Zinc oxide nanofiber QCM ultraviolet photosensitive sensor and preparation method thereof
A zinc oxide nanometer and sensor technology, which is applied to instruments, weighing equipment using elastically deformable parts, measuring devices, etc., can solve the problems of complex preparation process, short response time and high cost, and achieve simple preparation method and response time. Short, reliable effect
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Embodiment 1
[0028] A preparation method of zinc oxide nanofiber QCM ultraviolet photosensitive sensor, comprising the following steps:
[0029] (1) Preparation of zinc oxide nanofiber sensitive layer: first, dissolve 1.2 grams of polyvinylpyrrolidone with a relative molecular weight of 1.3 million in 8.5 grams of absolute ethanol, place it in a conical flask A, and heat and stir it in a water bath at 60°C After 4 hours, solution A was obtained, and 1.2 grams of zinc acetate was added into the Erlenmeyer flask B containing 2 grams of absolute ethanol and 0.45 grams of deionized water, and stirred for 2 hours under a magnetic stirrer to obtain inorganic salt solution B, which was prepared by mixing polymer solution A and inorganic salt solution B, and fully stirred for 2 hours with a magnetic stirrer to obtain a precursor spinning solution of zinc oxide; The collecting electrode is silicon wafer or aluminum foil, and the precursor spinning solution of zinc oxide is added to the syringe. The...
Embodiment 2
[0033] A preparation method of zinc oxide nanofiber QCM ultraviolet photosensitive sensor, comprising the following steps:
[0034] (1) Preparation of zinc oxide nanofiber sensitive layer: first dissolve 1 gram of polyethylene oxide PEO (relative molecular mass: 5,000,000) in deionized water, place in Erlenmeyer flask A, and stir with a magnetic stirrer for 4 hours at room temperature , to obtain solution A, add 1.2 grams of zinc acetate into the conical flask B equipped with 2 grams of absolute ethanol and 0.45 grams of deionized water, stir for 2 hours under a magnetic stirrer, obtain inorganic salt solution B, mix the prepared high Molecular solution A and inorganic salt solution B are fully stirred with a magnetic stirrer for 2 hours to obtain a precursor spinning solution of zinc oxide; the positive pole of the high-voltage power supply of the electrospinning device is connected to the needle tip of the syringe, and the negative pole receives the collector. Add the precur...
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