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Artificial antibody type titanium dioxide (TiO2)/ boron-doped diamond (BDD) membrane electrode and preparation method thereof

A technology of boron-doped diamond and titanium dioxide, which is applied in the field of artificial antibody-type titanium dioxide/boron-doped diamond film electrode and its preparation, can solve the problems of difficult recycling and low quantum yield, and achieve long-lasting recognition ability, high adsorption capacity, excellent The effect of photocatalytic performance

Inactive Publication Date: 2014-09-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many challenges and difficulties in applying selective photocatalysis to the actual wastewater treatment, such as subsequent separation and recovery of powder catalysts, difficulty in recycling, and low quantum yield due to the rapid recombination of photogenerated electrons and holes.

Method used

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  • Artificial antibody type titanium dioxide (TiO2)/ boron-doped diamond (BDD) membrane electrode and preparation method thereof
  • Artificial antibody type titanium dioxide (TiO2)/ boron-doped diamond (BDD) membrane electrode and preparation method thereof
  • Artificial antibody type titanium dioxide (TiO2)/ boron-doped diamond (BDD) membrane electrode and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Immerse BDD in aqua regia and boil for 10min to completely remove the organic and inorganic stains on the surface, then place it in 2M1M H 2 SO 4 In the electrolyte, a bias voltage of +3 V was applied for 10 min to obtain a hydrophilic BDD surface with -OH terminals, and finally ultrasonically cleaned with ethanol and purified water, respectively. Prepare 25mL containing 0.03M TiOSO 4 and 3M H 2 SO 4 Then add 6mL concentrated hydrochloric acid and 10mg target pollutant (bisphenol A), stir vigorously at room temperature for 6h to completely dissolve, and finally adjust the pH of the mixed solution to 1.3 with ammonia water to obtain a precursor solution. Put the pre-treated BDD (10×45mm) electrode into a 100mL round bottom flask, pour the prepared precursor solution, soak the BDD electrode in the solution, and reflux at 65°C for 24h under the cooling of circulating water. Removal of (MI,n-P)-TiO imprinted with target contaminants 2 The / BDD electrode was rinsed thre...

Embodiment 2

[0043] Immerse BDD in aqua regia and boil for 30min to completely remove the organic and inorganic stains on the surface, then place it in 3M H 2 SO 4 In the electrolyte, a bias voltage of +3.5V was applied for 20 min to obtain a hydrophilic BDD surface with -OH terminals, and finally ultrasonically cleaned with ethanol and purified water, respectively. Prepare 45mL containing 0.05M TiOSO 4 and 5M H 2 SO 4 Then add 8mL of concentrated hydrochloric acid and 20mg of the target pollutant (bisphenol A), and stir vigorously at room temperature for 10h to completely dissolve it. Finally, adjust the pH of the mixed solution to 1.5 with ammonia water to prepare a precursor solution. Put the pre-treated BDD (10×45mm) electrode into a 100mL round bottom flask, pour the prepared precursor solution, soak the BDD electrode in the solution, and reflux at 90°C for 48h under the cooling of circulating water. Removal of (MI,n-P)-TiO imprinted with target contaminants 2 The / BDD electrode ...

Embodiment 3

[0045] Adopt the (MI, n-P)-TiO that prepares in the embodiment 1 2 / BDD electrode with non-imprinted TiO 2 / BDD Electrode Photocatalytic Oxidative Degradation of Simulated Wastewater.

[0046] The photoelectrocatalytic degradation is carried out in a semi-cylindrical single-cell reactor, and a cup with circulating water is added to keep the temperature of the reaction system at room temperature. During the degradation, magnetrons are used to continuously stir to enhance mass transfer. With the electrode prepared in Example 1 as the anode, the Ti plate as the counter electrode, the electrode area is 4cm 2 , keep the electrode distance 1cm. A high-pressure mercury lamp with a power of 300W (main wavelength 365nm) was selected as the ultraviolet light source, and the radiation intensity was 15mW cm -2 . Use 20mgL -1 (0.088mM) BPA and 50mg L -1 (0.347mM) 2-NP (2-naphthol), 0.1M Na 2 SO 4 The mixed solution of the supporting electrolyte is used as the degradation simulated ...

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Abstract

The invention relates to an artificial antibody type titanium dioxide (TiO2) / boron-doped diamond (BDD) membrane electrode and a preparation method thereof, the electrode is in p-n heterostructure, the electrode uses boron-doped diamond (BDD) as a substrate, uniform dense fusiform TiO2 particles are on the surface of the BDD, the particle size of the TiO2 particles is 50-100nm, a modification layer with a thickness of 5 to 10 mum is formed by the densely covered TiO2 particles; the preparation method of the artificial antibody type titanium dioxide (TiO2) / boron-doped diamond (BDD) membrane electrode is as follows: using of the boron-doped diamond as the substrate, low temperature liquid phase deposition of TiO2 with a target pollutant molecular imprinting on the surface of the substrate, and removal of target pollutant molecules. Compared with the prior art, the artificial antibody type titanium dioxide (TiO2) / boron-doped diamond (BDD) membrane electrode prepared by the method both has the p-n heterostructure and target pollutant molecular recognition ability, has excellent photoelectrocatalytic integrative performance and high selectivity degradation ability, has the advantages of simple preparation process, can be effectively used for removal of organic pollutants with low concentration, low tendency to biochemistry and high toxicity, and has extensive economic and social benefits.

Description

technical field [0001] The invention belongs to the technical fields of material chemistry, environmental electrochemistry and pollutant control, and relates to an electrode and a preparation method thereof, in particular to an artificial antibody type titanium dioxide / boron-doped diamond film electrode and a preparation method thereof. Background technique [0002] In recent years, humans have discharged thousands of organic compounds into the water environment in their daily production and life, and most of the chemical substances will cause serious harm to the environment on which people live. According to their toxicity, carcinogenicity, bioaccumulation, biodegradability, etc., many chemical substances have been listed as priority pollutants by the US Environmental Protection Agency (USEPA), of which 90% are highly toxic organic pollutants (HTOPs). [0003] In order to remove these highly toxic organic pollutants in water, various standards have been issued, including c...

Claims

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Application Information

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IPC IPC(8): C25B11/04C25B11/10C02F1/46
Inventor 赵国华金烨飞柴守宁王宇晶张亚男
Owner TONGJI UNIV
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