基于结构可调Au-ZnO 纳米材料的光催化氢发生系统

With the increasingly serious global energy crisis, the development of clean and renewable energy has become a focus and major strategy of great concern to all countries. In the field of new energy, solar photolysis of water to produce hydrogen has been generally regarded as an ideal and pollution-free green energy development technology. However, the current efficiency of photocatalytic hydrogen production equipment is low, and the development of efficient hydrogen production systems is particularly important. Thermionics induced by metal plasmons are widely used in high-efficiency photocatalytic hydrogen production driven by thermionics. This work has designed a set of photocatalytic hydrogen generation system with adjustable Au-ZnO composite nanostructure as the catalytic coating. The Lamb back reflection layer and surface texturing technology are used to make light repeatedly pass through the catalytic coating, which can be significantly The production of hydrogen is increased, and the manufacturing and operating costs are low. Compared with the catalytic equipment using heavy metal materials, it has less environmental pollution. The catalytic coating is based on the prepared Au-ZnO composite nano material, which has a structure with extremely high plasma-enhanced photocatalytic hydrogen production activity. The wavelength-dependent photocatalytic hydrogen production experiment proved that the coating material has extremely high apparent quantum efficiency under resonance excitation. The ultra-fast transient absorption measurement results show that the coating material has extremely high plasmon-induced hot electron injection efficiency, which greatly improves the photocatalytic activity of the device.