An adsorption material, comprising: a plurality of porous silicate particles having a glass-phase structure and comprising silicon oxide, aluminum oxide, barium oxide, strontium oxide and boron oxide, wherein an average pore size of the plurality of porous silicate particles is in a range of from 3 nm to 50 nm, and a zeta potential of the plurality of porous silicate particles is negative at a pH value of from 1 to 5, wherein the adsorption material is obtainable by a method comprising: mixing a silicate powder and at least one metal compound, wherein the silicate powder comprises silicon oxide, aluminum oxide, barium oxide, strontium oxide and boron oxide, and the at least one metal compound is selected from the group consisting of potassium carbonate, sodium carbonate, calcium carbonate and magnesium carbonate; reacting the silicate powder with the metal compound to form silicate molten at a temperature of from 800°C to 1500°C, wherein the silicate molten is cooled to room temperature to form a plurality of porous silicate particles having a glass-phase structure and wherein the average pore size of the plurality of porous silicate particles is in the range of from 3 nm to 50 nm, the zeta potential of the plurality of porous silicate particles is negative at a pH value of from 1 to 5, and the weight ratio of the silicate powder relative to the metal compound is in the range of from 1:1 to 1:20, wherein the average pore size of the plurality of porous silicate particles is measured by the BJH method, and the zeta potential of the plurality of porous silicate particles is measured by the electrophoretic light scattering method using a zeta potential analyzer. a plurality of porous silicate particles having a glass-phase structure and comprising silicon oxide, aluminum oxide, barium oxide, strontium oxide and boron oxide, wherein an average pore size of the plurality of porous silicate particles is in a range of from 3 nm to 50 nm, and a zeta potential of the plurality of porous silicate particles is negative at a pH value of from 1 to 5, wherein the adsorption material is obtainable by a method comprising: mixing a silicate powder and at least one metal compound, wherein the silicate powder comprises silicon oxide, aluminum oxide, barium oxide, strontium oxide and boron oxide, and the at least one metal compound is selected from the group consisting of potassium carbonate, sodium carbonate, calcium carbonate and magnesium carbonate; reacting the silicate powder with the metal compound to form silicate molten at a temperature of from 800°C to 1500°C, wherein the silicate molten is cooled to room temperature to form a plurality of porous silicate particles having a glass-phase structure and wherein the average pore size of the plurality of porous silicate particles is in the range of from 3 nm to 50 nm, the zeta potential of the plurality of porous silicate particles is negative at a pH value of from 1 to 5, and the weight ratio of the silicate powder relative to the metal compound is in the range of from 1:1 to 1:20, wherein the average pore size of the plurality of porous silicate particles is measured by the BJH method, and the zeta potential of the plurality of porous silicate particles is measured by the electrophoretic light scattering method using a zeta potential analyzer. mixing a silicate powder and at least one metal compound, wherein the silicate powder comprises silicon oxide, aluminum oxide, barium oxide, strontium oxide and boron oxide, and the at least one metal compound is selected from the group consisting of potassium carbonate, sodium carbonate, calcium carbonate and magnesium carbonate; reacting the silicate powder with the metal compound to form silicate molten at a temperature of from 800°C to 1500°C, wherein the silicate molten is cooled to room temperature to form a plurality of porous silicate particles having a glass-phase structure and wherein the average pore size of the plurality of porous silicate particles is in the range of from 3 nm to 50 nm, the zeta potential of the plurality of porous silicate particles is negative at a pH value of from 1 to 5, and the weight ratio of the silicate powder relative to the metal compound is in the range of from 1:1 to 1:20, wherein the average pore size of the plurality of porous silicate particles is measured by the BJH method, and the zeta potential of the plurality of porous silicate particles is measured by the electrophoretic light scattering method using a zeta potential analyzer.