Preparation method and application of two-dimensional nano rare earth borate laccase sensor
A two-dimensional nano, borate technology, applied in instruments, scientific instruments, measuring devices, etc., can solve problems such as desorption activity, loss, laccase leakage, etc., and achieve simple methods, easy large-scale production, and high sensitivity. Effect
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Embodiment 1
[0029] first, Rare earth borate SmBO 3 Preparation of nanosheets:
[0030] In this experiment, a 20 mL sealed hydrothermal reaction kettle lined with polytetrafluoroethylene was used to prepare samarium borate micro-nano materials by solid-state hydrothermal method under medium temperature conditions. The detailed reaction process is described as follows: Add 209.2 mg Sm sequentially to a clean and dry PTFE liner 2 o 3 (0.6 mmol), 44.5 mg H 3 BO 3 (0.72 mmol, 10% excess) and 14 ml H 2O; then put the liner into an ultrasonic cleaner to disperse for 15 min; take out and wipe off the moisture outside the liner, put it into a reaction kettle and seal it; put the closed reaction kettle into a temperature-controlled constant temperature drying oven for 200 ℃ and kept for 36 hours; after the reaction was completed, it was naturally cooled to room temperature, and then separated and washed with a centrifugal separator. After washing 4 times with deionized water and 4 times w...
Embodiment 2
[0038] first, Rare earth borate GdBO 3 Preparation of nanosheets:
[0039] In this experiment, a 20 mL sealed hydrothermal reaction kettle lined with polytetrafluoroethylene was used to prepare samarium borate micro-nano materials by solid-state hydrothermal method under medium temperature conditions. The detailed reaction process is described as follows: 217.5 mg Gd was sequentially added to a clean and dry PTFE liner 2 o 3 (0.6 mmol), 44.5 mg H 3 BO 3 (0.72 mmol, 10% excess) and 14 ml H 2 O; then put the liner into an ultrasonic cleaner to disperse for 15 min; take out and wipe off the moisture outside the liner, put it into a reaction kettle and seal it; put the closed reaction kettle into a temperature-controlled constant temperature drying oven for 200 ℃ and kept for 36 hours; after the reaction was completed, it was naturally cooled to room temperature, and then separated and washed with a centrifugal separator. After washing 4 times with deionized water and 4 ...
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