Metal oxide-metal-organic frameworks (MOX@MOFs) nanometer core-shell structure one-dimensional array as well as preparation method and application thereof
A nano-core-shell and array technology is applied in the field of gas sensors, which can solve problems such as poor selectivity, achieve high-sensitivity detection, and be easy to promote.
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[0025] Example 1
[0026] Weigh zinc chloride and cobalt chloride (Zn:Co=1:1, total molar concentration 0.86mM), add 2.5mL water and 13.5mL DMF, dissolve in the reactor, add 2-methylimidazole (30.4mM) and stir to form In a transparent solution, put the ZnO one-dimensional array film hydrothermally grown on the sapphire wafer with the seed layer method face down, put it into the solution, seal the reactor and react at 60°C for 2 hours. After the reaction is completed, the surface of the composite array film is rinsed clean. Dry in the middle.
Example Embodiment
[0027] Example 2
[0028] Weigh zinc nitrate and cobalt nitrate (Zn:Co=0:1, total molar concentration 0.86mM), add 0mL water and 16mL DMF to dissolve in the reactor, add 2-methylimidazole (76.0mM) and stir to form a transparent solution. Solvothermally grown TiO on sapphire wafers by seed layer method 2 The one-dimensional array film face down, put it into the solution, seal the reactor and react at 25°C for 12 hours. After the reaction is completed, the surface of the composite array film is rinsed and dried in the air.
Example Embodiment
[0029] Example 3
[0030] Weigh zinc chloride and cobalt chloride (Zn:Co=3:1, total molar concentration 0.86mM), add 4mL water and 12mL DMF to dissolve in the reactor, add imidazole (30.4mM) and stir to form a transparent solution. SnO hydrothermally grown on polycrystalline alumina ceramics by layer method 2 The one-dimensional array film face down, put it into the solution, seal the reaction kettle and react at 120°C for 0.5 hours. After the reaction is completed, the surface of the composite array film is washed clean and dried in the air.
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