Nano sensitive material for acrylic acid
A sensitive material, acrylic acid technology, applied in the field of sensing, can solve problems such as inability to complete on-site and cumbersome procedures, and achieve high sensitivity and selectivity, slow precipitation process, and small particle size.
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Embodiment 1
[0015] Co-dissolve ferric nitrate nonahydrate, calcium acetate hydrate and manganese chloride tetrahydrate in deionized water, ultrasonically oscillate until clear and transparent, heat the mixed solution to 38°C, and slowly add ammonia water with a mass fraction of 18% under constant stirring, The dropping rate is 1 drop per second, until no precipitate is formed, cool to room temperature, continue to stir for 1 hour, let it stand for 6 hours, filter the precipitate, dry it at 100°C, grind it thoroughly, and place it in a box-type resistance furnace at a rate of Raise the temperature to 505°C at a rate of no more than 3°C per minute, keep the temperature for calcination for 4 hours, and cool naturally to obtain the nano-sensitive material of acrylic acid.
[0016] Analysis: The powder material is tested by transmission electron microscope, and its particle size does not exceed 40nm; its composition analysis shows that the mass percentage of each composition is 28.77% Fe 2 o ...
Embodiment 2
[0019] Co-dissolve ferric chloride hexahydrate, ferric perchlorate nonahydrate, calcium nitrate tetrahydrate and manganese sulfate in deionized water, oscillate ultrasonically until it is clear and transparent, heat the mixed solution to 38°C, and slowly add mass under constant stirring Ammonia water with a fraction of 20% is added at a rate of 2 drops per second until no precipitate is formed. Cool to room temperature, continue to stir for 1 hour, and let it stand for 9 hours. Filter the precipitate, dry it at 100°C, and grind it thoroughly. In a type resistance furnace, the temperature is raised to 525°C at a rate of no more than 3°C per minute, kept at this temperature for calcination for 5 hours, and naturally cooled to obtain acrylic acid nano-sensitive materials.
[0020] Analysis: The powder material is tested with a transmission electron microscope, and its particle size does not exceed 40nm; it is analyzed for its composition, and the mass percentage of each compositio...
Embodiment 3
[0023] Co-dissolve ferrous sulfate, ferric nitrate nonahydrate, calcium chloride dihydrate and manganese acetate dihydrate in deionized water, oscillate ultrasonically until it is clear and transparent, heat the mixture to 38°C, and slowly add the mass fraction dropwise under constant stirring 22% ammonia water, the dropping rate is 2 drops per second, until no precipitate is formed, cool to room temperature, continue to stir for 1 hour, let it stand for 8 hours, filter the precipitate, dry at 100°C, grind it fully, put it in the box Raise the temperature to 510°C at a rate of no more than 3°C per minute in a resistance furnace, keep the temperature for calcination for 6 hours, and cool naturally to obtain the nano-sensitive material of acrylic acid.
[0024] Analysis: The powder material is tested with a transmission electron microscope, and its particle size does not exceed 40nm; it is analyzed for its composition, and the mass percentage of each composition is measured to be...
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Abstract
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