A preparation method of a fluorine-modified titanium oxide active membrane electrode for electrocatalytic oxidation wastewater treatment and a through-flow 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 , reduce energy consumption, improve the effect of current efficiency

Active Publication Date: 2022-06-28
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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  • A preparation method of a fluorine-modified titanium oxide active membrane electrode for electrocatalytic oxidation wastewater treatment and a through-flow water treatment mode
  • A preparation method of a fluorine-modified titanium oxide active membrane electrode for electrocatalytic oxidation wastewater treatment and a through-flow water treatment mode
  • A preparation method of a fluorine-modified titanium oxide active membrane electrode for electrocatalytic oxidation wastewater treatment and a through-flow water treatment mode

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Embodiment

[0049] Preparation of titania active membrane electrode (TiSOs-REM): using carbon powder as a pore generator, TiO 2 At hydrogen flow rate of 250ml min -1 , and the temperature is 1050 °C for 4 h of reduction reaction, and titanium oxide powder (TiSOs) can be prepared. The obtained TiSOs powder material is added with a binder for slurry mixing, and the paste is put into a mold and extruded for vacuum drying and high-temperature roasting 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 2.9 cm, and the membrane electrode thickness is 0.5 cm.

[0050] Preparation of fluorine-modified titania active membrane electrode (F-TiSOs-REM): In the reaction cell, TiSOs-REM was used as anode and stainless steel mesh was used as cathode, containing 5 ml L -1 0.1M NaClO in Teflon (60wt% PTFE) 4 as an electrolyte. like figure 1 As shown, the NaF concentration corresponding to the Ti / F molar ratio of 40:1 to...

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Abstract

The invention relates to a preparation method of a fluorine-modified titanium oxide active membrane electrode and a through-flow water treatment mode for electrocatalytic oxidation wastewater treatment, and relates to the technical field of water treatment. The invention aims to solve the problems of low degradation efficiency caused by low selectivity of active species generated on the electrode surface to pollution and limited diffusion of pollutants. The invention uses the enhanced hydrophobicity of the surface of the membrane electrode modified by fluorine to improve the oxygen evolution potential of the titanium oxide active membrane electrode, increase the output of hydroxyl radicals and the selectivity to pollutants, and strengthen The mass transfer of pollutants to the electrode surface accelerates the electrocatalytic oxidation reaction rate and reduces the energy consumption of the reaction. The method mainly drives and controls the reaction by controlling the reaction potential and the influent flow rate, the operation is simple and reliable, the treatment process is efficient and there is no secondary pollution, and it is suitable for large-scale water treatment applications.

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 widespread use, persistence, and bioaccumulation of TBBPA make TBBPA commonly present in various environmental media as an emerging micropollutant. At the same time, as an endocrine disruptor and an immunotoxic substance, it is included in the list of 2A carcinogens by WHO, so it is urgent to develop an efficient and convenient TBBPA degradation technology. At present, the degradation methods of TBBPA mainly include biological methods, pyrolysis, adsorption and membrane filtra...

Claims

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Application Information

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Patent Type & Authority Patents(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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