion; however, this remains a challenge. We developed an interfacial assembly strategy for the orderly distribution of metal nanocrystals on different fiber substrates to optimize their electrocatalytic performance. Using electrochemical nitrate reduction reaction (NO3−RR) as a representative reaction, the iron-based nanofibers (Fe/NFs) assembly structure achieved an excellent nitrate removal capacity of 2317 mg N/g Fe and N2 selectivity up to 97.2 %. This strategy could promote the rational design and synthesis of fiber-based electrocatalysts.
MIT physicists have detected a hybrid particle that is a mashup of an electron and a phonon, “glued” together with an exceptionally strong bond. It may be possible to tune the two components in tandem, enabling scientists to apply voltage or light to a material to tune not just its electrical properties but also its magnetism.
Physics is the science that studies and describes the fundamental nature and behavior of physical systems. Physical systems, with their measurable prope.