Preparation method of photo electrochemical calcitonin eobiont sensor taking flower-shaped WO3 composite material as foundation
A biosensor, tungsten trioxide technology, applied in the direction of material electrochemical variables, etc., can solve the problems of long detection period, cumbersome steps, low sensitivity, etc., and achieve the effect of improving conductivity, enhancing sensitivity and improving performance
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Embodiment 1
[0032] Example 1 Preparation of WO 3 / NCQDs / Sb 2 S 3 The specific steps are:
[0033] (1) Add 9 mmol of Na 2 WO 4 ∙2H 2 O was dissolved in 16.36 mL of ultrapure water under continuous stirring, and then 4.9 mol / L of HCl solution was added dropwise to the above solution to adjust its pH value to about 1.5, and then 18 mmol of NaCl and 0.83 mmol of h 2 C 2 o 4 Add to the above mixed solution, stir continuously for 30 min, then add 41 mL of ultrapure water, finally, transfer the obtained solution to a 100 mL polytetrafluoroethylene-lined autoclave, heat at 150 °C for 1 h, and cool to At room temperature, the resulting mixture was centrifuged three times with ultrapure water and ethanol, and dried in vacuum to obtain WO 3 Yellow powder, dissolved in ultrapure water to obtain WO 3 suspension;
[0034] (2) Cut the ITO electrode to a size of 2.5 cm × 0.8 cm, ultrasonically clean it with acetone, ethanol, and ultrapure water for 30 min, and dry it in an oven at 140 °C for 2...
Embodiment 2
[0036] Example 2 prepares WO 3 / NCQDs / Sb 2 S 3 The specific steps are:
[0037] (1) Add 10 mmol of Na 2 WO 4 ∙2H 2 O was dissolved in 18.2 mL of ultrapure water under continuous stirring, and then 5.45 mol / L of HCl solution was added dropwise to the above solution to adjust its pH value to about 1.5, and then 20 mmol of NaCl and 0.9 mmol of h 2 C 2 o 4 Add to the above mixed solution, stir continuously for 30 min, then add 45.45 mL of ultrapure water, finally, transfer the obtained solution to a 100 mL polytetrafluoroethylene-lined autoclave, heat at 150 °C for 1 h, and cool to At room temperature, the resulting mixture was centrifuged three times with ultrapure water and ethanol, and dried in vacuum to obtain WO 3 Yellow powder, dissolved in ultrapure water to obtain WO 3 suspension;
[0038] (2) The ITO electrode was cut to a size of 2.5 cm × 0.8 cm, ultrasonically cleaned with acetone, ethanol and ultrapure water for 30 min, dried in an oven at 140 °C for 2 h, an...
Embodiment 3
[0040] Example 3 prepares WO 3 / NCQDs / Sb 2 S 3 The specific steps are:
[0041] (1) Add 11 mmol of Na 2 WO 4 ∙2H 2 O was dissolved in 20 mL of ultrapure water under continuous stirring, and then 6 mol / L HCl solution was added dropwise to the above solution to adjust its pH value to about 1.5, and then 22 mmol of NaCl and 1 mmol of h 2 C 2 o 4 Add to the above mixed solution, stir continuously for 30 min, then add 50 mL of ultrapure water, finally, transfer the obtained solution into a 100 mL polytetrafluoroethylene-lined autoclave, heat at 150 °C for 1 h, and cool to At room temperature, the resulting mixture was centrifuged three times with ultrapure water and ethanol, and dried in vacuum to obtain WO 3 Yellow powder, dissolved in ultrapure water to obtain WO 3 suspension;
[0042] (2) Cut the ITO electrode to a size of 2.5 cm × 0.8 cm, ultrasonically clean it with acetone, ethanol and ultrapure water for 30 min, and dry it in an oven at 140 °C for 2 h. Dissolve 10...
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