2 results about "Micropipe" patented technology

The application discloses a kind of peptide micropipe / In2O3 / Au composite gas-sensitive materials, its preparation method and application, belong to gas-sensitive material technical field.The material is self-assembled peptide micropipe (SPMFs) as three-dimensional support skeleton, by solution mixing and functional modification, make In2O3 nanoparticle uniform dispersion, Au nanoparticle surface load, form ternary composite system.SPMFs porous structure provides stable load platform for nanoparticle and accelerates gas diffusion, the LSPR effect of Au nanoparticle can enhance visible light absorption and surface reactivity, the heterojunction formed by In2O3 and SPMFs regulates electron transport.Under the synergistic effect of the three, material can detect ethanol at room temperature under visible light excitation, with high selectivity, high sensitivity and fast adsorption and desorption characteristics, detection lower limit is as low as 1 ppm, meet the demand of trace ethanol real-time monitoring.

The application discloses a monoclinic phase BiVO4 micropipe prepared by a microwave radiation method and a preparation method thereof. Pure Bi(NO3)3.5H2O and NH4VO3 are used as reaction raw materials, distilled water is used as a solvent, polyethylene glycol (PEG-10000) with a molecular weight of 10000 is used as a surfactant, and a monoclinic phase BiVO4 micropipe material is prepared by using a microwave radiation technology. The microwave radiation process is simple in operation, energy-saving and environment-friendly, low in energy consumption, and energy-concentrated, and is favorable for improving a reaction rate and a synthesis efficiency of the BiVO4 material. The XRD and SEM analysis results of the product fully prove that the method can obtain the BiVO4 material with regular morphology and small particle size, is favorable for increasing active sites of the BiVO4 material, and thus improves the photocatalytic performance of the BiVO4 material. The target product BiVO4 material has the abilities of catalytic degradation of pollutants, catalytic photoelectrochemical decomposition of water and energy storage, and is expected to play an important role in the field of photocatalysis.