Nickel nanoparticle-loading iron oxide nanosheet and preparation method thereof

A technology of iron oxide nanoparticles and nanoparticles, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of limited electrocatalytic activity, inability to obtain products, limited contact surface, etc., and achieve high gloss Catalytic performance and gas sensing performance, easy large-scale industrial production, and low production cost

Inactive Publication Date: 2016-07-06
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this product can be used for the detection of uric acid, there are deficiencies in both the product and its preparation method. First, the size of the product is too large, and the rod-shaped shape also limits the specific surface area. limited, leading to limited electrocatalytic activity; secondly, the preparation method cannot obtain products with higher specific surface area, and the process is complicated, time-consuming and energy-consuming

Method used

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  • Nickel nanoparticle-loading iron oxide nanosheet and preparation method thereof
  • Nickel nanoparticle-loading iron oxide nanosheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The concrete steps of preparation are:

[0038] Step 1, first place the iron-nickel alloy target in stirred water; wherein, the mass ratio of iron and nickel in the iron-nickel alloy target is 1:4, and the water is deionized water (or distilled water). Then use a laser with a wavelength of 532nm (or 1064nm), a repetition rate of 1Hz, a pulse width of 15ns, and a power of 40mJ / pulse to irradiate the iron-nickel alloy target for 5min; wherein, the laser spot diameter is 1.5mm, and the emission wavelength is 532nm ( Or 1064nm) laser is a Nd:YAG solid-state laser to obtain a colloidal solution.

[0039] Step 2, carry out the processing of solid-liquid separation, washing and drying to colloidal solution successively; Wherein, solid-liquid separation processing is centrifugal separation, and its rotating speed is 1000r / min, time is 6min, and washing processing is to use deionized water (or ethanol or Acetone) cleans the separated solid matter twice, the separation of the so...

Embodiment 2

[0041] The concrete steps of preparation are:

[0042] Step 1, first place the iron-nickel alloy target in stirred water; wherein, the mass ratio of iron and nickel in the iron-nickel alloy target is 2:3, and the water is deionized water (or distilled water). Then use a laser with a wavelength of 532nm (or 1064nm), a repetition rate of 5Hz, a pulse width of 12.5ns, and a power of 60mJ / pulse to irradiate the iron-nickel alloy target for 4 minutes; the diameter of the laser spot is 1.8mm, and the emission wavelength is 532nm (or 1064nm) laser is a Nd:YAG solid-state laser to obtain a colloidal solution.

[0043] Step 2, carry out the processing of solid-liquid separation, washing and drying to colloidal solution successively; Wherein, solid-liquid separation processing is centrifugal separation, and its rotating speed is 3000r / min, time is 5min, and washing processing is to use deionized water (or ethanol or Acetone) cleans the separated solid matter twice, the separation of th...

Embodiment 3

[0045] The concrete steps of preparation are:

[0046] Step 1, first place the iron-nickel alloy target in stirred water; wherein, the mass ratio of iron and nickel in the iron-nickel alloy target is 1:1, and the water is deionized water (or distilled water). Then use a laser with a wavelength of 532nm (or 1064nm), a repetition rate of 10Hz, a pulse width of 10ns, and a power of 80mJ / pulse to irradiate the iron-nickel alloy target for 3 minutes; wherein, the diameter of the laser spot is 2mm, and the emission wavelength is 532nm (or 1064nm) laser is a Nd:YAG solid-state laser to obtain a colloidal solution.

[0047]Step 2, carry out the processing of solid-liquid separation, washing and drying to colloidal solution successively; Wherein, solid-liquid separation processing is centrifugal separation, and its rotating speed is 6000r / min, time is 4min, and washing processing is to use deionized water (or ethanol or acetone) to wash the separated solid matter for 3 times, the sepa...

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Abstract

The invention discloses a nickel nanoparticle-loading iron oxide nanosheet and a preparation method thereof. The nickel nanoparticle-loading iron oxide nanosheet is characterized in that the sheet length is 50 nm to 50 [mu]m, the sheet width is 20 nm to 10 [mu]m, the sheet thickness is 5 to 50 nm, and nickel nanoparticles of which the particle size is 5 to 50 nm are loaded, wherein the iron oxide nanosheet is composed of trigonal system iron oxide; and the nickel nanoparticles are composed of cubic system nickel. The preparation method comprises the steps of placing an iron-nickel alloy target material into water under stirring; irradiating the iron-nickel alloy target material for at least 1 min with laser of which the wavelength is 532 nm or 1064 nm, the repetition frequency is 1 to 20 Hz, the pulse width is 5 to 15 ns, and the power is 40 to 120 mJ / pulse, so as to obtain a colloidal solution; and then sequentially carrying out solid-liquid separation, washing and drying treatment on the colloidal solution, so as to obtain a target product. The nickel nanoparticle-loading iron oxide nanosheet has relatively high chemical activity, and can be widely and commercially applied to the fields such as photocatalysis, solar cells, pigment, lithium ion batteries and gas sensors.

Description

technical field [0001] The invention relates to an iron oxide nanosheet and a preparation method thereof, in particular to an iron oxide nanosheet loaded with nickel nanoparticles and a preparation method thereof. Background technique [0002] Iron oxide nanomaterials with photodegradable, gas-sensitive and catalytic properties have been widely used in photocatalysis, solar cells, pigments, lithium-ion batteries, and gas sensors. The problem of low activity. Various efforts have been made to solve this problem, such as entitled "Fabrication of Ni–Fe2O3 magnetic nanorods and application to the detection of uric acid", RSCAdvances, 2014, 4: 17146-17155 ("Ni-doped iron oxide nanorods and their application to the detection of uric acid" , "Progress of the Royal Society of Chemistry", Volume 4, 2014, pp. 17146-17155). The product mentioned in this article is nickel-doped iron oxide nanorods with a diameter of 1-5 μm; its preparation method adopts a wet chemical method, and anhy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/00B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00B22F9/08B22F2009/0804B22F1/07
Inventor 王兆明吴兵朱晓光
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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