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Application of a kind of sulfonated carbon cloth electrode

A technology of sulfonated carbon cloth and electrodes, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problems of high cost of working electrodes, achieve increased electrochemical active area, no Secondary pollution, simple effect of electrochemical technology

Active Publication Date: 2021-08-24
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 a kind of sulfonated carbon cloth electrode
  • Application of a kind of sulfonated carbon cloth electrode
  • Application of a kind 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

An application of a sulfonated carbon cloth electrode relates to an application of a carbon cloth electrode. The invention aims to solve the technical problem of high cost of the working electrode in the prior electrocatalytic removal of oxygen-containing metal anions. The sulfonated carbon cloth electrode of the invention is used as a working electrode in three-electrode electrocatalysis, and is applied to the reduction of metal elements in oxygen-containing metal anions and the fixation of the reduced metal ions. The sulfonated carbon cloth electrode prepared by the present invention has a relatively high electrochemical active area, which is beneficial to the transmission of electrons, and can realize the removal of hexavalent chromium of oxygen-containing metal anions in wastewater and the fixation of trivalent chromium ions at the same time, so that The highly toxic hexavalent chromium is reduced to and fixed to trivalent chromium ions. The invention adopts a hydrothermal method to prepare carbon cloth electrodes with sulfonic acid groups on the surface, the sulfonated electrodes reduce hexavalent chromium, and the negatively charged sulfonic acid groups realize the fixation of positively charged trivalent chromium ions.

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 Patents(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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