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A kind of nano zero-valent alloy composite material and preparation method thereof

A composite material, nano-zero price technology, applied in the field of nano-materials, to achieve good repeatability, good controllability and stability

Active Publication Date: 2021-03-30
北京科大科技园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to precisely adjust and control the content ratio of binary metals, so as to precisely regulate the electron transfer efficiency and improve the reduction activity, has become a challenging problem in this field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh garlic waste, crush and sieve through 40 mesh, throw into water, stir and soak for 24 hours; after skimming off the aqueous solution, collect garlic waste particles, add a mixed solution of magnesium hydroxide and sodium hydroxide to adjust its pH Value is at 13, after keeping stirring for 12 hours, the particles floating on the water surface are collected therein;

[0039] Prepare 10 liters of ferric chloride ion solution of 0.01M concentration, the initial pH is 2.5, drop into 200 grams of garlic waste particles (dry basis measurement) prepared in the previous step, stir and react after 30 minutes, filter the adsorbent, wash 3 times with distilled water back;

[0040] Prepare 10 liters of nickel chloride ion solution with a concentration of 0.01M, the pH is 5.5, put into the above-mentioned garlic dregs adsorbent that has been adsorbed and loaded with iron ions, stir and react for 60 minutes, filter the adsorbent, and wash with distilled water for 3 times;

[0...

Embodiment 2

[0043] Weigh the garlic waste, crush and sieve through 40 mesh, throw it into water, stir and soak for 24 hours; remove the water pressure filter, collect the garlic waste particles, add a mixed solution of calcium hydroxide and sodium hydroxide to adjust Its pH value is 10, after keeping stirring for 24 hours, the particles are collected, washed and filtered to remove most of the adhering water;

[0044] Prepare 10 liters of ferric chloride ion solution of 0.02M concentration, the initial pH is 2.5, drop into 200 grams of garlic waste granules prepared in the previous step (measured on a dry basis), stir and react for 30 minutes, filter the adsorbent, and wash 3 times with distilled water back;

[0045] Prepare 10 liters of copper sulfate solution with a concentration of 0.01M, the initial pH is 6.5, put into the above-mentioned garlic dregs adsorbent that has been adsorbed and loaded with iron ions, stir and react for 60 minutes, filter the adsorbent, and wash with distilled...

Embodiment 3

[0048]Weigh the garlic waste, crush and sieve through 40 mesh, throw it into water, stir and soak for 24 hours; remove the water pressure filter, collect the garlic waste particles, add a mixed solution of potassium hydroxide and sodium carbonate to adjust its When the pH value is 12, after keeping stirring for 19 hours, the particles are collected, washed and filtered to remove most of the adhering water;

[0049] Prepare 10 liters of ferric chloride ion solution of 0.15M concentration, the initial pH is 2.3, drop into 300 grams of garlic waste granules prepared in the previous step (measured on a dry basis), stir and react for 100 minutes, filter the adsorbent, and wash 3 times with distilled water back;

[0050] Prepare 10 liters of copper sulfate solution with a concentration of 0.005M, the initial pH is 5.5, put into the above-mentioned garlic dregs adsorbent that has adsorbed and loaded iron ions, stir and react for 60 minutes, filter the adsorbent, and wash with distill...

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PUM

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Abstract

The invention relates to a nano material, and particularly discloses a nano zero-valent alloy composite material and a preparation method thereof. According to the nano zero-valent alloy composite material and the preparation method thereof, through the difference of the adsorption capacities of biomass materials on iron, nickel and copper salt ions, the number of various metal ions adsorbed and loaded on biomass is selectively and precisely adjusted, through in-situ contact reduction, the above loaded multi-element metal ions can be instantly reduced into alloy nano particles, and the nano zero-valent alloy composite material is obtained. The content ratio of loaded multi-element metal of Ni-Fe, Cu-Fe, Ni-Cu-Fe and the like can be precisely adjusted and controlled by adjusting process parameters such as the metal ion concentration, the adsorption contact time, the adsorbent dosage and the composite metal types, and therefore the nano metal material adjustable in reduction activation is prepared.

Description

technical field [0001] The invention relates to nanometer materials, in particular to a nanometer zero-valent alloy composite material and a preparation method thereof. Background technique [0002] As a safe, mild, and environmentally friendly solid reducing material, nano-zero-valent iron has received keen attention in environmental purification and restoration. In order to improve its reducing activity, various adjustment or enhancement methods have emerged. [0003] In addition to trying to keep zero-valent iron in the nanoscale size during synthesis, packaging, storage, transportation and use, and preventing it from contacting oxidizing atmospheres or substances such as air, there is also a way to use the principle of micro-battery catalysis to improve its reduction activity. solution ideas. Specifically, nickel, palladium, silver, copper and other metals with relatively low activity are deposited on the surface or combined with iron to form a micro-battery to promote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 黄凯
Owner 北京科大科技园有限公司
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