Functionalized mesoporous material modified electrode and method for measuring aminophenol isomer

A technology for isomers and mesoporous materials, applied in the field of simultaneous determination of three isomers of aminophenol, can solve the problem of low detection selectivity and sensitivity, complex synthesis of electrode materials, and expensive carbon nanotubes, etc. The problem is to achieve the effect of simple and convenient material synthesis, low material price, and simple electrode fabrication.

Inactive Publication Date: 2011-01-19
UNIV OF JINAN
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Problems solved by technology

However, the synthesis of electrode materials required by this method is complicated, carbon nanotubes are expensive, the electrodes are not easy to update and the reproducibility is poor, and the detection selectivity and sensitivity are not high.

Method used

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  • Functionalized mesoporous material modified electrode and method for measuring aminophenol isomer
  • Functionalized mesoporous material modified electrode and method for measuring aminophenol isomer
  • Functionalized mesoporous material modified electrode and method for measuring aminophenol isomer

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Embodiment 1

[0026] Synthetic steps of SBA-15: SBA15 was synthesized with P123 (Aldrich, EO 20 PO 70 EO 20, Ma=5800) is a structure-directing agent. Dissolve 3.286 g of P123 in 30 g of deionized water, add 98 g of 2 mol / L HCl solution, stir the solution at 40 °C until it becomes transparent, add 6.944 g of TEOS dropwise, stir and crystallize at 40 °C for 24 h, then transfer to aging Aged in bottles at 80°C for 48 h. Suction filtration, the product was washed with redistilled water and ethanol twice until neutral, and then dried in a vacuum oven. The dried product was calcined in a box-type high-temperature resistance furnace at a rate of 1 °C / min to 550 °C for 6 h to obtain the product SBA-15 for use. The molar ratio of each raw material used in the experiment is about n(TEOS):n(P123):n(HCl):n(H 2 O) = 1:0.017:5.8:181.

[0027] ② Surface amination modification of mesoporous material SBA15

[0028] Synthesis steps of aminated SBA-15: Take 1 g of SBA-15 in a three-necked flask, add 3...

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Abstract

The invention relates to the technical field of chemical isomer analysis and measurement, in particular to a functionalized mesoporous material modified electrode and a method for measuring three aminophenol isomers at the same time thereby. The method comprises the preparation of the functionalized mesoporous material modified electrode and the operation for measuring three aminophenol isomers at the same time by using the electrode. The functionalized mesoporous material modified electrode material is simple and convenient to synthesize and low in price, and the electrode is simple and convenient to prepare and easy to update and has the advantages of good repeatability, no toxicity and no pollution to the environment; and meanwhile, the measuring method effectively reduces the interference of concomitant substances 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 aminophenol. Background technique [0002] Aminophenol (AP) is an important chemical intermediate widely used in dyestuffs, printing, medicine, biology and other fields. Because of its toxic side effects on the human body and pollution of the environment, the monitoring of its content has certain practical significance. o-Aminophenol ( o -AP), m-aminophenol ( m -AP) and p-aminophenol ( p -AP) is a common coexisting isomer in the environment. The chemical and physical properties of the three are similar, and it is difficult to distinguish the three by general determination methods. At present, gas chromatography, high performance liquid chromatography, kinetic photometry, and quartz microbalance method are mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 周长利张鑫段烁徐晓萌徐帅方海莉
Owner UNIV OF JINAN
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