A kind of preparation method of electrochemical malathion sensor
A malathion and sensor technology, applied in scientific instruments, instruments, and material analysis through electromagnetic means, can solve problems such as low yield and cumbersome process, and achieve low cost, simple preparation, and high selectivity detection Effect
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Embodiment 1
[0039] Example 1 FeMn-TiO 2 / MoS 2 preparation of
[0040] (1) Add 0.6 g of molybdenum disulfide powder, 0.2 mmol of iron salt and 0.2 mmol of manganese salt into 3 mL of n-butyllithium solution, and stir for 12 hours under nitrogen protection at 60 °C to obtain the reacted solution;
[0041] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 60 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain iron , Molybdenum disulfide nanomaterials co-intercalated with manganese;
[0042] (3) Add 500 mg of molybdenum disulfide nanomaterials co-intercalated with iron and manganese prepared in step (2) into 5 mL of tetrabutyl titanate, and after stirring for 1 hour, slowly add 0.5 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 160°C for 18 hours;
[0043] (4) The reaction product obtained in step (3) was centrifuged and washed thre...
Embodiment 2
[0049] Example 2 FeMn-TiO 2 / MoS 2 preparation of
[0050] (1) Add 0.6 g of molybdenum disulfide powder, 1.0 mmol of iron salt and 1.0 mmol of manganese salt into 5 mL of n-butyllithium solution, and stir for 24 hours under nitrogen protection at 30 °C to obtain the reacted solution;
[0051] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 30 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain iron , Molybdenum disulfide nanomaterials co-intercalated with manganese;
[0052] (3) Add 200 mg of molybdenum disulfide nanomaterials co-intercalated with iron and manganese prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, then slowly add 0.6 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 180°C for 20 hours;
[0053] (4) The reaction product obtained in step (3) was centrifuged and washed three times w...
Embodiment 3
[0059] Example 3 Preparation method of electrochemical malathion sensor
[0060] (1) Using the glassy carbon electrode as the working electrode, drop-coat 8 µL of FeMn-TiO on the surface of the electrode 2 / MoS 2 Sol, dry at room temperature;
[0061] (2) Wash the electrode obtained in step (1) with the buffer solution PBS, continue to drip-coat 8 µL of 10 µg / mL malathion antibody solution on the surface of the electrode, and store it in a refrigerator at 4 °C to dry;
[0062] (3) Wash the electrode obtained in step (2) with PBS, continue to drip-coat 8 µL of bovine serum albumin solution with a concentration of 100 µg / mL on the surface of the electrode, and store it in a refrigerator at 4 °C to dry;
[0063] (4) Wash the electrode obtained in step (3) with PBS, store and dry in a refrigerator at 4°C, and then prepare an electrochemical malathion sensor;
[0064] The FeMn-TiO 2 / MoS 2 The sol is 50 mg of FeMn-TiO 2 / MoS 2 The powder was dissolved in 10 mL ultrapure wate...
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