Novel MOF composite material and preparation method and application thereof
A composite material, MOF technology, applied in nanotechnology for materials and surface science, hybrid/electric double-layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problems of low yield, high cost, non-uniform structure, etc., Achieve the effect of high yield, low cost and simple preparation process
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Embodiment 1
[0034] The MOF / MXene composite material that present embodiment makes, selects Ti 3 AlC 2 and 1,4-naphthalene dicarboxylic acid as MAX materials and organic ligand molecules, including the layered MXene material Ti 3 C 2 , and MOF crystals interspersed in the layered structure and the surface of the material with Al as the node and 1,4-naphthalene dicarboxylic acid as the bridge.
[0035] The specific steps are:
[0036] Step 1, MAX material pretreatment: using a ball mill, Ti 3 AlC 2 Ball milling in ethanol, vacuum drying, ball milling and sieving to obtain submicron Ti 3 AlC 2 powder.
[0037] Step 2, generate MOF / MXene nanocomposites by "one-step method": add water, a small amount of HF, excess naphthalene dicarboxylic acid and treated Ti to the reactor 3 AlC 2 powder, hydrothermal at 180°C for 6 hours, under hydrothermal conditions HF etched away Ti 3 AlC 2 metal atom Al in the structure, giving Ti 3 C 2 , and the obtained Al ions react with naphthalene dicarb...
Embodiment 2
[0043] The MOF / MXene composite material that present embodiment makes, selects Ti 2 AlC and 1,3,5-trimesic acid as MAX materials and organic ligand molecules, including MXene material Ti with layered structure 2 C, and MOF crystals interspersed between layered structures with 1,3,5-trimesic acid as nodes and Al as bridges, Figure 5 It is the scanning electron micrograph of the MOF composite material in this example. .
[0044] The specific steps are: Step 1, MAX material pretreatment: using a ball mill, Ti 2 AlC is ball milled in ethanol, vacuum dried and sieved to obtain submicron Ti 2 AlC powder.
[0045] Step 2, generate MOF / MXene nanocomposites by "one-step method": add water, HF, excess 1,3,5-trimesic acid and treated Ti to the reactor 2 AlC powder, hydrothermal at 120°C for 8 hours, HF etched away Ti under hydrothermal conditions 2 Metal atom Al in AlC structure, to get Ti 2 C nanosheet structure, and the obtained Al ions react with 1,3,5-trimesic acid to obtain ...
Embodiment 3
[0048] The MOF / MXene composite material that present embodiment makes, selects Ti 3 AlC 2 and 1,4-naphthalene dicarboxylic acid as MAX materials and organic ligand molecules, including the layered MXene material Ti 3 C 2 , and MOF crystals interspersed in the layered structure and the surface of the material with Al as the node and 1,4-naphthalene dicarboxylic acid as the bridge.
[0049] The specific steps are:
[0050] Step 1, MAX material pretreatment: using a ball mill, Ti 3 AlC 2 Ball milling in ethanol, vacuum drying, ball milling and sieving to obtain submicron Ti 3 AlC 2 powder.
[0051] Step 2, generate MOF / MXene nanocomposites by "one-step method": add water, a small amount of HF, excess naphthalene dicarboxylic acid and treated Ti to the reactor 3 AlC 2 powder, hydrothermal at 200°C for 1 hour, under hydrothermal conditions HF etched away Ti 3 AlC 2 metal atom Al in the structure, giving Ti 3 C 2 , and the obtained Al ions react with naphthalene dicarbo...
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