Preparation method and application of a dodecahedral zinc oxide nanomaterial
A zinc oxide nano, dodecahedral technology, applied in zinc oxide/zinc hydroxide, material resistance, nanotechnology, etc., to achieve the effect of structural stability, improving gas sensing sensitivity, and enriching surface active sites
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Embodiment 1
[0035] (1) Dissolve 1.116 g of zinc nitrate hexahydrate in 60 mL of anhydrous methanol and stir for 5 min to obtain solution A;
[0036] (2) Dissolve 1.232 g of 2-methylimidazole in 60 mL of anhydrous methanol and stir for 5 min to obtain solution B;
[0037] (3) Add the B solution obtained in step (2) to the A solution obtained in step (1) at a rate of two seconds per drop using a separating funnel, and then continuously stir at 600 r / min at 25 °C for 24 h to carry out complexation reaction , after the reaction, the centrifuged white precipitate was washed three times with anhydrous methanol;
[0038] (4) Dry the white precipitate after washing in step (3) in a vacuum oven at 60 °C for 24 h. After drying, grind it with a mortar for 30 min. Under protection, the temperature was raised to 400 °C at 2 °C / min and calcined for 2 h, and then air was introduced to continue calcining for 2 h. The final powder obtained was the zinc oxide nanomaterial used to prepare the gas sensor. ...
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