Explanation

nano catalysis refers to the catalytic reaction process that takes place on the surface of catalytic surface of materials with nanoscale structure, as well as the unique catalytic effect due to the nanoscale of the catalyst. Typical nano catalysts include zero dimensional nanoparticles or nanoclusters, one-dimensional nanowires, nanorods and nanotube, and two-dimensional nano films. The reactions on these nanostructures usually show different catalytic properties from those of bulk phase materials. The changes in catalytic properties are generally caused by factors such as nano size effects, nano morphology effects, nano interface effects, and nano confinement effects. For example, bulk phase gold has always been considered as catalytic inert, but nano gold has shown excellent catalytic performance in many reactions. The catalytic reactions in the nanopores within molecular sieves typically exhibit excellent selective catalytic effects. In recent years, due to the development of nano synthesis methods, controllable design and assembly of nanomaterials can be realized. At the same time, the advancement of nano characterization technology enables the study of catalytic reaction processes on the surface of nanostructures at the atomic and molecular scales. These developments have greatly promoted the design and development of new nanocatalyst systems, which are expected to solve many major problems faced in the development of energy, environment, health, and other fields.

Classification