Preparation method of electrochemiluminescence biosensor for detecting organochlorine pesticides

[0042] Example 1 FeMn-TiO 2 / MoS 2 preparation of

[0043] (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;

[0044] (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;

[0045] (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;

[0046] (4) The reaction product obtained in step (3) was centrifuged and washed three

[0052] Example 2 FeMn-TiO 2 / MoS 2 preparation of

[0053] (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;

[0054] (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;

[0055] (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;

[0056] (4) The reaction product obtained in step (3) was centrifuged and washed three times wi

[0062] Example 3 FeMn-TiO 2 / MoS 2 preparation of

[0063] (1) Add 0.6 g of molybdenum disulfide powder, 2.0 mmol of iron salt and 2.0 mmol of manganese salt into 10 mL of n-butyllithium solution, and stir for 48 hours under nitrogen protection at 50 °C to obtain the reacted solution;

[0064] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 50 °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;

[0065] (3) Add 10 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 0.8 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 200°C for 24 hours;

[0066] (4) The reaction product obtained in step (3) was centrifuged and washed three times wi