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Method for preparing functional iron oxide nanoparticles by taking machine head ash as raw material

A technology of iron oxide and nano particles, which is applied in the field of nano materials, can solve the problems of insufficient development of high value-added products, and achieve the effect of high functional application and added value, good crystallization and uniform particles

Pending Publication Date: 2021-08-13
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the follow-up high value-added product development is insufficient

Method used

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  • Method for preparing functional iron oxide nanoparticles by taking machine head ash as raw material
  • Method for preparing functional iron oxide nanoparticles by taking machine head ash as raw material
  • Method for preparing functional iron oxide nanoparticles by taking machine head ash as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Weigh 5g of machine head ash, add ultrapure water to wash, the solid-to-liquid ratio of machine head ash and ultrapure water is 1:8, stir thoroughly and ultrasonically for 30min, then collect the water-washed slag precipitate by centrifugation at 4000rpm, and evaporate the water-washed supernatant to dryness Collect the powder. Add 4.5 mol / L hydrochloric acid to the washed slag precipitate according to the solid-to-liquid ratio of 1:5, stir at 90°C for 90 min, and then collect the supernatant by centrifugation at 4000 rpm, which is designated as solution A. Use NaOH solution to adjust the pH of solution A to 1.3, add ethylene glycol to make the iron ion concentration in solution A 0.0058mol / L, take a certain amount of anhydrous sodium acetate and dissolve it in ethylene glycol to make the concentration 0.0294mol / L According to the volume ratio of 1:1, mix solution A and sodium acetate ethylene glycol solution, stir at room temperature for 30 minutes until uniform, and f...

Embodiment 2

[0068] Weigh 10g of machine head ash, add ultrapure water to wash, the solid-to-liquid ratio of machine head ash and ultrapure water is 1:8, stir thoroughly and ultrasonically for 30min, then collect the water-washed slag precipitate by centrifugation at 4000rpm, and evaporate the water-washed supernatant to dry up powder. According to the solid-liquid ratio of 1:5, add 3 mol / L hydrochloric acid to the washed slag precipitate, stir at 85°C for 90 minutes, and then collect the supernatant by centrifugation at 4000rpm, and record it as solution A. Use NaOH solution to adjust the pH of solution A to 1.3, add ethylene glycol to make the iron ion concentration in solution A 0.0143mol / L, take a certain amount of anhydrous sodium acetate and dissolve it in ethylene glycol to make the concentration 0.0714mol / L Mix solution A and sodium acetate ethylene glycol solution at a volume ratio of 1:2, and stir at room temperature for 30 minutes until uniform to form a mixed solution B. The m...

Embodiment 3

[0072] Weigh 5g of machine head ash, add ultrapure water to wash, the solid-to-liquid ratio of machine head ash to ultrapure water is 1:6, stir thoroughly and ultrasonically for 30min, and then collect the water-washed slag precipitate by centrifugation at 4000rpm. Add 4.5 mol / L sulfuric acid to the water-washed slag precipitate according to the solid-to-liquid ratio of 1:10, stir at 40°C for 120 min, and then collect the supernatant by centrifugation at 4000 rpm, which is designated as solution A. Use NaOH solution to adjust the pH of solution A to 1.8, add ethylene glycol to make the iron ion concentration in solution A 0.0083mol / L, take a certain amount of anhydrous sodium acetate and dissolve it in ethylene glycol to make the concentration 0.0416mol / L Mix solution A and sodium acetate ethylene glycol solution at a volume ratio of 1:3, and stir at room temperature for 30 minutes until uniform to form a mixed solution B. The mixed solution B was transferred into the reactor ...

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Abstract

The invention discloses a method for preparing functional ferroferric oxide nano-particles, ferric oxide nano-particles and ferroferric oxide doped ferric oxide nano-particles by taking sintering machine head fly ash (head ash) as a raw material and adjusting the concentration of Fe < 3 + > in an ethylene glycol solvent. The method comprises the following steps: S1, taking the machine head ash, adding ultrapure water for washing, performing ultrasonic treatment, centrifuging, then collecting washing slag, soaking the washing slag in inorganic acid with a certain concentration at a certain temperature for a period of time, performing centrifugal separation, and collecting supernatant containing Fe < 3 + >; and S2, adjusting the pH value of the Fe < 3 + >-containing supernatant by using sodium hydroxide, adding anhydrous sodium acetate and ethylene glycol, stirring, transferring into a reaction kettle, sealing, placing the reaction kettle in an air dry oven, and heating for reaction to obtain the iron oxide nanoparticles. The diameter of the iron oxide nanoparticles obtained by the method is 50-100nm, the iron oxide nanoparticles have excellent degradation performance and gas-sensitive performance, and a new thought is provided for further development of efficient and comprehensive utilization of the machine head ash.

Description

technical field [0001] The invention belongs to the field of nanomaterials, and relates to a method for preparing functional iron oxide nanoparticles using machine head ash as a raw material, in particular to preparing iron ferric oxide nanoparticles, ferric oxide nanoparticles and A method for doping ferric oxide nanoparticles with ferric oxide. Background technique [0002] my country is currently in the middle and late stage of industrialization development, and the demand for steel is huge. Therefore, the iron and steel industry has become an important pillar industry for the rapid development of my country's industrialization. But it is also accompanied by high energy consumption and high pollution. The sintering head dedusting dust produced during the sintering process is one of the main sources of pollution in the iron and steel industry. It is the dust collected by the sintering head flue gas dust removal device during the iron ore sintering process. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01G49/06B82Y30/00
CPCC01G49/08C01G49/06B82Y30/00C01P2002/72C01P2004/03C01P2002/84C01P2004/62C01P2004/64
Inventor 付海涛尹若铭杨晓红安希忠赵宏明梁晋楠张浩邹清川
Owner NORTHEASTERN UNIV
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