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Preparation method and application of NH2-MIL-125 modified carbon paste electrode

A kind of NH2-MIL-125, 1. NH2-MIL-125 technology, applied in the preparation and application field of NH2-MIL-125 modified carbon paste electrode

Active Publication Date: 2014-05-07
德尚智能科技(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the determination of Mn2+ content by photoelectrochemical sensors made of NH2-MIL-125 (Ti) has not been reported yet

Method used

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  • Preparation method and application of NH2-MIL-125 modified carbon paste electrode
  • Preparation method and application of NH2-MIL-125 modified carbon paste electrode

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Embodiment Construction

[0019] 1. Preparation of NH 2 - MIL-125 (Ti) modified carbon paste electrode:

[0020] Weigh 0.5g graphite powder and 0.025gNH 2 - The solid powder of MIL-125 is fully ground in a mortar. After obtaining a uniformly mixed powder, add 0.18mL of liquid paraffin to the mixture and continue grinding until a uniform carbon paste is obtained.

[0021] Then fill the carbon paste into the cavity of the adjustable carbon paste electrode to get NH 2 - MIL-125 modified carbon paste electrodes.

[0022] Since the NH used for the electrode 2 -The working surface of the MIL-125 modified carbon paste electrode is only the bare lower end surface, so after each use, just pass the rotating shaft in the chamber of the adjustable carbon paste electrode, and the previously used enriched in NH 2 - The enrichment on the lower end surface of the MIL-125 modified carbon paste electrode is removed, and a new working surface is exposed again for subsequent use.

[0023] 2. NH 2 -Application of MI...

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Abstract

The invention discloses a preparation method and application of an NH2-MIL-125 modified carbon paste electrode, relating to the technical field of electrochemical detection. The method comprises the following steps: grinding graphite powder, NH2-MIL-125 (Ti) solid powder and liquid paraffin into uniform carbon paste, and filling the carbon paste in an adjustable carbon paste electrode cavity body to obtain the NH2-MIL-125 modified carbon paste electrode. Under the irradiation of visible light, the cathodic stripping voltammetry detection of an oxidative product after photocatalytic oxidation of NH2-MIL-125 (Ti) on Mn<2+> is performed, and relatively good sensitivity and selectivity can be realized as a standard curve method is adopted. The NH2-MIL-125 modified carbon paste electrode is applied to detection of the Mn<2+> content, the detection result of the method is nearly the same as that of atomic absorption spectrometry, and a novel method for detecting the manganese ion content is formed.

Description

technical field [0001] The present invention relates to NH 2 - The application of MIL-125 (Ti), which also involves the field of electrochemical detection technology, specifically belongs to NH 2 - Application of MIL-125 modified carbon paste electrodes. Background technique [0002] Metal-Organic Frameworks (MOFs) materials are a new type of porous materials developed in recent years. Due to its porosity, pore adjustability, easy functionalization, special optical and electrical characteristics, etc., it has shown good applications in the fields of gas adsorption and separation, gas storage, organic catalysis, photoelectromagnetic materials, and chemical sensors. Application prospect. [0003] NH 2 -MIL-125 (Ti) is a coordination polymer with a stable structure connected by Ti-O structural units and 2-aminoterephthalate. The presence of Ti-O structural units in the material makes it photocatalytic Properties (Dan-Hardi M., Serre C., Frot T., Rozes L., Maurin G., Sanche...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/48
Inventor 胡效亚王艳娟金根娣徐琴李可鑫金党琴
Owner 德尚智能科技(江苏)有限公司
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