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Molybdenum Disulfide High-Energy Material Has The Ability To Desalinate Seawater Efficiently

wallpapers Industry 2020-06-16 PDF Format

According to research, molybdenum disulfide high-energy materials can remove salt from seawater more efficiently. Computer simulation of seawater desalination efficiency of various films and comparisons found that molybdenum disulfide film has the highest energy, which is higher than graphene film—70 %.

This material is only one nanometer thick and is covered with nanopores, which can leak a lot of seawater, leaving salt and other components to achieve the purpose of desalination. Finding highly efficient desalination materials has always been an important issue, and this research has laid the foundation for the development of next-generation materials.

At present, the most advanced seawater desalination technology relies on a reverse osmosis process, which squeezes and filters seawater through a thin plastic membrane to obtain fresh water. The pores of this membrane should be of moderate size, that is, it must be able to block salt and other dirty things, and allow water molecules to pass through. Reverse osmosis is good at filtering spice, but freshwater production has been limited. Although it is as thin as an eye mask, it is still too thick relative to the molecular level of the filter, so it needs a lot of pressure to push the water past, which requires a lot of energy and is very costly. One way to increase water permeability on a large scale is to make the membrane thinner. Researchers have found nano-thick graphene films, but graphene will react with water, which poses significant challenges to industrialization.

They decided to explore their role in seawater desalination after studying molybdenum disulfide nanopores as a DNA sequencing platform. They used the blue water supercomputer of the school's National Supercomputing Application Center for simulation. As a result, the single-layer molybdenum disulfide film has excellent comprehensive properties such as thickness, pore geometry, and chemical properties, and is superior to other materials.

In general, the unique atomic composition structure significantly improves the water permeability of the molybdenum disulfide membrane. The thickness of its single-layer layer can dramatically reduce the energy of pushing water, thereby significantly reducing operating costs. Researchers are currently testing other properties of this material in seawater purification, such as the problem of clogging pores that often occur with plastic films. MoS2 powder is new material. After the performance and manufacturing process is optimized, the application range will be extensive


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