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Preparation method for floatable nano mesoporous zero-valent iron carbon material

A nano-mesoporous, zero-valent iron technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of high density, hardening, low iron-carbon reactivity, etc., and achieve high reactivity. , the energy consumption is large, and the effect of improving the pollution removal rate

Active Publication Date: 2015-12-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the above-mentioned iron-carbon fillers are macroscopic physical and mechanical combinations, the iron-carbon reactivity is not high, and the density is still relatively large (mostly ≥ 3.0g / cm 3 ), there are also problems such as hardening

Method used

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  • Preparation method for floatable nano mesoporous zero-valent iron carbon material
  • Preparation method for floatable nano mesoporous zero-valent iron carbon material
  • Preparation method for floatable nano mesoporous zero-valent iron carbon material

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Experimental program
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Effect test

Embodiment 1

[0024] The preparation method of the floatable nano mesoporous zero-valent iron-carbon material is to synthesize the floatable nano-mesoporous zero-valent iron-carbon material in one step through multi-component cooperative self-assembly, extraction, heating carbonization and carbothermal reduction, and the specific steps include as follows

[0025] (1) First, add 1.9g of F127 to 40ml of ethanol-water solution with a volume ratio of 1:2 and stir until fully dissolved, then add 1.0g of resorcinol, 1.2g of Fe(NO 3 ) 3 9H 2 O stirred for 1h, finally added 1.62g formaldehyde (37wt%) solution and stirred fully at room temperature for 6h to prepare the phenolic resin / iron complex of resorcinol-formaldehyde, wherein resorcinol, Fe(NO 3 ) 3 9H 2 The molar mass ratio of O, formaldehyde and F127 is 1:0.3:1.5:0.015;

[0026](2) Add 5.40 g of sodium bentonite (360 g / mol) to ethanol-water solution with a volume ratio of 1:2 to form a 10% sodium bentonite ethanol-water suspension by ma...

Embodiment 2

[0031] The preparation method of the floatable nano mesoporous zero-valent iron-carbon material is to synthesize the floatable nano-mesoporous zero-valent iron-carbon material in one step through multi-component cooperative self-assembly, extraction, heating carbonization and carbothermal reduction, and the specific steps include as follows

[0032] (1) First, add 0.87g of P123 to 40ml of ethanol-water solution with a volume ratio of 1:2 and stir until fully dissolved, then add 1.0g of resorcinol, 1.2g of Fe(NO 3 ) 3 9H 2 O stirred for 1h, finally added 1.62g formaldehyde (37wt%) solution and stirred fully at room temperature for 6h to prepare the aldehyde resin / iron complex of resorcinol-formaldehyde, wherein resorcinol, Fe(NO 3 ) 3 9H 2 The molar mass ratio of O, formaldehyde and P123 is 1:0.3:1.5:0.015;

[0033] (2) Add 5.40 g of sodium bentonite to ethanol-water solution with a volume ratio of 1:2 to form a 10% sodium bentonite ethanol-water suspension by mass, and ad...

Embodiment 3

[0038] The preparation method of the floatable nano mesoporous zero-valent iron-carbon material is to synthesize the floatable nano-mesoporous zero-valent iron-carbon material in one step through multi-component cooperative self-assembly, extraction, heating carbonization and carbothermal reduction, and the specific steps include as follows

[0039] (1) First, add 1.9g of F127 to 40ml of ethanol-water solution with a volume ratio of 1:2 and stir until fully dissolved, then add 1.0g of resorcinol, 2.0g of Fe(NO 3 ) 3 9H 2 O stirred for 2h, finally added 1.22g formaldehyde (37wt%) solution and stirred fully at room temperature for 6h to prepare the aldehyde resin / iron complex of resorcinol-formaldehyde, wherein resorcinol, Fe(NO 3 ) 3 9H 2 The molar mass ratio of O, formaldehyde and F127 is 1:0.5:1:0.015;

[0040] (2) Add 5.40 g of sodium bentonite to ethanol-water solution with a volume ratio of 1:2 to form a 10% sodium bentonite ethanol-water suspension by mass, and add r...

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Abstract

The invention relates to a preparation method for a floatable nano mesoporous zero-valent iron carbon material and belongs to the technical field of material preparation. The preparation method comprises: firstly adding P123 or F127 into an ethanol-water solution to be stirred and fully dissolved, then adding resorcinol and Fe(NO3)3.9H2O and stirring the solution for 1-2 hours, and finally adding formaldehyde to prepare a phenolic resin / iron complex of resorcinol-formaldehyde; adding sodium bentonite into the ethanol-water solution to form a sodium bentonite ethanol-water suspension, dropwise adding the sodium bentonite ethanol-water suspension into a mixed liquid of obtained phenolic resin / iron complex of resorcinol-formaldehyde and fully stirring the mixture, then aging the mixture for 36-72 hours at 60 DEG C, dividing the mixed liquid into two layers, separating and removing supernate by liquid dividing, and thermally treating a thick sol in the lower layer for 24 hours at 80 DEG C to obtain powder; extracting the obtained powder by ethanol for 2-3 times; and carrying out thermal reduction on extracted powder to prepare the floatable nano mesoporous zero-valent iron carbon material. According to the preparation method provided by the invention, the reaction activity of the iron carbon material is enhanced, and meanwhile, the problem that filler is hardened and inactivated is solved.

Description

technical field [0001] The invention relates to a method for preparing a buoyant nano mesoporous zero-valent iron-carbon material, which belongs to the technical field of material preparation. Background technique [0002] Among the many treatment methods, electrochemical water treatment technology has attracted extensive attention from the academic community because of its cleanness, environmental protection, less secondary pollutants, and easy recycling of heavy metals and other resources. Among them, the micro-electrolysis method is developed and strengthened from the single zero-valent iron method, based on the technical theory of zero-valent iron and the principle of primary batteries, etc., and has the characteristics of wide application range and simple process. It has remarkable effects in the pretreatment, decolorization and heavy metal wastewater treatment of refractory biodegradable organic wastewater such as dyes, printing and dyeing, medicine, petrochemical and ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/28C02F1/70C02F101/30
Inventor 徐晓军李天国朱丽云刘树丽凤世林刘伟
Owner KUNMING UNIV OF SCI & TECH
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