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Beta-CD-SBA15 modified electrode and method for measuring nitrophenol isomerides

A technology of isomers and modified electrodes, which is applied in the field of simultaneous determination of three isomers of nitrophenol, can solve the problem of low detection selectivity and sensitivity, expensive carbon nanotubes, and difficult renewal of modified electrodes, etc. problems, to achieve the effect of improving detection selectivity and sensitivity, low material price, and easy production

Inactive Publication Date: 2013-08-28
UNIV OF JINAN
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  • Description
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  • Application Information

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Problems solved by technology

For the electrochemical detection of p-nitrophenol isomers, the synthesis of electrode materials used in multi-walled carbon nanotube modified electrodes is complicated, carbon nanotubes are expensive, and the prepared modified electrodes are not easy to update and have poor reproducibility, and there is detection selectivity and low sensitivity

Method used

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  • Beta-CD-SBA15 modified electrode and method for measuring nitrophenol isomerides
  • Beta-CD-SBA15 modified electrode and method for measuring nitrophenol isomerides
  • Beta-CD-SBA15 modified electrode and method for measuring nitrophenol isomerides

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Embodiment 1

[0029] 1. Synthesis of Mesoporous Material β-CD-SBA15

[0030] ①Synthesis of SBA-15: Dissolve 4g Pluronic P123 in 30g deionized water, add 120g 2mol / L HCl, stir at 40°C to get a transparent solution, add 8.5g TEOS, keep stirring at 40°C for 20h. Then continue aging at 100°C for 2-3 days, filter, wash, and dry. Finally, the temperature was raised to 500°C at a rate of 1°C / min, and the SBA-15 sample was obtained after calcination for 4-6 hours.

[0031] Synthesis of β-cyclodextrin functionalized SBA-15, 6.0 g β-cyclodextrin was dissolved in 200 mL dry DMF, 1.0 g NaH was added and stirred vigorously for 30 min, and unreacted NaH was filtered off. Add 2.0 ml KH-560 to the filtrate, react at 90 °C for 6 h under a nitrogen atmosphere, add 8.0 g SBA-15, then raise the temperature to 120 °C to continue the reaction for 24 h, cool, filter, and the product is successively washed with DMF, di Washed with redistilled water, ethanol and acetone, and dried to obtain β-cyclodextrin function...

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Abstract

The invention relates to the technical field of chemical isomeride analysis and measurement, in particular to a functionalized mesoporous material beta-CD-SBA15 modified electrode and a method for simultaneously measuring three nitrophenol isomerides. The invention comprises a preparation step of the beta-CD-SBA15 modified electrode, an operation method for simultaneously measuring three nitrophenol isomerides by using the electrode, and the like. The mesoporous material beta-CD-SBA15 modified electrode has the advantages of simple and convenient material synthesis, simpler and more convenient electrode manufacture, low material price, easy electrode update, good repeatability, no toxicity and no environmental pollution; and the measurement method effectively reduces the interference of coexistence materials and has the advantages of good selectivity and high sensitivity.

Description

technical field [0001] The invention relates to the technical field of chemical isomer analysis and determination, in particular to a method for using a mesoporous material to functionally modify an electrode and using it to simultaneously determine three isomers of nitrophenol. Background technique [0002] Nitrophenol compounds are widely present in the wastewater discharged from the production of textiles, pharmaceuticals, papermaking, dyes and other industries, and have serious toxic effects on humans, animals, and plants. Therefore, the research on the detection methods of phenolic substances in water is becoming more and more By the attention of analytical chemists. For example, high performance liquid chromatography (HPLC), ultraviolet spectrophotometry, gas chromatography and fluorescence quenching have been reported. However, these methods generally require pre-treatment of samples, which are cumbersome and time-consuming to operate, require a lot of supporting equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 周长利刘震徐帅徐晓萌段烁
Owner UNIV OF JINAN
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