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Application of sulfonated carbon cloth electrode

A sulfonated carbon cloth and electrode technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as high cost of working electrodes, increase electrochemical active area, simple electrochemical technology, The effect of improved removal efficiency

Active Publication Date: 2019-12-13
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problem of the high cost of the working electrode in the existing electrocatalytic removal of oxygen-containing metal anions, and provides an application of a sulfonated carbon cloth electrode

Method used

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  • Application of sulfonated carbon cloth electrode
  • Application of sulfonated carbon cloth electrode
  • Application of sulfonated carbon cloth electrode

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specific Embodiment approach 1

[0026] Specific Embodiment 1: This embodiment is an application of a sulfonated carbon cloth electrode. As a working electrode in three-electrode electrocatalysis, the sulfonated carbon cloth electrode is applied to the reduction of metal elements in oxygen-containing metal anions and the reduced metal ion fixation.

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the sulfonated carbon cloth electrode is used as the working electrode in the three-electrode electrocatalysis, and is applied to the reduction of hexavalent chromium in oxygen-containing metal anions and the reduced trivalent Fixation of chromium ions. Others are the same as the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the preparation method of the described sulfonated carbon cloth electrode is carried out according to the following steps:

[0029] 1. Preparation of acidic carbon cloth: Soak the carbon cloth in concentrated nitric acid for 24h~25h, then rinse the carbon cloth with deionized water until the pH of the water is 6~7, and dry it at 80℃~85℃ for 2h~2.5h. Get acidic carbon cloth;

[0030] 2. Preparation of sulfonated carbon cloth: put the acidic carbon cloth into the reaction kettle, add concentrated sulfuric acid to completely submerge the acidic carbon cloth, react at 200°C-220°C for 18h-20h, and then rinse the carbon cloth with deionized water until the water is dry. The pH is 6-7, and it is dried at 80°C-85°C for 2h-2.5h to obtain a sulfonated carbon cloth electrode. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses application of a sulfonated carbon cloth electrode, and relates to application of carbon cloth electrodes, and aims to solve the technical problem of high cost of a working electrode when oxygen-containing metal anions are removed through electro-catalysis in the prior art. The sulfonated carbon cloth electrode serves as a working electrode in three-electrode electro-catalysis and is applied to reduction of metal elements in the oxygen-containing metal anions and fixation of reduced metal ions. The sulfonated carbon cloth electrode prepared by the invention has a relatively high electrochemical active area, is beneficial to electron transmission, can remove the hexavalent chromium of the oxygen-containing metal anions in wastewater and realize immobilization of trivalent chromium ions at the same time, so that high-toxicity hexavalent chromium is reduced into the trivalent chromium ions and the trivalent chromium ions are immobilized. According to the method, the carbon cloth electrode with the surface connected with a sulfonic group is prepared through a hydrothermal method, the hexavalent chromium is reduced through the sulfonation electrode, and fixing ofthe positively-charged trivalent chromium ions is achieved through the negatively-charged sulfonic group.

Description

technical field [0001] The invention relates to the application of a carbon cloth electrode. Background technique [0002] There are many kinds of pollutants in the world, but heavy metal pollutants have always been the most important among them, seriously endangering the health of humans and other animals and plants. If they are discharged into rivers without treatment, they will pose a serious threat to the environment. . Chromium, as one of the more harmful heavy metal pollutants, has become the key treatment object of various countries. There are strict regulations on the discharge of chromium in wastewater and the content of chromium in drinking water. Among them, China stipulates in the "Comprehensive Wastewater Discharge Standard" (GB8978-1996) that the total amount of chromium discharged from wastewater must not exceed 1.5mg / L, and hexavalent chromium should be lower than 0.5mg / L. GB5749-2006) stipulates that the maximum content of hexavalent chromium in drinking w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/22
CPCC02F1/46109C02F2001/46133C02F2101/22
Inventor 杨利明刘光珍罗旭彪黄湄婷周龙禧李玉琦袁正钟坚璞连浩钟兴辛子君陈马龙
Owner NANCHANG HANGKONG UNIVERSITY
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