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Nanoporous copper/cu(oh)2 nanowire array sensor electrode material and preparation method thereof

A nanoporous copper and nanowire array technology, applied in the field of micro-sensing, can solve problems such as easy agglomeration and poor electrical conductivity, and achieve the effects of increasing the contact area, overcoming poor electrical conductivity, and simple preparation methods

Active Publication Date: 2018-07-31
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nanoporous Copper / Cu(OH) 2 Nanowire array composites can not only overcome Cu(OH) 2 The shortcomings of poor electrical conductivity and easy aggregation, and can make full use of the characteristics of its nanostructure as the electrode material of the non-enzymatic glucose sensor, increase the internal specific surface area of ​​the electrode, make the active material evenly and orderly distributed, and improve the sensitivity and accuracy of the sensor

Method used

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  • Nanoporous copper/cu(oh)2 nanowire array sensor electrode material and preparation method thereof
  • Nanoporous copper/cu(oh)2 nanowire array sensor electrode material and preparation method thereof
  • Nanoporous copper/cu(oh)2 nanowire array sensor electrode material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Take Cu x Zr 95-x Al 5 (x=30, x=40, x=50 and x=60) as the nominal composition of the precursor alloy, the pure elements required for the precursor alloy (Cu 99.99 wt%, Zr 99.99 wt%, Al 99.99 wt%), Convert the atomic percentage of the alloy into mass (10g) and weigh it, and then use the method of high-purity argon atmosphere vacuum arc melting to obtain Cu x Zr 95-x Al 5 (x=30, x=40, x=50 and x=60) master alloy button ingots, smelting 3~4 times to ensure uniform composition of master alloy ingots. The master alloy ingots are re-melted by induction heating in a quartz tube, and are continuously and rapidly sprayed onto a water-cooled rotating copper roller under the action of high-purity argon at a pressure of about 0.2 MPa to form Cu x Zr 95-x Al 5 (x=30, x=40, x=50 and x=60) fast-quenched amorphous alloy thin strips, the thickness of the amorphous thin strip is about 20-25 μm, and the width is 5-6 mm.

[0035] Take Cu x Zr 95-x Al 5 (x=30, x=40, x=50 and x=60...

Embodiment 2

[0038] Take Cu 60 Z 35 Al 5 As the nominal composition of the precursor alloy, the pure elements required for the precursor alloy (Cu 99.99wt%, Zr 99.99wt%, Al 99.99wt%) were weighed according to the atomic percentage of the alloy into mass (10g), and then the high The method of pure argon atmosphere vacuum arc smelting, smelting to obtain Cu 40 Z 55 Al 5 Master alloy button ingots are smelted 3 to 4 times to ensure uniform composition of master alloy ingots. The master alloy ingot is re-melted by induction heating in a quartz tube, and is continuously and rapidly sprayed onto a water-cooled rotating copper roller under the action of high-purity argon at a pressure of about 0.2 MPa to form Cu 60 Z 35 Al 5 Rapidly Quenched Amorphous Alloy Ribbon.

[0039] Take Cu 60 Z 35 Al 5 Amorphous alloy thin strips were used as precursors, and 0.005mol / L HF aqueous solution was used as corrosion solution for chemical dealloying. Before treatment, amorphous alloy thin strips were...

Embodiment 3

[0041] Take Cu 60 Z 35 Al 5 As the nominal composition of the precursor alloy, the pure elements required for the precursor alloy (Cu 99.99wt%, Zr 99.99wt%, Al 99.99wt%) were weighed according to the atomic percentage of the alloy into mass (10g), and then the high The method of pure argon atmosphere vacuum arc smelting, smelting to obtain Cu 60 Z 35 Al 5 Master alloy button ingots are smelted 3 to 4 times to ensure uniform composition of master alloy ingots. The master alloy ingot is re-melted by induction heating in a quartz tube, and is continuously and rapidly sprayed onto a water-cooled rotating copper roller under the action of high-purity argon at a pressure of about 0.2 MPa to form Cu 60 Z 35 Al 5 Rapidly Quenched Amorphous Alloy Ribbon.

[0042] Take Cu 60 Z 35 Al 5 Amorphous alloy thin strips were used as precursors, and 0.005mol / L HF aqueous solution was used as corrosion solution for chemical dealloying. Before treatment, amorphous alloy thin strips were...

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Abstract

The invention discloses a nano porous copper / Cu(OH)2 nanowire array sensor electrode material and a preparation method thereof, and belongs to the technical field of micro-sensation. The preparation method of the nano porous copper / Cu(OH)2 nanowire array sensor electrode material mainly comprises the following two steps: by taking Cu-Zr-Al amorphous alloy as a precursor, preparing a flexible nano porous copper film of a double-continuous through hole structure by using a chemical alloy removing method; performing controllable growth on a Cu(OH)2 nanowire array on a nano porous copper film substrate by using an alkali oxidation method. The nano composite electrode material disclosed by the invention is of a structure similar to 'sandwich', Cu(OH)2 nanowires are uniformly and densely distributed on the nano porous copper substrate, have directivity and are uniform in morphology, large in internal specific surface area and very high in electric catalytic activity, the nano composite material can be directly used as an electrode material of a non-enzyme glucose sensor, the linear response range for glucose is 0.2-9 mM, the detection sensitivity is 2.09 mA / cm<2>.mM, the detection limit is 200 nM (S / N=-3.6), and the current response time is less than 1 second.

Description

technical field [0001] The invention belongs to the field of micro-sensing technology, in particular to a nanoporous copper / Cu(OH) which can be used for non-enzymatic glucose sensors 2 Nanowire array sensor composite electrode material and preparation method thereof. Background technique [0002] With the improvement of people's living standards and the increase of the elderly population, diabetes has gradually become a frequently-occurring and common disease worldwide. Diabetes can cause a variety of diseases, including heart disease, kidney failure and blindness, which seriously threaten human health. At present, diabetes is mainly diagnosed by detecting blood glucose concentration, so there is a huge market demand for simple and fast glucose sensors. Among many glucose sensors, the electrochemical glucose sensor has been widely studied due to its advantages of simplicity, rapidity, and high sensitivity. [0003] In recent decades, research on electrochemical glucose se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00G01N27/307G01N27/48
Inventor 刘雄军李睿王辉吴渊吕昭平
Owner UNIV OF SCI & TECH BEIJING
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