Bispyrazole functionalized lead imprinted fdu-12 material and its preparation method and application
A FDU-12, functionalized technology, applied in the field of mesoporous materials, can solve the problems of low selective adsorption of Pb(II), weak anti-interference ability of coexisting ions, poor regeneration ability of materials, etc., and achieve good chemical stability , improved selectivity, good effect
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Embodiment 1
[0066] Synthesis of bispyrazole-functionalized lead imprinted MCM-41 material (namely Pb-IIMS-MCM-41)
[0067] Dissolve 1 mmol of lead complex (0.811 g) in 80 mL of tetrahydrofuran under stirring, and add 1 mmol of anhydrous K to the solution 2 CO 3 (0.138g). After two hours, 1 mmol (0.247 g) of TEPIC was added dropwise to the solution. The whole mixture was heated at reflux at 65°C for 12 hours and the solvent was dried under vacuum. The obtained solid was dissolved in 20 mL of toluene, then 973 mg of MCM-41 was added, and the mixture was heated under reflux at 110° C. for 48 hours. After filtration and vacuum drying, the obtained solid was repeatedly washed with dichloromethane, distilled water, ethanol and ethyl acetate, and then dried to obtain a white solid substance. Use 10mL for every 5mg of Pb(II) ion imprinting material, 3mol L -1 HCl washes to elute template lead. After drying, a Pb(II) ion-imprinted mesoporous silica material, namely Pb-IIMS-MCM-41, was obtain...
Embodiment 2
[0071] Synthesis of bispyrazole-functionalized lead-imprinted SBA-15 material (namely Pb-IIMS-SBA-15)
[0072] Dissolve 1 mmol of lead complex (0.811 g) in 80 mL of tetrahydrofuran under stirring, and add 1 mmol of anhydrous K to the solution 2 CO 3 (0.138g). After two hours, 1 mmol (0.247 g) of TEPIC was added dropwise to the solution. The whole mixture was heated at reflux at 65°C for 12 hours and the solvent was dried under vacuum. The obtained solid was dissolved in 20 mL of toluene, then 973 mg of SBA-15 was added, and the mixture was heated under reflux at 110° C. for 48 hours. After filtration and vacuum drying, the obtained solid was repeatedly washed with dichloromethane, distilled water, ethanol and ethyl acetate, and then dried to obtain a white solid substance. Use 10mL for every 5mg of Pb(II) ion imprinting material, 3mol L -1 HCl washes to elute template lead. After drying, a Pb(II) ion-imprinted mesoporous silica material, namely Pb-IIMS-SBA-15, was obtain...
Embodiment 3
[0076] Synthesis of bispyrazole-functionalized lead-imprinted FDU-12 material (namely Pb-IIMS-FDU-12)
[0077] Dissolve 1 mmol of lead complex (0.811 g) in 80 mL of tetrahydrofuran under stirring, and add 1 mmol of anhydrous K to the solution 2 CO 3 (0.138g). After two hours, 1 mmol (0.247 g) of TEPIC was added dropwise to the solution. The whole mixture was heated at reflux at 65°C for 12 hours and the solvent was dried under vacuum. The obtained solid was dissolved in 20 mL of toluene, then 973 mg of FDU-12 was added, and the mixture was heated under reflux at 110° C. for 48 hours. After filtration and vacuum drying, the obtained solid was repeatedly washed with dichloromethane, distilled water, ethanol and ethyl acetate, and then dried to obtain a white solid substance. Use 10mL for every 5mg of Pb(II) ion imprinting material, 3mol L -1 HCl washes to elute template lead. After drying, a Pb(II) ion-imprinted mesoporous silica material, namely Pb-IIMS-FDU-12, was obtain...
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