Two-dimensional metal organic framework semiconductor material, preparation method thereof and application thereof
A metal-organic framework and semiconductor technology, applied in the direction of hybrid capacitor electrodes, etc., to achieve high conductivity, highly reversible redox, and simple synthesis steps
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Embodiment 1
[0029] A method for preparing a two-dimensional metal organic framework semiconductor material, comprising the steps of:
[0030] Under the protection of argon, 8.6 mg of 2,3,6,7,10,11,14,15-octahydroxytetrabenzonaphthalene I and 5.5 mg of copper acetate monohydrate were dissolved in 500 μl of degassed N , N-dimethylformamide and 2 ml of degassed purified water, sonicated for 10 min, reacted at 85°C for 72 h, lowered to room temperature, centrifuged, washed the solid three times with water and three times with acetone. Vacuum drying at room temperature for one day to obtain a black powder, that is, a two-dimensional metal organic framework semiconductor material II-1;
[0031] The reaction formula is as follows:
[0032]
[0033] figure 1 Scanning electron microscope and high-resolution transmission electron microscope photos of the two-dimensional metal organic framework semiconductor material prepared in Example 1. It proves that the two-dimensional metal organic frame...
Embodiment 2
[0039] A method for preparing a self-supporting two-dimensional metal-organic framework semiconductor material film, the steps are as follows:
[0040] Put 10 mg of two-dimensional metal organic framework semiconductor material powder and 2 mg of conductive carbon black prepared in Example 1 into an agate mortar and grind evenly, add 2 mg of 60% polytetrafluoroethylene (adhesive) and 2 drops of Absolute ethanol, keep grinding to make the mixture even, add a small amount of absolute ethanol continuously during the grinding process to prevent the mixture from drying out. When the mixture becomes batter-like, use a small steel spoon to stir continuously until the solvent is completely evaporated and a malleable dough-like mixture is obtained. The sample was repeatedly rolled by a pair of rollers to make a film with a thickness of 40 μm. Vacuum drying at 70°C for 12 hours to obtain a dry self-supporting two-dimensional metal organic framework semiconductor material film. The abo...
Embodiment 3
[0042] The preparation of a symmetrical solid-state supercapacitor battery device and the testing of an electrochemical capacitor include the following steps:
[0043]Two square membranes obtained in Example 2 were used, NKK-MPF30AC-100 was used as a separator in the middle, and 30 microliters of 1M sodium chloride aqueous solution was used as an electrolyte, and they were packaged in a battery. After standing overnight, the cyclic voltammetry curve, constant current charge-discharge curve and cycle stability performance of the device were tested in sequence. First, the working potential window is determined to be 0-1.0V, during which the battery responds purely capacitively. Subsequently, test 5mV s respectively -1 -100mV s -1 Cyclic voltammetry curves at different scan rates (such as Figure 5 shown). The curve presents an approximately rectangular trajectory with two obvious redox peaks, indicating that the capacitance of the two-dimensional MOF semiconductor material i...
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