A hollow nanorobot, its preparation method and its application as an antioxidant
A hollow nano and anti-oxidant technology, which is applied in the direction of chemical instruments and methods, anti-toxic agents, organic compounds/hydrides/coordination complex catalysts, etc., to achieve the effect of large movement area, good ROS scavenging ability, and improved scavenging efficiency
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Embodiment 1
[0049] 1)SiO2 2 synthesis of balls
[0050] Add 0.3 g of cetyltrimethylammonium bromide and 2 mL of 25 wt % concentrated ammonia water to a mixed solution containing 60 mL of absolute ethanol and 100 mL of deionized water. Then, the mixture was heated to 35°C, and ethyl orthosilicate (2 mL) was added rapidly with vigorous stirring. After stirring at 35°C for 48 hours, the white product was collected by centrifugation at 5000 rpm for 10 minutes and washed three times with ethanol.
[0051] 2) Mesoporous SiO with hollow structure 2 synthesis of balls
[0052] SiO will be made 2 The spheres were dispersed in 200 mL of deionized water by sonication and aged in a water bath at 90°C for 48 hours. After the precipitate was separated by centrifugation, it was washed three times with deionized water. Disperse the precipitate in 160 mL of absolute ethanol again by sonication, add 480 μL of 37% hydrochloric acid solution, and stir at 60 °C for 3 hours to remove cetyltrimethylammoni...
Embodiment 2
[0070] 1)SiO2 2 synthesis of balls
[0071] Add 0.3 g of cetyltrimethylammonium bromide and 2 mL of 25 wt % concentrated ammonia water to a mixed solution containing 30 mL of absolute ethanol and 100 mL of deionized water. Then, the mixture was heated to 30°C, and ethyl orthosilicate (2 mL) was added rapidly with vigorous stirring. After stirring at 35°C for 48 hours, the white product was collected by centrifugation at 5000 rpm for 10 minutes and washed three times with ethanol.
[0072] 2) Mesoporous SiO with hollow structure 2 synthesis of balls
[0073] SiO will be made 2 The spheres were dispersed in 200 mL of deionized water by sonication and aged in a water bath at 90°C for 48 hours. After the precipitate was separated by centrifugation, it was washed three times with deionized water. The precipitate was again dispersed in 160 mL of absolute ethanol by sonication, 500 μL of 37% hydrochloric acid solution was added, and stirred at 60 °C for 4 hours to remove cetylt...
Embodiment 3
[0079] 1) SiO2 2 synthesis of balls
[0080] Add 0.4 g of cetyltrimethylammonium bromide and 3 mL of 25 wt % concentrated ammonia water to a mixed solution containing 50 mL of absolute ethanol and 120 mL of deionized water. Then, the mixture was heated to 30°C, and ethyl orthosilicate (3 mL) was added rapidly with vigorous stirring. After stirring at 45°C for 48 hours, the white product was collected by centrifugation at 5000 rpm for 10 minutes and washed three times with ethanol.
[0081] 2) Mesoporous SiO with hollow structure 2 synthesis of balls
[0082] SiO will be made 2The spheres were dispersed in 200 mL of deionized water by sonication and aged in a water bath at 70°C for 48 hours. After the precipitate was separated by centrifugation, it was washed three times with deionized water. Disperse the precipitate in 160 mL of absolute ethanol again by sonication, add 500 μL of 37% hydrochloric acid solution, and stir at 60 °C for 4 hours to remove cetyltrimethylammoni...
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