Photo-polymerization method for preparing hydrophilic fluorescent nano spheres and application thereof in detection of 2,4,6-trinitrotuluene explosive
A fluorescent nanometer and hydrophilic technology, which is applied in the field of nitro explosive sensing and detection, can solve the problems of low sensitivity, difficult to operate equipment, complex instruments, etc., and achieve the effect of small background interference, low detection limit and high sensitivity
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Embodiment 1
[0024] 1. 0.8mmol of zinc sulfide doped with manganese quantum dots (the molar doping amount of manganese is 5%) and 0.06mmol of 0.06mmol of chloroform are injected into 6mL of chloroform, stirred evenly for 20min, and the product is used Precipitate with 20mL of ethanol, centrifuge to obtain a white precipitate, and then ultrasonically disperse it in 4mL of chloroform to obtain an allyl thiol-modified zinc sulfide-doped manganese quantum dot dispersion;
[0025] 2. Add 18mg sodium dodecylsulfonate into 10mL deionized water to completely dissolve;
[0026] 3. Mix 0.25mL of the dispersion obtained in step 1, 6.25μg of azobisisobutyronitrile, and 0.75mL of chloroform evenly, pour it into the aqueous solution of sodium dodecylsulfonate prepared in step 2, and place it in an ultrasonic cell disruptor Ultrasound for 3 minutes to obtain a white microemulsion;
[0027] 4. Place the white microemulsion obtained in step 3 under a 365nm ultraviolet laser and irradiate it for 10 minutes...
Embodiment 2
[0030] 1. 0.5mmol of zinc sulfide doped with manganese quantum dots (the molar doping amount of manganese is 5%) and 0.06mmol of 0.06mmol of chloroform are injected into 6mL of chloroform, stirred evenly for 20min, and the product is used Precipitate with 20mL of ethanol, centrifuge to obtain a white precipitate, and then ultrasonically disperse it in 4mL of chloroform to obtain an allyl thiol-modified zinc sulfide-doped manganese quantum dot dispersion;
[0031] 2. Add 18mg sodium dodecylsulfonate into 10mL deionized water to completely dissolve;
[0032] 3. Mix 0.40 mL of the dispersion obtained in step 1, 10.0 μg of azobisisobutyronitrile, and 0.60 mL of chloroform evenly, pour it into the aqueous solution of sodium dodecylsulfonate prepared in step 2, and place it in an ultrasonic cell disruptor Ultrasound for 3 minutes to obtain a white microemulsion;
[0033] 4. Place the white microemulsion obtained in step 3 under a 365nm ultraviolet laser and irradiate it for 10 minu...
Embodiment 3
[0036] 1. Inject 0.3mmol of zinc sulfide-doped manganese quantum dots in the oil phase (the molar doping amount of manganese is 5%), and 0.06mmol of allyl mercaptan are injected into 6mL of chloroform, stirred evenly for 20min, and the product is precipitated with 20mL of ethanol, Centrifuge to obtain a white precipitate, and then ultrasonically disperse it in 4 mL of chloroform to obtain an allyl thiol-modified zinc sulfide-doped manganese quantum dot dispersion;
[0037] 2. Add 18mg sodium dodecylsulfonate into 10mL deionized water to completely dissolve;
[0038] 3. Mix 0.66 mL of the dispersion obtained in step 1, 16.5 μg of azobisisobutyronitrile, and 0.34 mL of chloroform evenly, pour it into the aqueous solution of sodium dodecylsulfonate prepared in step 2, and place it in an ultrasonic cell disruptor Ultrasound for 3 minutes to obtain a white microemulsion;
[0039] 4. Place the white microemulsion obtained in step 3 under a 365nm ultraviolet laser and irradiate it f...
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