A kind of ordered mesoporous silicon nanomaterial with mcm-41 molecular sieve structure and its preparation method
A MCM-41, nanomaterial technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve problems such as unfavorable product pore size and structure, use of toxic reagents, and cumbersome preparation process, Achieve higher output, simple operation and good repeatability
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Embodiment 1
[0022] (1) Under stirring conditions, add 1 g of cationic surfactant CTAB into a narrow bottle filled with 3.5 ml NaOH (2 M) and 480 ml ultrapure water, and keep stirring for 30 min;
[0023] (2) Add 5 ml TEOS dropwise to the above solution, raise the temperature to 80 °C and continue stirring for 30 min to obtain a white translucent gel;
[0024] (3) The white gel-like substance obtained above was directly washed and dried with deionized water, dried at 90 oC overnight, then put into a muffle furnace, heated to 500 oC at a heating rate of 2 oC / min, and roasted for 5 h to obtain particles MCM-41 mesoporous silica molecular sieve;
[0025] (4) At room temperature, the obtained MCM-4 mesoporous silica molecular sieve and Mg powder were put into a tube furnace at a molar ratio of 1:2.5, and after a period of nitrogen gas, the temperature was raised to 650 °C at a certain heating rate and kept for 3 h , then down to room temperature;
[0026] (5) The obtained reduction product w...
Embodiment 2
[0028] (1) Under stirring conditions, add 2 g cationic surfactant CTAB into a narrow bottle containing 7 ml NaOH (2 M) and 480 ml ultrapure water, and keep stirring for 30 min;
[0029] (2) Add 9 ml TEOS dropwise to the above solution, raise the temperature to 80 °C and continue stirring for 30 min to obtain a white translucent gel;
[0030] (3) The white gel-like substance obtained above was directly washed with deionized water and drained, dried at 90 oC overnight, then put into a muffle furnace, heated to 550 oC at a heating rate of 2 oC / min, and roasted for 5 h to obtain particles MCM-41 mesoporous silica molecular sieve;
[0031] (4) At room temperature, the obtained MCM-4 mesoporous silica molecular sieve and Mg powder were put into a tube furnace at a molar ratio of 1:2.5, and after a period of nitrogen gas, the temperature was raised to 650 °C at a certain heating rate and kept for 3 h , then down to room temperature;
[0032] (5) The obtained reduction product was s...
Embodiment 3
[0034] (1) Under stirring conditions, add 1 g of cationic surfactant CTAB into a narrow bottle filled with 3.5 ml NaOH (2 M) and 480 ml ultrapure water, and keep stirring for 30 min;
[0035] (2) Add 5 ml TEOS dropwise to the above solution, raise the temperature to 80 °C and continue stirring for 30 min to obtain a white translucent gel;
[0036] (3) The white gel-like substance obtained above was directly washed with deionized water and drained, dried at 90 oC overnight, then put into a muffle furnace, heated to 550 oC at a heating rate of 2 oC / min, and roasted for 5 h to obtain particles MCM-41 mesoporous silica molecular sieve;
[0037] (4) At room temperature, the obtained MCM-4 mesoporous silica molecular sieve and Mg powder were put into a tube furnace at a molar ratio of 1:4, and after passing nitrogen for a period of time, the temperature was raised to 650 °C at a certain heating rate and kept for 3 h , then down to room temperature;
[0038] (5) The obtained reduct...
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