A kind of green photoelectrochemical pH sensor prepared in situ and preparation method thereof
A photoelectrochemical, in-situ preparation technology, applied in the fields of material electrochemical variables, scientific instruments, instruments, etc., can solve the problems of high price, complex method, time-consuming and low sensitivity, and achieve low cost of raw materials, simple operation, improved The effect of material properties
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Embodiment 1
[0023] (1) Cut the FTO conductive glass into 1.0×2.0 cm 2 For the small pieces, they were ultrasonicated in ultrapure water, acetone, absolute ethanol, and ultrapure water for 10 min respectively, then washed with ultrapure water, dried and soaked in absolute ethanol for later use.
[0024] (2) First, fix the clean FTO conductive glass with high temperature resistant tape to a size of 1.0×1.0 cm 2 The electrode area is placed in the magnetron cavity, and then vacuumed by the mechanical pump and the molecular pump to make the vacuum degree in the cavity reach 5.0×10 -4 Pa, and then adjust the radio frequency system to make the ZnO ceramic target glow, first pre-sputter for a period of time to clean the surface of the target, and at the same time make the system stable. When the temperature in the chamber is stable, 3 sccm high-purity oxygen and 40 sccm high-purity argon are introduced at the same time, the working pressure is 1 Pa, the radio frequency power is 50 W, and the s...
Embodiment 2
[0029] (1) Cut the FTO conductive glass into 1.0×2.0 cm 2 For the small pieces, they were ultrasonicated in ultrapure water, acetone, absolute ethanol, and ultrapure water for 10 min respectively, then washed with ultrapure water, dried and soaked in absolute ethanol for later use.
[0030] (2) First, fix the clean FTO conductive glass with high temperature resistant tape to a size of 1.0×1.0 cm 2 The electrode area is placed in the magnetron chamber, and then vacuumed by the mechanical pump and the molecular pump to make the vacuum degree in the chamber reach 6.0×10 -4 Pa, and then adjust the radio frequency system to make the ZnO ceramic target glow, and pre-sputter for a period of time to clean the target surface and stabilize the system at the same time. When the temperature in the chamber is stable, 10 sccm high-purity oxygen and 100 sccm high-purity argon are introduced at the same time, the working pressure is 3 Pa, the radio frequency power is 200 W, and the sputteri...
Embodiment 3
[0035] (1) Cut the FTO conductive glass into 1.0×2.0 cm 2 For the small pieces, they were ultrasonicated in ultrapure water, acetone, absolute ethanol, and ultrapure water for 10 min respectively, then washed with ultrapure water, dried and soaked in absolute ethanol for later use.
[0036](2) First, fix the clean FTO conductive glass with high temperature resistant tape to a size of 1.0×1.0 cm 2 The electrode area is placed in the magnetron chamber, and then vacuumed by the mechanical pump and the molecular pump to make the vacuum degree in the chamber reach 4.0×10 -4 Pa, then adjust the radio frequency system to make the ZnO ceramic target glow, first pre-sputter for a period of time to clean the target surface, and at the same time make the system stable. When the temperature inside the chamber was stabilized, 7 sccm high-purity oxygen and 70 sccm high-purity argon were introduced at the same time, the working pressure was 2 Pa, the radio frequency power was 125 W, and th...
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