Preparation method and application of a composite material modified electrode for detecting lactic acid concentration
A technology of composite materials and modified electrodes, which is applied in the direction of material electrochemical variables, material analysis, material analysis through electromagnetic means, etc., can solve the problems of high working electrode potential, poor stability, low reproducibility, etc., and achieve increased quantity and stable Good performance and repeatability, strong anti-interference ability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0044] Preparation of a polyphthalocyanine cobalt-multi-walled carbon nanotube composite modified electrode for the determination of lactic acid concentration comprises the following steps:
[0045](1) Purification treatment of multi-walled carbon nanotubes: Weigh 1g of multi-walled carbon nanotubes, and pour into 150mL dilute nitric acid with a concentration of 15% by mass and mix evenly, then ultrasonically disperse the solution for 40min, pour the solution into Put it into a 250mL Erlenmeyer flask, slowly raise the temperature to 160°C, and reflux at a constant temperature for 8h. After the reaction, dilute with distilled water, centrifuge and wash at 6000r / min, and dry the solid at 80°C to obtain purified multi-walled carbon nanotubes.
[0046] (2) Carboxylation treatment of multi-walled carbon nanotubes: get the multi-walled carbon nanotubes after step (1) purification, add in the mixed acid (3:1, v / v) that 60ml concentrated sulfuric acid and concentrated nitric acid are f...
Embodiment 2
[0076] Preparation of a polyphthalocyanine iron-graphene composite modified electrode for the determination of lactic acid concentration comprises the following steps:
[0077] (1) Graphene purification treatment: Weigh 0.2g graphene, pour it into 30mL dilute nitric acid and mix well, then ultrasonically disperse the solution for 30min, pour the solution into a 100mL three-necked flask, slowly raise the temperature to 120°C, and keep the temperature constant Reflux for 10 h. After the reaction, dilute with distilled water, filter with suction, and dry the solid at 70° C. to obtain purified graphene.
[0078] (2) Graphene carboxylation treatment: weigh 0.15g of graphene purified in step (1), add 40ml of concentrated sulfuric acid and concentrated nitric acid mixed acid (3:1, v / v), ultrasonic at room temperature for 2h, ultrasonic Keep circulating water during the process, control the water temperature at about 35°C, then slowly pour the mixed solution into a beaker containing 2...
Embodiment 3
[0088] Preparation of polyphthalocyanine copper-carbon nanosphere composite modified electrode for the determination of lactic acid concentration comprises the following steps:
[0089] (1) Purification of carbon nanospheres: Weigh 1.5g of carbon nanospheres, pour them into 225mL of dilute nitric acid and mix well, then ultrasonically disperse the solution for 60min, pour the solution into a 500mL three-necked flask, and slowly heat up to 180°C , constant temperature reflux for 6 hours, after the reaction, dilute with distilled water, and use a funnel for suction filtration or centrifugation, and dry the solid at 90°C to obtain purified carbon nanospheres.
[0090] (2) Carboxylation treatment of carbon nanospheres: weigh 1.5 g of carbon nanospheres purified in step (1), add 100 ml of a mixed acid (3:1, v / v) composed of concentrated sulfuric acid and concentrated nitric acid, and ultrasonicate for 4 hours at room temperature , Keep circulating water during the ultrasonic proces...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diffusion coefficient | aaaaa | aaaaa |
| diffusion coefficient | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More