Preparation method of fluorine-modified titanium black active membrane electrode for electrocatalytic oxidation wastewater treatment and cross-flow type water treatment mode

A technology of electrocatalytic oxidation and titanium suboxide, applied in water/sewage treatment equipment, water/sewage treatment, chemical instruments and methods, etc., can solve the problem of insufficient yield of reactive free hydroxyl groups, and achieve convenient large-scale production and application , Improve current efficiency, improve the effect of oxygen evolution potential

Active Publication Date: 2021-06-22
HARBIN INST OF TECH
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Problems solved by technology

However, TiSO anode still suffers from insufficient reactivity, i.e. insufficient yield of free hydroxyl groups, during the electrochemical oxidation process.

Method used

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  • Preparation method of fluorine-modified titanium black active membrane electrode for electrocatalytic oxidation wastewater treatment and cross-flow type water treatment mode
  • Preparation method of fluorine-modified titanium black active membrane electrode for electrocatalytic oxidation wastewater treatment and cross-flow type water treatment mode
  • Preparation method of fluorine-modified titanium black active membrane electrode for electrocatalytic oxidation wastewater treatment and cross-flow type water treatment mode

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Embodiment

[0049] Preparation of titanium oxide active membrane electrode (TiSOs-REM): using carbon powder as a pore generator, TiO 2 At a hydrogen flow rate of 250ml min -1 , the temperature is 1050 ℃ under the condition of 4h reduction reaction, can prepare titanium oxide powder (TiSOs). The obtained TiSOs powder material is mixed with a binder to prepare the slurry, the paste is put into a mold for extrusion molding, and then vacuum-dried and high-temperature roasted to prepare a tubular membrane electrode TiSOs-REM with a length of 6.4 cm and an inner diameter of 2.4 cm. cm, the outer diameter is 2.9cm, and the membrane electrode thickness is 0.5cm.

[0050] Preparation of fluorine-modified titanium oxide active membrane electrode (F-TiSOs-REM): In the reaction cell, use TiSOs-REM as the anode and stainless steel mesh as the cathode, containing 5ml L -1 0.1M NaClO in polytetrafluoroethylene (60 wt% PTFE) 4 as an electrolyte. Such as figure 1 As shown, the NaF concentration corre...

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Abstract

The invention discloses a preparation method of a fluorine-modified titanium black active membrane electrode for electrocatalytic oxidation wastewater treatment and a cross-flow type water treatment mode, relates to the technical field of water treatment, and aims to solve the problem of low degradation efficiency caused by low pollution selectivity and pollutant diffusion limitation of active species generated on the surface of an electrode. The oxygen evolution potential of the titanium black active membrane electrode is improved, the yield of hydroxyl radicals and the selectivity to pollutants are increased by utilizing the enhanced hydrophobic property after the surface of the membrane electrode is modified by fluorine, and the mass transfer of the pollutants to the surface of the electrode is enhanced in a cross-flow operation mode, the electrocatalytic oxidation reaction rate is accelerated, and the reaction energy consumption is reduced. According to the method, the reaction is driven and controlled mainly by controlling the reaction potential and the water inlet flow, the operation is simple and reliable, the treatment process is efficient, secondary pollution is avoided, and the method is suitable for large-scale water treatment application.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method of a fluorine-modified titanium oxide active membrane electrode for electrocatalytic oxidation wastewater treatment and a through-flow water treatment mode. Background technique [0002] Tetrabromobisphenol A (TBBPA), as a representative brominated flame retardant, is widely used in electronic products such as plastic products, rubber and printed circuit boards. The wide use, persistence, and bioaccumulation of TBBPA make it commonly exist in various environmental media as an emerging micro-pollutant. At the same time, as an endocrine disruptor and immunotoxic substance, it is included in the list of 2A carcinogens by WHO, so it is urgent to develop efficient and convenient TBBPA degradation technology. At present, the degradation methods of TBBPA mainly include biological methods, pyrolysis, adsorption and membrane filtration and other p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/36
CPCC02F1/46109C02F2001/46133C02F2001/46152C02F2101/36C02F2201/46115
Inventor 尤世界裴姝钊张金娜
Owner HARBIN INST OF TECH
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