Photochemistry has a wide range of applications, involving materials, catalysis, energy and other fields. Here are some specific application examples:
Application of photochemical reactions in the field of energy: Photochemical reactions can convert light energy into chemical energy, which can then produce electricity or store it as chemical fuel. For example, photocells convert light energy into electrical energy using the photogenerated charge separation and transport process of solid semiconductor materials. This technology is widely used in the manufacture of solar cells to provide clean, renewable energy for humans.
Applications of photochemistry in the field of environmental science: Photochemical reactions can be used to degrade and remove organic contaminants from water. By polluting the water body by irradiating a specific wavelength of light, the photochemical reaction can cause the photooxidative degradation of organic matter, and ultimately reduce the organic matter content of the water body. In addition, photochemical reactions can also be used for photocatalytic air purification, using photocatalysts to convert harmful gases in the air into harmless substances and improve air quality.
Application of photochemistry in bioengineering and pharmaceutical industry: the principle of photochemical oxidation reaction can synthesize vitamin C, calcium pantothenate, niacin and coenzyme A. In addition, it can also be used to make antibiotics and hormone drugs. Due to the advantages of high efficacy, high selectivity and stability, these drugs are one of the main means for the development of new drugs.
Application of photochemistry in food industry: photochemical reactions can be used to produce monosodium glutamate and organic acid beveragesIt can also be used as a fining agent (e.g. citric acid) and preservatives (e.g. lactic acid bacteria) in the production of fruit wine or beer.
In general, photochemistry is an important scientific field, which not only involves the transformation and utilization of matter and energy, but also has a wide range of application prospects in many fields such as environmental management and health care. For more information, it is recommended to read photochemistry** or popular science articles.
The use of the photochemical reactor mainly includes the following steps:
Preparation: Before operation, the power supply of the instrument needs to be connected, and the reactor (or magnetic stirrer) is placed in the main cabinet of the instrument, and the magnet is placed in the quartz reaction tube (or reaction vessel). Check that the mercury lamp (xenon), reactor and cooling water circulation device are properly connected.
Adjust the controller: According to the experimental requirements, adjust the power of the light source and the type of the light source through the controller, so that the light source used is consistent with the controller.
Start the experiment: Turn on the fan switch, reactor and light switch on the instrument, and set the experimental program. Then, the position of the filter and photomultiplier tube is selected according to the experimental requirements, the corresponding wavelength and conversion efficiency are obtained, and the parameters such as the light source are determined, and the corresponding experimental program is entered.
Recording data: Start the experimental program, carry out the reaction, and record and monitor the reaction data in real time through the recorder.
End the experiment: When the reaction is completed, close the deuterium lamp door on the instrument, adjust the air pressure of the reaction kettle to normal pressure, and clean the reaction kettle and other related experimental equipment.
Precautions: Pay attention to safety during operation, do not touch the deuterium lamp and high-voltage electrodes, and wear radiation protection gloves and goggles if necessary. In addition, regular maintenance of the instrument is also required to ensure the normal operation and use of the instrument.
The above is the general use of photochemical reactors, and the specific operation may vary depending on the instrument model and manufacturer. It is recommended to read the instruction manual of the instrument carefully before use and operate according to the requirements in the manual. If you encounter any problems or uncertain situations, you should consult the manufacturer or professionals in time.