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An electrocatalytic oxidation anode material and treatment method for preferential removal of nonylphenol

An electrocatalytic oxidation and anode material technology, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Excellent electrocatalytic performance, overcoming easy oxidation, and improving electrocatalytic activity

Active Publication Date: 2021-06-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has no specific recognition ability and cannot achieve the purpose of preferentially removing pollutants in complex systems

Method used

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  • An electrocatalytic oxidation anode material and treatment method for preferential removal of nonylphenol
  • An electrocatalytic oxidation anode material and treatment method for preferential removal of nonylphenol
  • An electrocatalytic oxidation anode material and treatment method for preferential removal of nonylphenol

Examples

Experimental program
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Effect test

Embodiment 1

[0033] An electrocatalytic oxidation anode material that preferentially removes nonylphenol. The electrocatalytic oxidation anode material is an imprinted high-index crystal surface tin dioxide electrode, which is prepared by the following method: first prepare 4-(9-aminononyl)- The phenol template molecule is modified on the surface of silica through condensation reaction to form the inner core, and then the high-index crystal facet tin dioxide crystal is grown on the inner core surface for many times to obtain the molecular imprinted material precursor, which is removed from the inner core and fixed on the On the substrate electrode, the MI-SnO 2,HIF electrode.

[0034] MI-SnO 2,HIF The electrode is specifically prepared by the following method:

[0035] (a) In an inert gas atmosphere, add palladium (II), triphenylphosphine and triethanolamine to the reactor to obtain a mixed solution, add 4-bromophenol and 9-bromo-1-nonene to the mixed solution , after the reaction, a re...

Embodiment 2

[0040] A treatment method for an electrocatalytic oxidation anode material that preferentially removes nonylphenol, the treatment method is specifically: the NP solution to be degraded (with a concentration of 4.5 μmol L -1 NP solution containing 0.1mol L -1 Na 2 SO 4 solution) is placed in a circular degradation cell with a single-layer quartz surface light transmission, and the MI-SnO prepared in Example 1 is taken 2，HIF The electrode is used as a working anode (the effective area of ​​the electrode is 4.5cm 2 ), the platinum sheet is the counter electrode, and the saturated calomel electrode is the reference electrode to form a three-electrode system. A bias voltage of 1.2V is applied to the three-electrode system, and the degradation solution volume is 100mL. The temperature of the reaction system was maintained at 25° C. using a super constant temperature water bath. Take the concentration at this time as the initial concentration C of NP 0 . The sampling interval w...

Embodiment 3

[0042] A treatment method for an electrocatalytic oxidation anode material that preferentially removes nonylphenol, the treatment method is specifically: the NP solution to be degraded (concentration is 8 μmol L -1 NP solution containing 0.8mol L -1 Na 2 SO 4 solution) is placed in a circular degradation cell with a single-layer quartz surface light transmission, and the MI-SnO prepared in Example 1 is taken 2，HIF The electrode is used as a working anode (the effective area of ​​the electrode is 6cm 2 ), stainless steel is the counter electrode, forming a two-electrode system, the tank voltage of the two-electrode system is 5V, and the degradation solution volume is 100mL. The temperature of the reaction system was maintained at 25° C. using a super constant temperature water bath. Take the concentration at this time as the initial concentration C of NP 0 . The sampling interval was 30min, and the samples were filtered through a 0.22μm aqueous needle filter membrane. Th...

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Abstract

The invention relates to an electrocatalytic oxidation anode material and a treatment method for preferentially removing nonylphenol. The electrocatalytic oxidation anode material is prepared by the following method: first preparing 4-(9-aminononyl)-phenol template molecule, and then It is modified on the surface of silicon dioxide by condensation reaction to form a core, and then a high-index crystal facet tin dioxide crystal is grown on the surface of the core to obtain a molecular imprinted material precursor. Finally, the core is removed and fixed on the substrate electrode to obtain an imprinted high Exponential facet tin dioxide electrode. The imprinted high-index crystal surface tin dioxide electrode is used as a working anode for the preferential electrocatalytic oxidation and removal of nonylphenol in complex pollution systems. Compared with the prior art, the electrode of the present invention has excellent electrocatalytic activity and strong specific recognition ability, and can realize the preferential electrocatalytic oxidation and removal of nonylphenol in the complex system, and the lowest nonylphenol in the effluent after treatment Concentration up to 10μg L ‑1 the following.

Description

technical field [0001] The invention belongs to the field of water pollution control engineering, and in particular relates to an electrocatalytic oxidation anode material and a treatment method for preferentially removing nonylphenol. Background technique [0002] Nonylphenol (denoted as NP), is an alkylphenol pollutant. It is highly toxic and can simulate estrogen, affecting the normal reproduction and development of organisms, and is listed as an endocrine disruptor. Moreover, NP molecules contain long alkyl chains, which further increase the fat solubility, oxidation resistance and toxicity of NP molecules. With the continuous accumulation of NP in water, environmental problems are becoming more and more serious. However, in the current municipal sewage treatment process, NP is difficult to be mineralized by microorganisms as the first carbon source due to its low concentration and competition with high-concentration and low-toxicity organic matter. Therefore, it is par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/467C02F1/461C02F101/34
CPCC02F1/46109C02F1/4672C02F2001/46142C02F2101/345
Inventor 赵国华牛宝玲蔡郡倬
Owner TONGJI UNIV
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