Precise ion implantation type modified geopolymer and preparation method thereof
The present application provides a precise ion implantation type modified geopolymer and an efficient preparation method thereof, wherein the precise ion implantation type modified geopolymer comprise: a geopolymer source material with a specific size, which implanted by Si and Al ions with a designated dose by an ion implanter. The geopolymer source material consists of a mixture of solid waste, alkali activator, and water.
1 . A precise ion implantation type modified geopolymer, wherein the geopolymer comprises:
a geopolymer source material with a preset size, and Si ion and Al ion with a designated dose implanted to the geopolymer source material with a preset size by an ion implanter.
2 . The geopolymer of claim 1 , wherein the geopolymer source material with a preset size comprises: a mixture of solid waste, alkali activator, and water;
wherein the solid waste comprises one or any combination of high-calcium solid waste raw materials, and low-calcium solid waste raw materials.
3 . The geopolymer of claim 2 , wherein the high-calcium solid waste raw materials comprise: steel slag powder, slag powder, boiler slag; the low-calcium solid waste raw materials comprise: calcined coal gangue powder, activated sediment powder, and fly ash.
4 . The geopolymer of claim 1 , wherein the designated dose is 1×10 16 ˜2×10 17 ions/cm 2 .
5 . The geopolymer of claim 2 , wherein the alkali activator comprises: sodium hydroxide and sodium silicate.
6 . A method for preparing a precise ion implantation type modified geopolymer of claim 1 , wherein the method comprises the following steps:
Step 1: adding an alkali activator into the solid waste according to a certain mixing ratio, then adding water, fully stirring and mixing to obtain a geopolymer source material; pretreating the source material to obtain a matrix with a preset size;
Step 2: placing the matrix in a vacuum sample table of an ion implanter, and under a preset accelerating voltage, Si and Al ions are implanted into the matrix at a specified dose.
7 . The method of claim 6 , wherein the certain mixing ratio comprises: a mass ratio of the alkali activator to the water is 0.08˜0.12:1; a mass ratio of water to solid waste is 0.25˜0.65:1; the alkali activator has modulus of 1.2˜1.8, represent a molar ratio of silicon dioxide to sodium oxide in the alkali activator.
8 . The method of claim 6 , wherein the pretreating the source material to obtain a matrix with a preset size comprises:
processing the prepared source material into a thin sheet with a cross-sectional area of no more than 2500 mm 2 and a thickness of 3˜8 mm with flat upper and lower surfaces, and performing grinding, polishing, cleaning, and drying treatments in sequence; wherein an automatic grinding machine is used in the grinding treatment and silicon carbide abrasive paper of 400 meshes, 800 meshes, 1200 mesh, 2000 meshes and 5000 meshes is sequentially selected to grind a surface of the sample, and the grinding time of each grade of abrasive paper is 3˜5 minutes; in the polishing process, a test surface is polished by 1˜5 μm ultrafine alumina suspension and a polishing disk, and the polishing time is controlled in 5˜10 minutes; in the cleaning treatment, absolute ethanol is used for washing the sample for 3˜5 times; in the drying treatment, the sample is dried in the condition of 50 degrees for 24 hours.
9 . The method of claim 6 , wherein the preset accelerating voltage is 40˜80 keV.