Preparation method and application of a self-cleaning electrochemical sensor under visible light
An electrochemical and sensor technology, applied in the field of electrochemical sensor preparation, can solve problems such as unfavorable formation of a network structure, unfavorable electrochemical testing, carboxyl salt asymmetry, etc., and achieves good detection effect and efficient use of electrodes. Impact, low cost effect
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Embodiment 1
[0052] A method for preparing a hydroquinone and catechol electrochemical sensor with self-cleaning ability under ultraviolet light or visible light, comprising the following steps in sequence:
[0053] (1) Mix 0.012g citric acid monohydrate, 0.55g trimesic acid and 0.8g (1.8476mmol) La(NO 3 ) 3 ·6H 2 Add O to 9mL N, N-dimethylformamide (DMF) to dissolve, slowly add 0.5mL (1.467mmol) tetra-n-butyl titanate (TBOT) under magnetic stirring, and heat at a heating rate of 10°C / min. Reaction at 150°C for 48 hours to obtain the La-Ti metal frame material, followed by solvent exchange of the La-Ti metal frame material with chloroform and methanol, and drying at 100°C to obtain the LTOF precursor material;
[0054](2) Weigh 2g of LTOF precursor material in a crucible, raise the temperature to 800°C at a heating rate of 10°C / min under the protection of nitrogen flow, and keep it warm for 300min, take it out, grind it, and name this new composite material LTOF- 800;
[0055] (3) Take...
Embodiment 2
[0061] A method for preparing a hydroquinone and catechol electrochemical sensor with self-cleaning ability under ultraviolet light or visible light, comprising the following steps in sequence:
[0062] (1) Mix 0.012g citric acid monohydrate, 0.55g trimesic acid and 0.802g (1.8477mmol) Ce(NO 3 ) 3 ·6H 2 Add O to 9mL N, N-dimethylformamide (DMF) to dissolve, slowly add 0.638mL (1.8703mmol) tetra-n-butyl titanate (TBOT) under magnetic stirring, and heat with hydrothermal heating at a rate of 10°C / min React at 150°C for 48 hours to obtain the Ce-Ti metal frame material, perform solvent exchange on the Ce-Ti metal frame material with chloroform and methanol in sequence, and dry at 100°C to obtain the CTOF precursor material;
[0063] (2) Weigh 2g of CTOF precursor material in a crucible, raise the temperature to 800°C at a heating rate of 10°C / min under the protection of nitrogen flow, and keep it warm for 300min, take it out and grind it, and name this new composite material CT...
Embodiment 3
[0070] A method for preparing a hydroquinone and catechol electrochemical sensor with self-cleaning ability under ultraviolet light or visible light, comprising the following steps in sequence:
[0071] (1) Mix 0.012g citric acid monohydrate, 0.55g trimesic acid, 0.810g (1.848mmol) Nd(NO 3 ) 3 ·6H 2 O, take 9mL of N, N-dimethylformamide (DMF) to dissolve, slowly add 0.644mL (1.888mmol) tetra-n-butyl titanate (TBOT) under magnetic stirring, and heat to React at 150°C for 48 hours to prepare the Nd-Ti metal frame material, perform solvent exchange on the Nd-Ti metal frame material with chloroform and methanol in sequence, and dry at 100°C to obtain the NTOF precursor material;
[0072] (2) Weigh 2g of NTOF precursor material in a crucible, raise the temperature to 800°C at a heating rate of 10°C / min under the protection of nitrogen flow, and keep it warm for 300min, take it out and grind it, and name this new composite material NTOF-800 ;
[0073] (3) Dissolve 10 mg of NTOF-...
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