With the increase of the population, the world's printing and dyeing industry has been expanding, Zirconium the industry has a large number of organic dye pollutants, has become an important source of water pollution all over the world. Semiconductor photocatalysis technology can directly use sunlight at room temperature to efficiently oxidize and degrade dye contaminants. Therefore, it is a favorable way for environmental pollution control to use sunlight to degrade dye contaminants by photocatalysis technology. Because ultraviolet light only accounts for about 4% of the sun's total energy, and the visible light accounts for about 46%, Zirconium the key to using solar energy is to use the visible light in the sun. Therefore, light-responsive photocatalyst has an important application foreground in the field of environmental governance. However, because of the limitation of the band structure and the high photosynthetic carrier recombination rate, Zirconium the activity and durability of the dye pollutant degraded by visible light catalyst are generally lower. Another beneficial way to degrade dye contaminants is to use catalysts for catalytic degradation without illumination at room temperature. The development of highly active and high durability catalysts for the degradation of dye contaminants without illumination and room temperature has important practical prospects and academic value in the field of environmental pollution control. Many catalysts exhibit catalytic activity and even high activity under light conditions, but the availability of this activity is often very dependent on the condition of illumination. If the light intensity is weak, or there is no illumination, the catalytic activity can not be demonstrated, Zirconium and even the specific wavelength of light can be used to show the activity, which makes the application of the Catalyst Limited. Therefore, Zirconium the research and development of catalysts with low requirements for external conditions are important to broaden the scope of application and reduce the cost of application.
The application of a ZrGeO4 as a catalyst for the degradation of organic dye contaminants is the following steps:
(1) The organic dye pollutant is used as the substrate to catalyze the degradation by ZrGeO4 as catalyst;
(2) The activity evaluation of ZRGEO4 catalysts: To determine the degradation rate of organic dye contaminants and to measure their catalytic activity in the time required for their complete degradation. The above-mentioned germanium-zirconium application, Zirconium the organic dye pollutant is preferably rhodamine B (RhB) or methylene blue
(MB), the catalytic degradation, the temperature is 10~25℃, the illumination condition is completely avoids light or the natural light illumination.
The beneficial effect of the invention is:
(1) The experimental results show that ZRGEO4 can effectively degrade the organic dyes such as rhodamine B or methylene blue even at room temperature. In the degradation experiment, the ZrGeO4 repeated use three times, Zirconium the activity did not decrease, continued to use repeatedly, Zirconium the activity still did not have the obvious decline, showed very high durability.
(2) The ZrGeO4 catalytic degradation of dyes does not need to rely on light conditions, Zirconium the temperature is almost no demand, high durability, has a good application value.