36results about How to "Excellent purification" patented technology

The invention discloses a novel efficient automatic indoor air purification device and belongs to the technical field of environment-friendly air purification. The indoor air purification device specifically comprises a shell, a circuit board, an air guiding device, an air dust collection device, a negative ion generation device, an ultraviolet sterilization device, a photocatalytic oxidation device, an operation panel and a wireless remote controller, wherein a draught fan serves as a power source of the air guiding device. A negative ion technology, an ultraviolet sterilization technology, a photocatalytic oxidation technology, a silver ion sterilization technology and a filtering adsorption technology are integrated. The shortages that according to an existing air purification device, the functions of sterilization, disinfection and removal of suspended particles, volatile harmful gases, peculiar smells, ozone and other harmful gases are single or the removal effect is poor, energy consumption is large, secondary pollution is caused, cost is high, and the environment-friendly performance is poor are overcome. The novel efficient automatic indoor air purification device is complete in air purification and disinfection effect, simple in structure, high in efficiency, low in energy consumption and noise, capable of saving maintenance cost, long in service life and capable of being practically applied to various indoor environments such as medical treatment institutions, enterprise and public institutions, public occasions, storerooms, workshops and houses.

The invention discloses a preparation method of a titanium dioxide-molybdenum trioxide / platinum-carbon catalyst. The preparation method comprises the following steps of firstly, preparing nano particles of a TiO2-MoO3 core-shell structure; secondly, preparing a mixed system; thirdly, preparing a mixed system carrying platinum metal; and fourthly, performing reduction reaction so as to obtain the TiO2-MoO3 / platinum-carbon catalyst. According to the preparation method, titanium dioxide and molybdenum trioxide are combined to prepare nano particles of the TiO2-MoO3 core-shell structure, then thenano particles are combined with the platinum-carbon catalyst so as to obtain the TiO2-MoO3 / platinum-carbon catalyst. The catalyst is far better than a pure photocatalyst medium in air purification, can be widely used for purifying air in limited spaces like a room, an underground garage, and a tunnel, can improve the environment of the spaces remarkably, is easy in step to prepare, and has high practical value.