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Preparation method and application of loofah sponge biomorphic supported nitrogen-doped carbon nanotube coated iron nanoparticle Fenton-like catalyst

A nitrogen-doped carbon and nanoparticle technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of slow conversion, easy agglomeration of active components, poor cycle stability, etc. The effect of preventing agglomeration, low cost, and increasing the load capacity

Active Publication Date: 2020-12-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing Fenton catalysts face, such as easy agglomeration of active components, ion leaching, and Fe under neutral conditions. 3+ / Fe 2+ The problem of slow conversion and poor cycle stability, and a preparation method and application of a nitrogen-doped carbon nanotube-coated iron nanoparticle Fenton-like catalyst supported by loofah relics

Method used

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  • Preparation method and application of loofah sponge biomorphic supported nitrogen-doped carbon nanotube coated iron nanoparticle Fenton-like catalyst
  • Preparation method and application of loofah sponge biomorphic supported nitrogen-doped carbon nanotube coated iron nanoparticle Fenton-like catalyst
  • Preparation method and application of loofah sponge biomorphic supported nitrogen-doped carbon nanotube coated iron nanoparticle Fenton-like catalyst

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specific Embodiment approach 1

[0038] Embodiment 1: This embodiment is a method for preparing a nitrogen-doped carbon nanotube-coated iron nanoparticle-like Fenton catalyst supported by loofah relics, which is completed in the following steps:

[0039] 1. Remove the seeds from the mature loofah, wash it, dry it, and cut it into pieces to obtain dry loofah with a particle size of 8 mm to 10 mm;

[0040] Two, alkaline treatment:

[0041] ①. Mix the dry loofah with a particle size of 8 mm to 10 mm and the KOH solution, and then stir to obtain the reaction solution Ⅰ;

[0042] ②. Transfer the reaction solution I to a polytetrafluoroethylene-lined reaction kettle, then perform alkalization treatment, and then cool to room temperature with the furnace to obtain the reaction product I;

[0043] ③, use deionized water to wash the reaction product I to neutrality, then put it into an oven to dry, and obtain the loofah after KOH treatment;

[0044] 3. Immerse the loofah after KOH treatment into FeCl 3 ·6H 2 O sol...

specific Embodiment approach 2

[0058] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the cleaning described in step 1 is to use deionized water to clean 3 to 5 times first, and then use absolute ethanol to clean 3 to 5 times; The drying temperature described above is 60°C to 80°C, and the drying time is 10h to 12h. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0059] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the particle diameter described in step 2. is that the quality of the dry loofah of 8mm~10mm and the volume ratio of KOH solution are (8g ~10g): 100mL; the concentration of the KOH solution described in step two 1. is 1mol / L; the stirring speed described in step two 1. is 800r / min~1000r / min, and the stirring time is 1h~3h. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of a loofah sponge biomorphic supported nitrogen-doped carbon nanotube coated iron nanoparticle Fenton-like catalyst, relates to a preparation method and application of a Fenton-like catalyst, and aims to solve the problems of easy agglomeration of active components, ion leaching, slow Fe < 3 + > / Fe < 2 + > conversion under a neutral condition and poor cycling stability of the existing Fenton-like catalyst. The method comprises the following steps: 1, preparing dried loofah sponge with the particle size of 8-10mm; 2, alkalization treatment; 3, precipitating Fe < 3 + > on the surface of the loofah sponge; 4, doping a nitrogen source; 5, carrying out pyrolysis; 6, cleaning and drying. The loofah sponge biomorphic supported nitrogen-doped carbon nanotube coated iron nanoparticle Fenton-like catalyst is used for degrading tetracycline hydrochloride in sewage. The method is suitable for degrading antibiotics.

Description

technical field [0001] The invention relates to a preparation method and application of a Fenton-like catalyst. Background technique [0002] With the widespread use of antibiotics, drug residues in water not only cause serious environmental problems, but also have potential impacts on human health. In recent years, Fenton-like oxidation can deeply degrade mineralized antibiotics by generating strong oxidizing OH. This technology mainly focuses on the design and development of heterogeneous Fenton-like catalysts, especially iron-based catalysts. However, solid-phase catalysts containing iron species suffer from Fe ion leaching and poor stability. Among them, other materials are used as carriers, such as carbon nanotubes, graphene, activated carbon, biocarbon and other carbon materials, which have high compatibility due to their diverse structures and good electrical conductivity. [0003] Carbon nanotubes have sp 2 The characteristics of hybrid carbon configuration, regul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C02F1/72C02F101/30C02F101/38C02F103/34
CPCB01J27/24C02F1/725C02F1/722C02F2305/026C02F2101/38C02F2103/343C02F2101/30B01J35/396B01J35/61
Inventor 姚忠平张笑李东琦周扬姜兆华
Owner HARBIN INST OF TECH
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