High Level Material Silicon Briquette

The surface of the silicon briquette is activated to produce an active hydroxyl group. Trimethoxyaminopropylsilane containing functional groups forms a complex with pentachlorophenol. The complex and the activated silicon ball were hydrolyzed and condensed together, and the complex was grafted on the surface of the silicon ball, and the template pentachlorophenol was removed by hydrochloric acid extraction, leaving a special hole on the modified silicon ball. The synthesis principle and synthesis process of this method are simple, and there are no harsh conditions. The synthesized material has very high selectivity for pentachlorophenol, and the blot site is fully exposed and the mass transfer speed is fast, which is suitable for the establishment of a new technology of online solid-phase selective pre-enrichment of mobile injection and modern analytical instruments.

1.A method for preparing nanomagnetic silicon briquette, which can be used in the fields of chemical engineering, environmental protection and biomedicine. Firstly, divalent iron salts were selected as catalysts to catalyze the conversion of divalent nickel salts and trivalent iron salts into nickel ferrite magnetic nanoparticles by the method of low-temperature catalytic phase conversion, and then the nickel ferrite magnetic nanoparticles were dispersed in the reverse micellar solution under the action of surfactant, and the silicon dioxide was coated on the nickel ferrite nanoparticles through gelation to form nanomagnetic silicon balls, and the nano-magnetic silicon balls were prepared with a particle size of 50nm. Among them, the mass ratio of nickel ferrite nanoparticles to silica coating is less than 10, which provides a huge surface area for the loading of active components in different application fields.

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